2 years ago

Simplify each expression

Mathematics

1 answer:

Verizon [17]2 years ago

8 0

Answer:

-5n-1
72b+56

Step-by-step explanation:

-5n+1-2
-5n-1

-8b+80b+56
72b+56

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Subtract 4 from n then multiply by 6

geniusboy [140]

Answer:

multiply 4 and 6 and the answer should be n-24

Step-by-step explanation:

n-4*6

n-24

3 0

3 years ago

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MrMuchimi

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2 years ago

A car wash detailed 256 cars in 8 hours. At what rate did the car wash detail

Minchanka [31]

32 cars per hour. If you do 256 divided by 8 you get 32.

Hope this helped!

4 0

3 years ago

Drag and drop an answer to each box to correctly explain the derivation of the formula for the volume of a pyramid.

Irina18 [472]

A prism is rectangular shaped,. a pyramid is triangular shaped.

The ratio would be 1 to 3

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3 years ago

Determine the projection of w onto u.

irina [24]

Answer:

A.6.2i-4.2 j

Step-by-step explanation:

We are given that

$u=9i-6j$

$v=-3i-2j$

$w=19i+15j$

We have to find the projection of w on to u.

The project of vector a on b

= $\frac{a\cdot b}{\mid b\mid^2}b$

$w.u=(19i+15j)\cdot (9i-6j)=171-90=81$

$\mid u\mid=\sqrt{x^2+y^2}=\sqrt{9^2+(-6)^2}=\sqrt{117}$

Using the formula

The projection of w on to u

$=\frac{u\cdot w}{\mid u\mid^2}(u)=\frac{81}{117}(9i-6j)$

The projection of w on to u=6.2i-4.2j

Hence, option A is true.

4 0

3 years ago

Read 2 more answers