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3 years ago

Which problem can be solved by this number sentence? 3 × 7 = 21

Mathematics

1 answer:

vlada-n [284]3 years ago

5 0

11+10=?????????????????????

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Nadia plans to paint her jewelry box. The box is shaped like a rectangular prism with the dimensions

Pachacha [2.7K]

Answer:

$132\ in^{2}$ is closest to the total surface area of the box

Step-by-step explanation:

we know that

The surface area of the box is equal to

$SA=2B+PH$

where

B is the area of the base

P is the perimeter of the base

H is the height of the box

we have

$L=7\frac{3}{4}\ in=\frac{7*4+3}{4}=\frac{31}{4}\ in$

$W=3\frac{1}{4}\ in=\frac{3*4+1}{4}=\frac{13}{4}\ in$

$H=3\frac{7}{8}\ in=\frac{3*8+7}{8}=\frac{31}{8}\ in$

Find the area of the base B

$B=LW$

$B=(\frac{31}{4})(\frac{13}{4})=\frac{403}{16}\ in^{2}$

Find the perimeter of the base P

$P=2(L+W)$

$P=2(\frac{31}{4}+\frac{13}{4}))$

$P=2(\frac{44}{4})=22\ in$

Find the surface area

$SA=2(\frac{403}{16})+22(\frac{31}{8})$

$SA=(\frac{403}{8})+(\frac{682}{8})$

$SA=\frac{1,085}{8}=135.625\ in^{2}$

6 0

3 years ago

You can make one square with four toothpicks. Show how you can make two squares with 10 toothpicks and five squares with 12 toot

dsp73

Answer:

by doing it the same way you did with the first one.

Step-by-step explanation:

4 0

2 years ago

Twice the difference of a number and 9 is at least 17.

victus00 [196]

Answer:

x ≥ 12.5

Step-by-step explanation:

2(x-9) ≥ 17---Use Distributive Property

2x-18 ≥ 17

2x-18+18 ≥ 17+18

2x ≥ 25

2x/2 ≥ 25/2

x ≥ 12.5

I hope this helps!

8 0

2 years ago

In the sequence {1, 5, 9, 13, 17, …}, which term is a3? a3 = 17 a3 = 9 a3 = 1 a3 = 5

kozerog [31]

$\qquad \qquad\huge \underline{\boxed{\sf Answer}}$

Here's the Answer ~

$\qquad \sf \dashrightarrow \: a_3 = 9$

The term $\sf a_3$ is equal to third term, that is 9

3 0

2 years ago

An anatomy model of an adult human is 7 inches tall. Most adult humans are between 5 feet and 6 feet tall. What is the approxima

mixas84 [53]

Answer:

Step-by-step explanation:

There are 12 inches in 1 feet, so

5 feet = 5 * 12 = 60 inch

6 feet = 6 * 12 = 72 inch

So, we can say most adult humans are between 60 to 72 inches tall

The model is 7 inches tall. So, from the answer choices, 7 * 10 = 70 [the number that is in between 60 to 72]. Thus we can take the model to be 1/10th of the original.

So the scale factor is 1/10, or option B

5 0

3 years ago

Read 2 more answers