3 years ago

Plz help me I could really use it and i would be so thankful cause I really suck at math:)

2 answers:

8 0

The answer is A. Mr. Lee gave 7 drum lessons yesterday. If each lesson lasted $\frac{1}{4}$ hour, how much time did he spend giving lessons? Hope this helps! :D

Nady [450]3 years ago

5 0

A is 7/4
There's a start

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-(r+4) = -3 <br> Solve each equation.<br> Please explain step by step so i can understand!

lions [1.4K]

Answer:

$-\left(r+4\right)=-3$

First, Divide both sides by -1,

$\frac{-\left(r+4\right)}{-1}=\frac{-3}{-1}$

$r+4=3$

Then Subtract 4 from both sides,

$r+4-4=3-4$

$r=-1$

6 0

3 years ago

Find the slope for -5,9 and 5,5

posledela

Answer:

-0.4

Step-by-step explanation:

y=-0.4x+7

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3 years ago

Every new computer costs $454.86 from a local store. The nearby school has a policy that every 3 children must have at least 1 c

Leto [7]

Answer:

27,291.6$

Step-by-step explanation:

1=3

12/3=4computers

4×15=60

60×454.86=27,291.6$

hope you will find it helpful

3 0

3 years ago

A triangle has side lengths of (1.2u+1.8v)(1.2u+1.8v) centimeters, (6.5u+8.7w)(6.5u+8.7w) centimeters, and (5.8w-6.9v)(5.8w−6.9v

Komok [63]

Answer:

7.7u - 5.1v + 14.5w

Step-by-step explanation:

Given length:

Side A = (1.2u+1.8v) centimeters,

Side B = (6.5u+8.7w) centimeters

Side C = (5.8w-6.9v) centimeters

Perimeter of a triangle = side A + side B + side C

= (1.2u+1.8v) + (6.5u+8.7w) + (5.8w-6.9v)

= 1.2u + 1.8v + 6.5u + 8.7w + 5.8w - 6.9v

Collect like terms

= 1.2u + 6.5u + 1.8v - 6.9v + 8.7w + 5.8w

= 7.7u - 5.1v + 14.5w

Therefore, the perimeter of the triangle is 7.7u - 5.1v + 14.5w

5 0

4 years ago

Solve -7/2=-28 please solve and show work

Assoli18 [71]

Step-by-step explanation:

-7/2 = -28

-7 = -28 × 2

-7 = -56

5 0

3 years ago