Use substitution to solve the system.
3x+5y = 2
y = 2x-10

Answers

Answer 1

Answer:

x = 4, y = -2

Step-by-step explanation:

Answer 2

Answer:

x = 4

y = -2

Step-by-step explanation:

[tex]3x + 5y = 2[/tex]

[tex]y = 2x - 10[/tex]

[tex]3x + 5(2x - 10) = 2[/tex]

[tex]3x + 10x - 50 = 2[/tex]

[tex]13x = 52[/tex]

[tex]x = 4[/tex]

Now,

[tex]y = 2(4) - 10 [/tex]

[tex]y = 8 - 10[/tex]

[tex]y = - 2[/tex]


Related Questions

Which are characteristics of the graph of the function f(x) = (x + 1)2 + 2? Check all that apply

Answers

Answer:

A. the domain is all real numbers. and

B.the y-intercept is 3

Rewrite the inequality with zero on one side and one rational expression on teh other. 3/x+2+4>3 what is the first step

Answers

Answer:

Add –3 to both sides

Step-by-step explanation:

edge 2021

I NEED HELP ASAP!!! I'LL GIVE BRAINLIEST TO CORRECT ANSWER!!!

A.) SU = 22 cm
B.) SU > 22 cm
C.) There is not enough information to determine the relative length.
D.) SU < 22 cm

Answers

D. since angle pqr is 52 and angle stu is 50. you know that su has to be shorter than pr

hope this helps!

Answer:

SU < 22 cm

Step-by-step explanation:

Use the Distributive Property to expand this expression.

z(–6.4 – 3.5x)

Answers

Answer:

[tex]z\left(-6.4\:-3.5x\right)=-6.4z-3.5zx[/tex]

Hence, Option 'C' is true.

Step-by-step explanation:

Given the expression

[tex]z\left(-6.4\:-3.5x\right)[/tex]

Apply distributive law:   [tex]a\left(b-c\right)=ab-ac[/tex]

Here:  [tex]a=z,\:b=-6.4,\:c=3.5x[/tex]

so the expression becomes

[tex]z\left(-6.4\:-3.5x\right)=z\left(-6.4\right)-z\cdot \:\:3.5x[/tex]

                         [tex]=-6.4z-3.5zx[/tex]                 ∵  [tex]+\left(-a\right)=-a[/tex]

Therefore,

[tex]z\left(-6.4\:-3.5x\right)=-6.4z-3.5zx[/tex]

Hence, option 'C' is true.

Write an equation of the line that passes through (-1, – 4) and is perpendicular to the line y = (3/4)x -2

Answers

Step-by-step explanation:

The equation of the line is given above

John and his friend ordered lunch at a local sandwich shop. They each ordered a soft drink that costs $1.65. John orders a whole ham sandwich and his friend ordered half of a ham sandwich. Their total bill is $12.54. What equation can you use to find the cost c of a sandwich, and what is the value of c

Answers

Answer:

a. $12.54 = $ 1.65 + c/2 + c b. $ 7.26

Step-by-step explanation:

a. What equation can you use to find the cost c of a sandwich

Let c be the cost of a whole ham sandwich. Now, the total bill = cost of drinks + cost of half a ham sandwich  + cost of a whole ham sandwich.

total bill = $ 12.54, cost of drinks = $ 1.65, cost of half a ham sandwich = c/2 and cost of a whole ham sandwich = c. So,

$12.54 = $ 1.65 + c/2 + c

b. What is the value of c

We then solve for c in the equation $12.54 = $ 1.65 + c/2 + c

collecting like terms, we have

$12.54 - $ 1.65 = c/2 + c

$ 10.89 = 3c/2

multiplying through by 2, we have

$ 10.89 × 2 = 3c

$ 21.78 = 3c

dividing through by 3, we have

c = $ 21.78/3

= $ 7.26

what is the measure of a given that b measures 100????

Answers

Step-by-step explanation:

Angle at Center = 2 * Angle at Circumference

Therefore B = 2A.

When B = 100°, A = 100°/2 = 50° (B),

When A = 48°, B = 2(48°) = 96°. (C)


HELP NOW URGENT PLEASE!!
Last month you spent $30 on clothing. This month you spent 140% of what you spent last month. How much did you spend this month?

