Mathematics High School

Solve the system by Elimination.
7x+9y=30
3x−6y=3
(3, 1)
(3, 5)
(3, -1)
(-3, 5)
please hurry need it now

Answers

Answer 1
(3,1)
7(3)+9(1)=30
21+9=30
3(3)-6(1)=3
9-6=3

Related Questions

Ethan ran 11 miles in 2 hours. What is the unit rate of miles to hour?

Answers

Answer:

5.5 mph

Step-by-step explanation:

Answer:

5.5 miles per hour

Step-by-step explanation:

This is a fraction equal to

11 miles ÷ 2 hours

We want a unit rate where

1 is in the denominator,

so we divide top and bottom by 2

11 miles ÷ 2

2 hours ÷ 2

=  

5.5 miles

1 hour

=  

5.5 miles

hour

= 5.5 miles per hour

Hope this helped :)

4x²+5x+1=0 solve using the quadratic formula
​

Answers

Answer:

Roots: -1, -0.25

Step-by-step explanation:

Hope this helped!

The diagram shows a triangle.
45°
38°
What is the value of s?

Answers

Answer:

97 degrees

Step-by-step explanation:

If 45 + 38 = 83

A triangle is 180 always

so 180-83=97

pls help quickly thank you

Answers

Answer: $637

Step-by-step explanation:

Anna makes unique jewelry. The owner of the "Unique" store agreed with Anna to deliver 20 bracelets a week. At the moment, Anna has 80 bracelets made, and can make 17 bracelets a week. For how many consecutive weeks will Anna be able to supply her bracelets to the "Unique" store?

Answers

Answer:

7 weeks

Step-by-step explanation:

80 ÷ 20 = 4

She over those four week she makes 17 per week. So,

17 × 4 = 68

Next, divide the product by 20:

68 ÷ 20 = 3.4

But 3.4 is only 3 full weeks so then its 3.

Lastly, add the 3 weeks we just solved for the the 4 weeks from before and you get 7 weeks.

So, Anna will be able to supply the "Unique" store for 7 weeks.

I HOPE I HELPED!!!!!!!!!! :))))))

i need help with this​

Answers

Answer:

y=2/3x+5

Step-by-step explanation:

follow the values of x and y

Estimate 38 3/22 - 14 29 by rounding each number to the nearest whole number

Answers

Answer:

600

Step-by-step explanation:

help please
25 + 2v = 47, v = ?

Answers

Answer:

11

Step-by-step explanation:

2v = 47-25

2v = 22

v = 11

a restaurant bill is $42.79. what is the estimated amount of the tip if you tip 20%

a . $20.00
b . $10.70
c . $51.35
d . $8.56

pls help asap :)

Answers

C: $51.35 is the answer. Hope this helps :)

6 - 2/3 (x+5) = 4x solve algebraically for the exact value of x

Answers

Answer:

x = 2

Step-by-step explanation:

1 - Rewrite

6 - 2/3 (x+5) = 4x

2 - Distribute

6 - 2/3x + 10/3 = 4x

3 - Combine like terms and get x alone

6 10/3 - 2/3x = 4x

           +2/3x  +2/3x

          6 10/3 = 4 2/3x

------------------------------- Convert to decimals

6.3333333333.... = 4.333...x

-------------------------------- Divide both sides by 4.33...x

2 = x

Hope this helps :)

what is the slope of the line​

Answers

Answer:

-1/2

Step-by-step explanation:

y = -1/2x + 3

Delta y / Delta x

-1/2

Brainliest much appreciated!

What is the point-slope form of an equation for a line that passes through the point (5, –5) with the slope of 2?

Answers

Answer:

y-5=2(x+5)

Step-by-step explanation:

What is the slope of the line y = 3x + 5?
-3
5
-5
3

Answers

Answer:

3

Step-by-step explanation:

The 'x' part of the equation refers to the slope or gradient.

Answer:

3

Step-by-step explanation:

A car travels 61 miles per hour. At this rate, how far will the car travel in 5 hours?​

Answers

Answer:

305 miles per hour

Step-by-step explanation:

61 miles per hour

61(5)= 305 miles/ hour

305 miles travled in the past 5 hours going 61 miles


A microwave oven costs $124.85 before it is marked down. If it is marked down by 63%, what is its new price, to the
nearest cent?
A.$78.66
b. $61.85
C. $58.68
d. $46.19

Answers

Answer:

D ($46.19)

Step-by-step explanation:

$124.85 * (100% - 63%)

= $124.85 * 37 %

= $124.85 * 0.37

= 46.1945

= $46.19 (to the nearest cent)

Hope this helped!

Answer:

D: $46.19

Step-by-step explanation:

We did this math problem in my class already and I Remember the answer.

An antelope can run 152.5 miles in 2.5 hours. The average speed of the antelope 62 mi/hr

True
False

Answers

Answer:

Step-by-step explanation:

152.2 miles /2.5 hours= 60.88 mph so false.

check by 62 mph * 2.5 hours = 155 miles or more then what the antelope actually ran.

What is the value of the expression below?

7 divided by 2 minus 4.5 x times 3 + 8
–16.5
–2
5
30.8
hurry up plz

Answers

Answer:

-2

Step-by-step explanation:

use pemdas, it works to help you get the correct answer

Answer:

− 13.5 x − 7

Step-by-step explanation:

Find the median of the set of numbers: 100, 200, 450, 29, 1029, 300 and 2001. ​

Answers

Answer: The median is: 300

Hope this helped!

