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saul85 [17]
3 years ago
11

7th grade math question please help me?!

Mathematics
1 answer:
topjm [15]3 years ago
3 0

Answer:

D

Step-by-step explanation:

Since X's are also 3 and constants are also 3 so it makes up the equation

3x+3

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Let u = <-6, 1>, v = <-5, 2>. Find -4u + 2v.
34kurt
U = <-6,1>
-4u = -4*<-6,1>
-4u = <-4*(-6),-4*1>
-4u = <24,-4>
----------------------
v = <-5,2>
2v = 2*<-5,2>
2v = <2*(-5),2*2>
2v = <-10,4>
----------------------
-4u + 2v = <24,-4> + <-10,4>
-4u + 2v = <24+(-10),-4+4>
-4u + 2v = <24-10,-4+4>
-4u + 2v = <14,0>
----------------------
Answer: B) <14,0>

4 0
3 years ago
I need this done fast
kramer

Answer: 1) V≈1244.07 in             2) V≈54286.72 ft         3) V≈23816.41 yd

Step-by-step explanation:

4 0
3 years ago
What is the volume of a rectangular prism whose length is 2x+1 units, width is x-2 units, and whose height is 3x units?
Helen [10]

Answer:

V = 6x^3 - 9x^2 - 6x (which matches the third answer choice)

Step-by-step explanation:

The volume of a rectangular prism of length L, depth W and height H is

V = L * W * H.

Thus,

in this case,

V = (2x + 1)(x - 2)(3x).

The order in which we multiply these quantities together is immaterial.

Working from left to right, we get:

V = (2x^2 - 3x - 2)(3x), and then:

V = 6x^3 - 9x^2 - 6x (which matches the third answer choice)

4 0
3 years ago
A plumber charges $45 for a service call to come to your house and $18 an hour while he is working. Write a function that shows
Brilliant_brown [7]

Answer:

This relationship can be represented by a linear equation

y=18x+45

Step-by-step explanation:

y=18x+45

Where x is time in hours

6 0
3 years ago
Help me please and thanks:)
pshichka [43]

Answer:

I would have to say it would be A

6 0
3 years ago
Read 2 more answers
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