Answers

Answer:

42

Step-by-step explanation:

Answer: you spent 63

Step-by-step explanation:

Select the correct answer.
The slope of the function on the left is multiplied by p, and is added to the yIntercept to arrive at the function on the right. Which of the
following are the values for p and q?
A. p = -2 and q = -2
В. p=-2 and q = -4
C. P = 2 and q = -3
D. P = -2 and q = -3

Answers

Answer:

p = -2

q = -3

Step-by-step explanation:

Let us get the equation of the two graphs

General equation form is;

y = mx + b

m is slope and b is the y-intercept

For the first one;

y intercept is 1

So the equation is;

y = mx + 1

The x-intercept is -2

the value of y at the x-intercept is 0

0 = -2m + 1

1 = 2m

m = 1/2

so;

1/2 * p

p/2

q added to y-intercept;

q + 1

Let us get the equation of the second plot

y-intercept is -2

Equation is;

y = mx - 2

We can get slope using x-intercept

x-intercept is -2

0 = -2m - 2

2m = -2

m = -1

So;

p/2 = -1

p = 2 * -1 = -2

For the value of q;

q + 1 = -2

q = -2-1 = -3

Need help please asap

Answers

Answer:

A

Step-by-step explanation:

A because 21 is a greater number than 9 and therefore should be in the denominator. That leaves you with 9 which is a smaller number and should go on the numerator. Hope this helped you!

Which of the following is an improper integral?
A) the integral from 0 to 3 of the quotient of the quantity x plus 1 and the quantity 3 times x minus 2 dx
B) the integral from 1 to 3 of the quotient of the quantity x plus 1 and the quantity 3 times x minus 2 dx
C) the integral from negative 1 to 0 of the quotient of the quantity x plus 1 and the quantity 3 times x minus 2 dx
D) None of these

Answers

Answer:

A)  [tex]\displaystyle \int\limits^3_0 {\frac{x + 1}{3x - 2}} \, dx[/tex]

General Formulas and Concepts:

Calculus

Discontinuities

Removable (Hole) Jump Infinite (Asymptote)

Integration

IntegralsDefinite IntegralsIntegration Constant CImproper Integrals

Step-by-step explanation:

Let's define our answer choices:

A)  [tex]\displaystyle \int\limits^3_0 {\frac{x + 1}{3x - 2}} \, dx[/tex]

B)  [tex]\displaystyle \int\limits^3_1 {\frac{x + 1}{3x - 2}} \, dx[/tex]

C)  [tex]\displaystyle \int\limits^0_{-1} {\frac{x + 1}{3x - 2}} \, dx[/tex]

D) None of these

We can see that we would have a infinite discontinuity if x = 2/3, as it would make the denominator 0 and we cannot divide by 0. Therefore, any interval that includes the value 2/3 would have to be rewritten and evaluated as an improper integral.

Of all the answer choices, we can see that A's bounds of integration (interval) includes x = 2/3.

∴ our answer is A.

Topic: AP Calculus AB/BC (Calculus I/I + II)

Unit:  Integration

Book: College Calculus 10e

1 2 ÷ 3 2 1 ​ ÷3 need help lol

Answers

Answer:

0.012461059

Step-by-step explanation:

Answer:

g00gle says 0.01246105919

Step-by-step explanation:

Set up a proportion to solve for x.
A 18
B) 9
C) 4.2
D) 3
HELPP

Answers

It’s C. (4.2)

Explanation:
6x3=18

Then find the square root of 18

=4.2

2.) Mackenzie uses 1/5 of a cup of sugar for 1/3 of a gallon of lemonade.
How many cups of sugar would she need for a whole gallon of lemonade?*

Answers

Answer:

3/5 cups of sugar

Step-by-step explanation:

If 1/5 of a cup of sugar is used for 1/3 of a gallon of lemonade, 1/5 of a cup will be used in each of the overall three thirds of a gallon.

Answer:

3/5 cup of sugar good luck

x
X




You put $1200 into an investment yielding 11%
annual interest; you left the money in for two
years. How much interest do you get at the end
of those two years?

Answers

Answer:

$1864

Step-by-step explanation:

11% of 1200=132

132×2(years)=264

1200+264=1864

The ordered pair (3,9) is a solution to the following system of equations.
y = x + 6
y = 2x + 3

A) True
B) False

Answers

The answer to the question is: true

How can you diffrentiate "less" and "less than"? Can these terms be used in mathematics? How?​

Answers

Less or less than means to subtract in math
mathematics. Example would be Bob and 100 apples but Emily has 15 apples
less than Bob, how many apples in total?
Which weighs less 1 oz of sugar or 1 lbs of sugar.
less" simply means "-" minus. subtract. for example 6 less 3 is 6-3 which is equal to 3

where as

less than means this number is of lower value than that of the other number. for example 3 is less than 6

Seems easy but this has my brain hurting.

Answers

Answer:

E and D

Step-by-step explanation:

Just make a mental line which these letters connect to each other.


Copy the expressions which are polynomials. Give reasons why the remaining are
not polynomials.
a)3x-2
b)p^2+1/p
c3y^2-2y/3+1

Answers

Answer: a and c are polynomials, b is not.

