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3 years ago

8

#8 Tessa has a plan for a set of stairs made of concrete, as shown. Each stair is 1 point the same width and height and is talle

r than the previous one by the same amount. What is the volume of concrete needed for the set of stairs?
Picture below:

1 answer:

Afina-wow [57]3 years ago

6 0

Answer: 2.43m^3

Step-by-step explanation:

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Solve 3(x – 6) + 3 = –9.

Alik [6]

Answer:

d) x = 2

Step-by-step explanation:

3(x - 6) + 3 = -9

<em>open the parenthesis</em>

3x - 18 + 3 = -9

3x - 15 = -9

<em>add 15 to both sides of the equation</em>

3x - 15 + 15 = - 9 + 15

3x = -9 + 15

3x = 6

<em>divide both sides by 3</em>

3x/3 = 6/3

x = 6/3

x = 2

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3 years ago

What is the difference in length between a 11/4 inch button and a 3/8 inch button

Nutka1998 [239]

Answer:

$\frac{19}{8}$

Step-by-step explanation:

First, multiply the two denominators together to get the shared denominator, which will allow you to actually subtract the two numbers. 4 × 8 = 32, so the shared denominator will be 32.

Then, cross-multiply. 11 × 8 = 88, so $\frac{11}{4}$ becomes $\frac{88}{32}$ . 3 × 4 = 12, so $\frac{3}{8}$ becomes $\frac{12}{32}$ .

Now, you can subtract. $\frac{88}{32} -\frac{12}{32} =\frac{76}{32}$

Finally, simplify. $\frac{76}{32} =\frac{19}{8}$ . The final difference is $\frac{19}{8}$ .

4 0

3 years ago

Help Evaluate each expression for d = -3.

Pavel [41]

Answer:
1) 9
2) 7
3) -10
4) -54
5) -64

Step-by-step explanation:
It’s just basic substitution
Hope this helps!

3 0

3 years ago

One package of socks cost $7. How many packages can you but with $56?

Akimi4 [234]

Step-by-step explanation:

$7 = 1 package socks

%56 = ??

$56/$7 × 1 package socks

= 8 × 1

= 8 package socks

Hope it helps!

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3 years ago

A shipping company charged $15 to ship a package and 5% of the shipping charge for insurance on the package. What was the total

pickupchik [31]

Take $15 and multiply it by 0.05 (this will get you the percent). You should get 0.75. So you add 0.75 to $15 and you should get $15.75

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3 years ago

Read 2 more answers