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Nutka1998 [239]
3 years ago
5

What is the value of 3x^2– 7x + 9 when x = 4?

Mathematics
1 answer:
xxMikexx [17]3 years ago
6 0

Answer:

29

Step-by-step explanation:

just substitute x with 4 in the equation :)

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Brainliest if it its right
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Answer:

A = <u>40</u> mm^{2}

Step-by-step explanation:

The equation for finding the area of a trapezoid is A= \frac{a + b}{2}h.

In this equation, a=4, b=6, h=8.

A = \frac{4 + 6}{2}8.

4+6=10
10/2=5
5x8=40

Hope this helps!

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2 years ago
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True or false: the square root of a number is always less than that number. Select one: A. true B. false
aleksandrvk [35]

Answer:

True

Step-by-step explanation:

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3 years ago
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Can someone please help me find the measure of the exterior angle.
natta225 [31]

Answer:

X=128°

Step-by-step explanation:

Because an exterior angle of a triangle is equal to of the two opposite interior angle.

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In this case the part marked red = 90° because is a right angled triangle.

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3 years ago
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I really need help asap please
gizmo_the_mogwai [7]
We can use the substitution method to solve this problem.

The second equation is \sf y=2x, so we can plug in 2x for 'y' in the first equation:

\sf 5x-2y=3

\sf 5x-2(2x)=3

Multiply:

\sf 5x-4x=3

Combine like terms:

\sf x=3

This is the x-value of our solution, we can plug this into any of the two equations to find the y-value:

\sf y=2x

\sf y=2(3)

Multiply:

\sf y=6

This is the y-value of our solution. So our entire solution is (3, 6).
5 0
3 years ago
Rosie spent a total of $9.36 over 4 weeks. She spent the same amount of money each week. How much money did Rosie spend each wee
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Answer:

2.34

Step-by-step explanation:

9.36÷4 =2.34

you divide on 4as showen

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