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GalinKa [24]
2 years ago
8

Solve the following system using either linear combination or substitution. Round any answers to the hundredths place. Show all

work
x-10y=6
y=-5x-23
Mathematics
1 answer:
12345 [234]2 years ago
3 0
So if y=-5x-23 then we can plug that value in for y in x-10y=6, so it becomes

x-10(-5x-23)=6

x+50x+230=6

51x=-224

x=-4.39

plug this x value into the equation y=-5x-23

y=-5(-4.39)-23

y=21.95-23

y=-1.05
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yawa3891 [41]

Answer:

B. 4/3

Step-by-step explanation:

slope-intercept formula is y=mx+b, where m is the slope and y has to be by itself.

dividing 4 by 3 cant be more simplified than 4/3.

7 0
3 years ago
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×-2+2×+4+2×-2=180 what does x equal in this equation.
daser333 [38]

Answer:

<u>x = 36</u>

Here's how I got that:

<em>    - Group like terms -</em>

x - 2 + 2x + 4 + 2x - 2 = 180

                    ↓

      5x - 2 + 4 - 2 = 180

                    ↓

              5x = 180

<em>  - Divide both sides by 5 - </em>

<em>         </em>  5x/5 = 180/5

                   ↓

<em>                </em><u><em>x </em></u><u>= 36</u>

<em>~ That's all folks ~</em>

<em>-Siascon</em>

6 0
2 years ago
A cell phone tower that is 45 meters tall casts a shadow that is 6 meters long. How tall is the tree?
Art [367]
The tree is 27 feet tall.
4 0
3 years ago
What is the polynomial in standard form?
lilavasa [31]
That’s the answer ❤️❤️❤️Hope that helps!!!

6 0
3 years ago
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A line passes through the points (1, –6) and (4, 3).
Marina CMI [18]

Answer:

y = 3x - 9

Step-by-step explanation:

We first need to find the slope (m)

m = \frac{y_2-y_1}{x_2-x_1} = \frac{3 - (-6)}{4-1} = \frac{9}{3} = 3

y = mx + b

y = 3x + b

(4, 3)

y = 3x + b

3 = 3(4) + b

3 = 12 + b

-12  -12

-9 = b

(1, –6)

y = 3x + b

-6 = 3(1) + b

-6 = 3 + b

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-9 = b

y = 3x - 9

To check:  (1, –6)

y = 3x - 9

-6 = 3(1) - 9

-6 = 3 - 9

-6 = -6

Hope this helps!

6 0
1 year ago
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