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3 years ago

7

Andre pays $13 for 3 books. Diego bought 12 books priced at the same rate. How much did Diego pay for the 12 books? Explain your

reasoning
.

1 answer:

sergeinik [125]3 years ago

6 0

Answer:he would pay 156

Step-by-step explanation:i did the math

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Given the following triangle, if c = square root of 7 and a = 1, find the measure of B.

Darya [45]

Answer:

68°

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you that the relation between the angle's adjacent side and the hypotenuse is ...

Cos = Adjacent/Hypotenuse

This means ...

cos(B) = a/c

B = arccos(1/√7) ≈ 68°

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3 years ago

Choose all of the equivalent expressions of (a + b)(x + y).

lara31 [8.8K]

Answer:

(a + b)x + (a + b)y

Step-by-step explanation:

You would have to factor out the expression to find the answer.

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3 years ago

7 Each day from Monday to Friday, Enrico uses a rideshare scooter to

nekit [7.7K]

Answer:

One all-around trip takes 2.6, while to and from work takes 1.3 miles

Step-by-step explanation:

We know that he rides to and from work from Monday to Friday. This is a total of five days, and since he goes to and from work, he does it twice, meaning he has 5 x 2 = 10 trips. These 10 equal trips all sum to 13 miles, so one trip takes 1.3 miles.

7 0

3 years ago

A boy's age in ten year time will be four times his age five years ago. Find his present age.

Katyanochek1 [597]

Answer:

He is ten.

Step-by-step explanation:

10 yrs old. Go ahead 10 yrs to make 20. Which is four times as much as five years old. (Which is 5 years before 10)

Hope this helps! :)

8 0

3 years ago

Martin is using unit cubes to build a tower in the shape of a rectangular prism. A decripion of the tower is listed the bottom l

leva [86]

Answer:

Volume of the completes tower = 160 units³

Step-by-step explanation:

Martin is using unit cubes to build a tower in the shape of rectangular prism.

Bottom layer of the prism is in the square shape.

Since number of unit cubes used in the bottom layer = 16

So, one side of the square base will measure = √16 = 4 units

Therefore, Length = width = 4 units

On this base, additional layers added on the top = 9

Therefore, height of the tower = (9 + 1) = 10 units (each layer having 16 cubes)

Volume of the tower = Volume of the rectangular prism

= Length × width × height

= 4×4×10

= 160 cubic units.

Volume of the completed tower will be 160 cubic units.

5 0

3 years ago