Step-by-step explanation:

A polynomial p(x) is written as:

p(x) = aₙ*xⁿ + ... + a₂*x² + a₁*x¹ + a₀*x⁰

where x is the variable, and the numbers aₙ, aₙ₋₁, ..., a₁, a₀ are the coefficients of the polynomial, such that aₙ is the leading coefficient, and the value of n (always a natural number) is the degree of the polynomial.

Notice that the powers need to be always natural numbers.

Now, let's analyze the options:

a) 3*x - 2

We can rewrite this as:

3*x¹ - 2*x⁰

Then this is a polynomial.

b) p² + 1/p    (in this case the variable is p)

the second term can be written as:

1/p = p⁻¹

Then we have a term with a negative power of p, this means that this is not a polynomial.

c) 3*y² - 2*y/3 + 1

Same as in the first case, we can rewrite this as:

3*y² - (2/3)*y¹ + 1*y⁰

This is a polynomial.

Stacy spent £20 on ingredients for bread.
She made 18 loaves and sold them for £1.40 each.
Calculate her percentage profit.

Answers

Answer:

Stacy made £25.2 from the 18 loaves of bread. So She made £5.20 as a profit.

Step-by-step explanation:

18 loaves of bread × £1.4 = £25.2 Round it up = £25

£25.20 - £20 = £5.20 Round it up = £5

Stacy Made about £5 as profit.

7
2
2 2 3
8
0
58
9
3 7
10
0

Answers

Answer:

Wut...?

Step-by-step explanation:



Fill the empty slots by dragging tiles from the left to show the Solve the two-step equation and identify the steps.
next step for solving the equation.
Solve the two-step equation and identify the steps. 2= -7/4+1/4x
1.______ 7/4 to both sides.
2.______ by 4
The solution is X =_____

Answers

Answer: 1. Add 2. Multiple both sides 3. 15

Step-by-step explanation: hope this helps

Answer: 2 = − 7

4

+ 1

4

x

1.

✔ Add

Start Fraction 7 over 4 End Fraction to both sides.

2.

✔ Multiply both sides

by 4.

The solution is x =

✔ 15

.

Step-by-step explanation: i just did it on ed

HELP!!!!! 50 POINTS!!
Graph the image of the figure after a dilation with a scale factor of 3 centered at (2, −7)
Use the Polygon tool to graph the quadrilateral by connecting all its vertices.
(Picture in file below)

Answers

The picture isn’t popping up

Erica is a police officer. She earns $24 an hour. Sometimes she works extra shifts and earns time and a half for each hour she works over 40. Erica is paid biweekly. Last week she worked 44 hours and this week she worked 52 hours. Calculate Erica's Gross Pay

Answers

Answer:

Gross pay = $2496

Step-by-step explanation:

Erica earns $24 an hour. She works extra shifts and earns time and a half for each hour.

Her extra earning starts over 40 hours.

Therefore, her extra earning above 40 hours = 1.5 × 24

                                                                           = $36 per hour

She worked for 44 hours in last week, her total earnings for last week

= (40 × $24) + (4 × $36)

= 960 + 144

= $1104

She worked for 52 hours this week, her total earnings for this week

= (40 × $24) + (12 × $36)

= 960 + 432

= $1392

Since, Erica was paid biweekly,

Her gross income = $1104 + $1392

                              = $2496

Can someone please help? I need to get this doe so I can do something important

Answers

Answer:

9. 4/1 or 4. 10. 0

Step-by-step explanation:

9.

Slope- y2-y1/x2-x1

11-7/4-3= 4/1 or 4

10.

Slope-y2-y1/x2-x1

7-7/5-0= 0/5

When 0 is the numerator of the slope, then the slope is 0.

daily wages of a factory workers are recorded as
C.I
12-126 127-132. 133-138. 139-144
Freq.
5. . 27. 20. 18

the lower limit of model class is. [. ]
a) 127
b 126
c) 126. 5
d) 133​

Answers

Answer:

I think the answer is c I hope it helps I not a 100 percent

Answer:

*the hero (me) enters into the battlefield*

Step-by-step explanation:

i am here to fight sharon she is given time for surrender or be get defeated by me !!!!

uk u can never winnnn with me

solve for x and find m∠FGH

Answers

Answer:

x° = 11°

Z FGI = 60°

Step-by-step explanation:

If GH bisects Z FGI

then Z FGH = Z HGI

or, (3x - 3)° = (4x - 14)°

or, 3x° - 4x° = - 14° + 3°

or, = 11°

Z FGI = 33° - 3° + 44° - 14°

= 60°

Dana's car averages 28 miles per gallon of gas, and it currently contains 1 gallon of gas. If
Dana adds $10.00 worth of gas, sold for $2.50 per gallon, how many miles can he expect to
drive before running out of gas?

