Mathematics High School

please does anyone know the correct answer choice!?!?

Answers

Answer 1

Answer:

I believe the answer would be b

Step-by-step explanation:

Solve equation 1 for the variable y

y = -5x

Plug this in for variable y in equation

4•(-5x) + 12x = 16

- 8x = 16

Solve equation 2 for the variable x

8x = - 16

x = - 2

so far we know this

y = -5x

x = -2

Use the x value to solve for y

y = -5(-2) = 10

which would give us the answer B

Related Questions

Find the circumference of the given circle use 3.14 pie and 7 in diameter

Answers

Answer:

43.98

Step-by-step explanation:

2piR

BTW the 7 is the radius not the diameter

1. A Baltimore passenger train traveled 80 miles in 1.5 hours. What was the average speed of the train? 50mph

Answers

Answer:

53.33 miles per hour

An ammonia and water mixture fills a five-gallon container. Eighty percent of the mixture is ammonia, but some of the mixture will be drained and replaced with pure water. If a five-gallon mixture of fifty percent ammonia is desired, how many quarts of the mixture need to be drained before the water is added, given that 4 quarts equals a gallon

Answers

Answer:

The volume of the 80% ammonia that is to be drained before water is added is 7.5 quartz

Step-by-step explanation:

The volume of the ammonia and water mixture = 5 gallons

The percentage of ammonia in the mixture = 80%

The volume of ammonia desired = 5 gallons

The percentage concentration of ammonia desired = 50%

The diluting solution = Pure water

The measure of 4 quarts = 1 gallon

Therefore, we have, by equivalence solutions;

80% × x gallon = 50% × 5 gallons

x gallon = 50% × 5 gallons/(80%) = 3.125 gallons

x = 3.125 gallons

The volume of the 80% ammonia that is to be drained = 5 gallons - 3.125 gallons = 1.875 gallons

4 quarts = 1 gallon

1 gallon = 4 quarts

∴ 1.875 gallons = 4 × 1.875 quartz = 7.5 quartz

The volume of the 80% ammonia that is to be drained before water is added = 7.5 quartz

Answer:

7.5

Step-by-step explanation:

Which expression is equivalent to (8x – 20) + (-4x + 12)?

A. 12x + 8

B. 4x – 8

C. – 4x – 8

D. – 4x

Answers

Answer:

B. 4x-8

Step-by-step explanation:

What is the solution to this equation? 7x + 3 = 10x - 5.4 Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.

Answers

Answer:

Step-by-step explanation:

7x + 3 = 10x - 5.4

Bringing like terms on one side

3 + 5.4 = 10x - 7x

8.4 = 3x

8.4/3 = x

2.8 = x

I need help it khan 4q+3+2q-1

Answers

Answer: 6q + 2

Step-by-step explanation:

Please help 20 points and brainliest
Which of the following groups of numbers is in order from least to greatest?

0.54, 7/10, 40%
3/4, 0.8, 94%
67%,1/2 , 0.8
7/10, 0.54, 67%

Answers

Answer: the last second one: 3/4 0.8 94%

Step-by-step explanation:

because 3/4 is smaller than one so it has to go first.

hope it helps :) pls give brainliest

3/4, 0.8, 94%

DO IT HES RIGHT

Please help me I have no idea what I am doing.

Answers

Step-by-step explanation:

c because if you times 8 into a that equals 10, b =6-3

A patient requires a 30% decrease in the dosage of his meds. His current dose is 340 mg. What will his dosage be after the decrease?

Answers

Answer:

238 mg

Step-by-step explanation:

340 x 0.30 = 102

340 - 102 = 238

What is the value of N in the expression below

Answers

Step-by-step explanation:

please mark me as brainliest thank you

Please help me!!!!!!

Answers

Answer:

C.) y=-2/3+4

Step-by-step explanation:

You can look at the y-intercept to find the equation really quickly!

For example, the line crosses the y-axis at the value of 4, therefore, the y-intercept is 4.

The only option with a y-intercept of 4 is C

Cuanto es 17 entre un medio

Answers

Answer: 8.5

Step-by-step explanation:

espanol- deberia ser 8.5

english- it should be 8.5 good luck!

Factor the polynomials x^2 + 15x + 56

Answers

Final Answer: [tex](x + 7)(x + 8)[/tex]

Steps/Reasons/Explanation:

Question/Given: Factor the polynomials [tex]x^{2} + 15x + 56[/tex]

Step 1: Ask: Which two numbers add up to [tex]15[/tex] and multiply to [tex]56[/tex]?

[tex]7[/tex] and [tex]8[/tex]

Step 2: Rewrite the expression using Step 1.

[tex](x + 7)(x + 8)[/tex]

~I hope I helped you :)~

PLEASE HELP I WILL GIVE BRAINLIEST!!

Answers

Answer:

The answer to the chart is y=x-1

what's 10× 10 , will giving points out ?

