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3 years ago

Which expression could be used to solve this problem?

Mathematics

2 answers:

IRISSAK [1]3 years ago

8 0

Answer:

C. 3 x (20 + 15)

Step-by-step explanation:

You have to add 20 + 15 to get 45 so the 20 + 15 goes in the (). It says how much time he has practiced in 3 days so you have to multiply the things in the () by 3 so the 3 goes out side the ().

8090 [49]3 years ago

7 0

Answer:

C. 3 × (20 + 15)

Step-by-step explanation:

If Ben practices this way every day, then the amount of time should be the same.

20 minutes of song practice, 15 minutes of scale practice.

20+15=35

multiply the 35 minutes per day by three

35 times 3 equals 105

So the answer is C.

3 × (20 + 15)

3(35)=105

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Find the simple interest on the following hint I = prn

likoan [24]

Answer:

960

Step-by-step explanation:

I=PRN

I=4000(6%)(4)

You first want to convert your 6% to a decimal, you do so by dividing. 6/100= 0.06. Now you multiply to find your interest.

I=4000(0.06)(4)

I=4000(0.24)

I=960

4 0

3 years ago

You have 16 digs for your current volleyball season. There are 3 games left in the season. You want to break your previous recor

g100num [7]

Answer:

we must get more than 4 digs in the remaining 3 games break record of 20

Step-by-step explanation:

given data

current volleyball season = 16 digs

games left in the season = 3

previous record = 20 digs

solution

we consider here the number of digs x that must get in the remaining 3 games to break your record

so for break previous record of 20 digs, we have to get more than 20

so 16 digs must add to x to greater than 20

x + 16 ≥ 20 ...............................1

so x will be

x ≥ 20 - 16

x ≥ 4

so that we must get more than 4 digs in the remaining 3 games break record of 20

3 0

3 years ago

Evaluate the expression.

Veseljchak [2.6K]

Answer:

The answer is $\frac{3}{10}$

Step-by-step explanation:

5 0

2 years ago

Juanita is cutting a piece of construction paper in the shape of a parallelogram. Two opposite sides of the parallelogram have l

Tamiku [17]

Answer:

Second option: 4 cm and 7 cm.

Step-by-step explanation:

A Parallelogram is defined as a type of Quadrilateral, whose opposite sides are parallel and have equal lenght.

Since the opposite sides $(5n-6)cm$ and $(3n-2)cm$ have the same lenght, then:

$5n-6=3n-2$

Now you have to solve for "n":

Add 6 to both sides of the equation.

Subtract 3n to both sides of the equation:

$5n-6+(6)-(3n)=3n-2+(6)-(3n)\\5n-3n=-2+6\\2n=4$

Divide both sides of the equation by 2:

$\frac{2n}{2}=\frac{4}{2}\\\\n=2$

To know the lenght of two adjacent sides, susbtitute $n=2$ into the third side $(2n + 3)cm$ and into one of the the sides that are opposite to eache other. Then:

$(2(2)+3)cm=7cm\\\\(5(2)-6)cm=4cm$

6 0

3 years ago

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harina [27]

The answer is 2. each toy

3 0

3 years ago

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