Answers

Answer: Is 140
Question: Dana's car averages 28 miles per gallon of gas, and it currently contains 1 gallon of gas. If Dana adds $10.00 worth of gas, sold for $2.50 per gallon, how many miles can he expect to drive before running out of gas?

Answer:

140 miles

Step-by-step explanation:

10/2.5=44 gallons + 1 gallon= 5 gallons28 miles per gallon28*5 or 28+28+28+28+28=140

If Alberto's bill is $45.47 with tax. And he wants to leave a 20% tip. How much tip will he leave? * round to the nearest dollar.

Answers

Answer:

i tried but all i got was like 80 percent

Step-by-step explanation:

Answer: About 9 bucks

Explanation:

45.57 x 0.20 = 9.094

You have to make the percent into a decimal by moving it to the front by two places

So 30% would be 0.30

5% would be 0.05 and so on

solve the equation 7( 4+p) = 28

P=0

P=8

P=7​

Answers

Answer:

Step-by-step explanation:

1: 7(4+0)=28

7(4)=28

28=28

this is correct

Answer:

p=0

1) use distributive property

7*4+7p=28

28+7p=28... solve for p

7p=28-28

7p=0... divide both sides by 7 to find p

p=0

Other Questions
what incentives influence people in their decisions about exercise and diet? Define opening statement who are the "Anglo - Saxons "? Nick and eddie are both thinking of a number. Eddies number is 3/7 of nicks number. There is a difference of 52 between their two numbers. What are the two numbers I really need help this is due today 1. What was Jefferson's view ofthe relationship between edu-cation and democracy? Help plz. Correct answer will be brainiest!!! Large segments of geologic time encompass shorter segments. What is the correct order of the five geologic time categories beginning with the largest time segment?A. era, eon, period, epoch ageB. age, epoch, period, era, eonC. eon, era, period, epoch, age Which of the following best describes a difference between a mutualistic relationship and a parasitic relationship? A. Parasitism harms both organisms, while mutualism harms only one organism. B. Parasitism benefits only one organism, while mutualism benefits both organisms. C. Parasitism involves only two organisms, while mutualism involves many organisms. D. Parasitism continues for many generations, while mutualism is limited to one generation. Fill in the blank:-Handpicking is used to separate larger size impurities from _________.Define:-1. Threshing 2. Winnowing 3. Sieving Write in your words Daro buys applesauce cups for a family reunion. He needs 23 cups, and he buys them in packs of 6. How many packs does Dario need? Which word refers to something that is native to a particular place? Submit your written technical directions that provide step-by-step instructions for either a recipe, a complex process, or the bylaws for a club or organization. Be sure to include a supplies/ingredients list (as needed), a title, headings, bullet points, numbering, graphics, and special fonts.please try not to copyright Compare the far side and the visible side of the moon What impact does globalization have on the spread of languages?it makes some local languages extinct.it results in new vocabulary words being added to the english language.it reduces differences in regional dialects.new creoles of english and local languages will form1 only 1 and 33 and 4 1,2 and 42,3 and 4 Soil with high amounts of_____ is acidic.MagnesiumPotassium Hydrogen IonsCalcium please help: spanish 1 giving brainliestsfill in the correct form for each verb in present tense. 1: yo ____ con mis amigos. (almorzar)i eat lunch with friends. 2: ella ____ nadar cuando hace calor. (querer)she wants to swim when the weathers hot. 3: las plantas _____ cuando no hace sol. (morir)the plants die when its sunny4: yo siempre ____ al futbol americano con mis amigos. (jugar)i always play football with my friends. 5: marta y yo ____ a los deportes (jugar) marta and i play sports. 6:?por que ____ tu las respuestas? (repetir)why do u repeat the questions ?7: a veces, mi mejor amiga _____ sus lentes. (perder)sometimes, my best friend loses her glasses 8: eva y adan ____ espanol pero no lo hablan bien. (entender)eva and adan understand spanish but they dont speak well. 9: yo____ con amigos los viernes (salir) irregular yoi go out with my friends on fridays10: nosotros nunca _____ a nuestros padres. (mentir) we never lie to our parents. 11: de vez en cuando yo _____ palabras malas. (decir)once in a while i say bad words. 12: _____vosotros pizza con pepperoni aqui. (servir)do yall (spain) serve pepperoni pizza here?13: yo quiero ______ pero no puedo. (dormir)i want to sleep but i cant. 14: ?cuanto_____ los trajes de bano. (costar)how much do the baithing suits cost?15: de donde ____ tu? (ser)where are u from. 16: nosotros ______ al parque. (ir)we go to the park17: hola! como _____ ud?hello how are u i really need help with this im trying to get my grade up What is the perimeter of a square with a dimensions of (3x^2 +1)Please help I need it ASAP. SARS-CoV-2 is a respiratory virus. What makes a respiratory virus more difficult to contain than a pathogen that is spread through contaminated food, for example?