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klemol [59]
2 years ago
12

What is the value of 3(4x+5y) - 2(7x-3y) when x = -2 and y = 3

Mathematics
2 answers:
Shkiper50 [21]2 years ago
6 0

Answer:

67

Step-by-step explanation:

Subsitute both given values into the equation then continue to simplify the equation

3(4(-2)+5(3)) -2(7(-2)-3(3))

3(-8+15) -2(-14-9)

3(7) -2(-23)

21 +46

67

attashe74 [19]2 years ago
4 0
The answer to this question is 67..
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you can speed from 0 to 25 m/s in 25 seconds and your friend can speed up from 0 to 6 m/s in 6 seconds. who is faster
aksik [14]

Answer:

Neither; see below

Step-by-step explanation:

Your acceleration: a=\frac{\Delta v}{\Delta t}=\frac{25-0}{25}=1m/s^2

Your friend's acceleration: a=\frac{\Delta v}{\Delta t}=\frac{6-0}{6}=1m/s^2

Therefore, since both you and your friend accelerate at the same rate, neither is faster.

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2 years ago
Polygon LMNP slides 5 units right and 4 units down on the coordinate plane. If the original measure of angle M was 50 degrees, w
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Add them all together
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3 years ago
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mr_godi [17]
You have to divide 36 and 2
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Evaluate -3- (-4) - (-2) + 1.
Shtirlitz [24]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
2 less then 3 times a number is 9
Masteriza [31]

\huge\boxed{\text{As an expression:}\ 3x-2=9}

\huge\boxed{\text{Solved for x:}\ x=\frac{11}{3}}

Let's start with "3 times a number". We will use x to represent the number. 3x

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Put it all together to get an expression. \boxed{3x-2=9}

Now, let's solve for the unknown number.

Add 2 on both sides of the equation. 3x=11

Divide both sides of the equation by 3 to isolate x. x=\boxed{\frac{11}{3}}

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