Answers

Answer:

100

Step-by-step explanation:

10 puls 10 10 times lol

100

Explain

Just plus 10 ( 10 times

please help!:)
simplify the complex fraction -9/10 1 3/5

Answers

Answer:

It equals -1 11/25

Step-by-step explanation:

3x + 10 =1 A:x=6B=X=3 C:x=-3

Answers

Answer:

x = -3

Step-by-step explanation:

3x + 10 -10 = 1 - 10

3x = -9

3x / 3 = -9/3

x = -3

A truck driver is trying to decide between two jobs offers. Driving company A offers pay for $600 per week, plus $0.15 per mile driven. Driving company B offers $700 per week, plus $0.10 per mile driven. The truck diver wants to know how many miles would they need to drive in a week to be making the same amount between the 2 companies.

Answers

Answer:

$1,202

Step-by-step explanation:

There ya go

Count the left-handed and right-handed spirals on the cacti in the photograph.
You should get two consecutive terms of the Fibonacci sequence. What are
the numbers?
A. 34 and 55
B. 5and 8
C. 21 and 34
D. 13 and 21
E. 8 and 13

Answers

Answer:

2 = 1 + 1

3 = 2 + 1

5 = 3 + 2

8 = 5 + 3

13 = 8 + 5

21 = 13 + 8.

Fibonacci numbers are found in many structures in nature.

We have just found that these cacti enclose Fibonacci numbers 13 and 21.

13 and 21

Step-by-step explanation:

Can someone please help me
Which value is equivalent to the expression 3^(-3)? *
A.1/27
B.1/9
C.-9
D.-27

Answers

Answer:

A. 1/27

Step-by-step explanation:

Line L is shown in the coordinate plane. a. What are the coordinates of points and ? b. Is the point (16,20) on line L ? Explain how you know. c. Is the point (20,24) on line L? Explain how you know. d. Is the point (80,100) on line L? Explain how you know. e. Write a rule that would allow you to test whether (, ) is on line L.

Answers

Answer:

so its will be the equal number

Step-by-step explanation:

pls dont get mad if I'm wrong I tried :)

3(x+1)-2x=-6
Slove this

Answers

Answer:

x = -9

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Step-by-step explanation:

Step 1: Define Equation

3(x + 1) - 2x = -6

Step 2: Solve for x

Distribute 3: 3x + 3 - 2x = -6Combine like terms: x + 3 = -6Isolate x: x = -9

Step 3: Check

Plug in x into the original equation to verify it's a solution.

Substitute in x: 3(-9 + 1) - 2(-9) = -6Add: 3(-8) - 2(-9) = -6Multiply: -24 + 18 = -6Add: -6 = -6

Here we see that -6 does indeed equal -6.

∴ x = -9 is the solution to the equation.

What is the common ratio for this sequence? 40, 36, 32.4, 29.16 A) 1.1 B) 0.5 C) 2.2 D) 0.9

Answers

Hope this might help u

Answer:

D) 0.9

Step-by-step explanation:

The common ratio of a sequence is the amount you multiply a term by to get the next one. To find this number divide the second term by the first term, so 36/40. This will give you 0.9, to check your answer take the first term and multiply it by the common ratio a few times; you should get the exact sequence listed in the question.

Edgar is scuba diving 50 feet below the water. He is swimming to the surface at a rate of 3 feet per second. Write an equation to represent his depth, d, after s seconds.

Fill in the blank
d = __ s + __
(also to understand better we are doing the equation y = __ x + __ )

Answers

Answer:

I know this is late but the actual answer is d=3s+-50

Step-by-step explanation:

The reason is because he is swimming down, so yeah.

Subtract
-b + 3 from – 116 – 4

Answers

Answer:

-123-b

Step-by-step explanation:

-116-4-(b+3)

-123-b

The point-slope form of the equation of the line that passes through (-4,-3) and (12, 1) is y-1=1/4(x-12). What is
the standard form of the equation for this line?
x - 4y = 8
O x - 4y=2
4% - y = 8
O 49 - y = 2

Answers

Answer:

The answer is: x-4y=8

Will give the brainiest!!
The graph below shows a line segment XY:

HERE ARE THE MULTIPLE CHOICE ANSWERS: What is the slope of the line segment XY?

−2
− 1 over 2
1 over 2
2

Answers

-2. The slope of a function is measured by rise over run. The rise from one point to another is 2 but the run goes towards the left 1 meaning it is negative. 2/-1=-2

Which set of transformations would prove triangle QRS ~ triangle UTS?? Help!

Answers

Answer:

A or the first one

Step-by-step explanation:

Only answer that has dialate (which makes the triangle bigger) and the other answers have translate which just move the triangle so you can eliminate them quickly

What is 30% off $14.16

Answers

The answer to that is 9.91

Answer:

Step-by-step explanation:

14.16*30%= 4.248 or 4.25 off

please help me, this isn't a test or quiz I just need some help.

Answers

the right is answer is B) alternate exterior

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