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nexus9112 [7]
1 year ago
12

Shannon graphed the system of equations. 7x – 4y= –8 y = x – 3 What is the closest approximate solution to the system of equatio

ns? (–5, –7.2) (–5, –6.8) (–5, –6.2) (–5, –5.9)

Mathematics
2 answers:
Butoxors [25]1 year ago
5 0
The graph shows the solution of your equations is
.. (x, y) = (-6 2/3, -9 2/3)

The closest point to that of the choices offered is (-5, -7.2).

___
The offered "approximations" are not very good approximations.

Licemer1 [7]1 year ago
5 0

we have

7x-4y=-8 -------> equation A

y=x-3 ------------> equation B

we know that

The solution of the system of equations is the intersection point both graphs

so

Using a graphing tool

see the attached figure

The solution is the point  (-6.7,-9.7)

therefore

<u>the answer is</u>

the closest approximate solution to the system of equations is (-5,-7.2)

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Find the area of the shape shown below.
Liula [17]

Answer:

31.5

Step-by-step explanation:

We can add the areas together

We have a rectangle and a triangle

The area of the rectangle is

A = lw

   = 7*3

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The area of the triangle is

A = 1/2 bh

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Add them together

A = 21 + 10.5

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3 0
2 years ago
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2 years ago
A random sample of 15 observations from the first population revealed a sample mean of 350 and a sample standard deviation of 12
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Answer:

Step-by-step explanation:

Hello!

You have two random samples obtained from two different normal populations.

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Sample 2

n₂= 17

X[bar]₂= 342

S₂= 15

At α: 0.05 you need to obtain the p-value for testing variances for a one tailed test.

If the statistic hypotheses are:

H₀: σ₁² ≥ σ₂²

H₁: σ₁² < σ₂²

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