The quotient of 38 times a number and -4

Answers

Answer:

140y

Step-by-step explanation:

35 times a number times -4 is 35×y×(-4) which is -140y

Select the correct answer.
Which expression is equivalent to the given expression?

PLEASE HELP!!

Answers

The answer would be A because if you combine all the like terms you will get A as a result.

-2x^2+8x-9+4x+7x^2+2
-2x^2+7x^2 combine both of these and it will get you 5x^2
And then you would do 8x+4x which would be 12x and lastly you would -9+2 which would be -7 so the answer is A.

Hope this helps!!

Answer:

A. 5x^2+12x-7

-2 + 7= 5

Please help me I beg you I will give you credit plz

Answers

Find slope (y2-y1)/(x2-x1)
Pick any two points on line
(1,15) and (2,25)
(25-15)/(2-1) = 10/1, slope is 10 (rate of change)
Y = 10x + b
15 = 10 + b
The y intercept would be 5

help memememememe memememememe memememememe memememmeme

Answers

Answer:

43

Step-by-step explanation:

48/(2^3+4)*10.75

48/(8+4)*10.75

48/12*10.75

4*10.75

43

Answer:

It is 43

Step-by-step explanation:

What are the coordinates of the vertex of the graph of the absolute value function h(x) = 3|x + 5| + 2?

Answers

Answer:

(-5,2)

Step-by-step explanation:

h(x) = 3|x + 5| + 2 is an absolute value function in vertex form. Vertex form is f(x) = a | x - h | + k with a vertex at (h,k). So find h and k in the function, 3|x + 5| + 2, but remember in the formula h is negative so flip the sign of what ever is in your function. So if h=-5 and k=2, then the vertex is (-5,2).

Please help, points and brainiest, Thank you!!

Answers

Answer:

51 litres.

Step-by-step explanation:

68 / 4 = 17

3/4 of a tank needed to be full.

3 x 17 = 51

solve each system using elimination


8x+lly = 20 5x - 11y = -59​

Answers

Answer:

8x+lly=205x-11y=-59u200b

Step-by-step explanation:

i calculated it

AXYZ = AMNL.
Triangle LNM Triangle _?_.
ZYX
XYZ
YXZ
O
ZXY

Answers

Answer:

4th one is your answer dear.

Step-by-step explanation:

∆LNM ~=∆ZXY

NEED HELP ASAP!!!
Review the diagram.

On a coordinate plane, a vector labeled 120 meters forms angle 25 degrees with the x-axis. It goes to point mirror 1. Another vector labeled 90 meters goes from point mirror 1 to mirror 2. It forms angle 20 degrees with a horizontal line. Point mirror 2 goes to (0, 0).

A laser beam is aimed 25° from horizontal at a mirror 120 m away. The beam bounces off the mirror and continues for an additional 90 m at 20° above horizontal until it hits a target, mirror 2. What is the distance between the origination point and the target?

approximately 85 m
approximately 122 m
approximately 174 m
approximately 194 m

Answers

Answer:

Approximately 85 m

Step-by-step explanation:

Let x represent the distance between the origination point and the target

Distance between original point and mirror 1 = 120 m

Distance between mirror 1 and mirror 2 = 90 m

The measure of angle Opposite the distance between the origination point and the target = 20 + 25 = 45°

Use Cosine rule to find x as shown below:

Use The Law of Cosines to find side a first:

[tex] a^2 = b^2 + c^2 - 2bc \times Cos(A) [/tex]

Where,

a = x

b = 90 m

c = 120 m

A = 45°

Plug in the values

[tex] x^2 = 90^2 + 120^2 - 2(90)(120) \times Cos(45) [/tex]

[tex] x^2 = 22,500 - 21,600 \times Cos(45) [/tex]

[tex] x^2 = 22,500 - 15,273.5065 [/tex]

[tex] x^2 = 7,226.4935 [/tex]

Square both sides

[tex] x = \sqrt{7,226.4935} [/tex]

[tex] x = \sqrt{7,226.4935} [/tex]

x ≈ 85 m

Answer: AAAAAAA-85!!!!!

Step-by-step explanation:

Select the correct answer.
7
3
77
X
A) 363
C) 7
B) 33
D) 77

Answers

Answer:

B) 33

Step-by-step explanation:

Since , both these triangle are similar
Therefore the sides are in the same ratio
This implies , 3/7=x/77
=> x= 3*77/ 7
x= 33
Hope it helps :))

Can someone help me ASAP

Answers

Answer:

city y is the coldest

Step-by-step explanation:

city x = -35 c

city y = -49 f

city z = -40 f

how you do it,

to get celsius

Fahrenheit degrees minus(-) 32, multiplied by 5, and divided by 9  

to get Fahrenheit

Divide by 5, multiply by nine, add 32

Answer:

-31 F = -35 C

-45 C = -49 F

-40 C = -40 F

City Y is coldest

Fahrenheit to Celsius conversion (°F to °C)


Select the coefficients in the following expression!

Answers

Answer:

17, 5, and 10

Step-by-step explanation:

a coefficient is a multiplicative factor in some term of a polynomial. the numbers that are alone are constants.

The answer is A , C And F
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