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Liono4ka [1.6K]

1 year ago

13

Three-fourths of people at the concert are children. If there are 87 children, what is the total number of people at the concert

?

1 answer:

dusya [7]1 year ago

5 0

Answer:

65

Step-by-step explanation:

87 times .75 is 65.25 but since a quarter if a persone does not make sense in this context we round down to the nearest whole number

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to estimate the height of a tree, a geometry student measures the shadow of the tree that is 30 feet from the base tree. They pl

Black_prince [1.1K]

33*5.5=181.5/4=45.375 feet from the stake

3 0

3 years ago

Baileys rectangular dog pen for his Irish setter must have an area of 300 square feet. Also, the length must be 10 feet longer t

Naily [24]

Area of rectangle = length × width
300 = (x+10) × x
300 = 10x + x^2
Now we have the equation y=x^2 + 10x - 300
We can factor this equation to get our zeroes, which are:
-5(1+sqrt(13)),
5(sqrt(13)-1)

We only use the positive zero because we can't have a negative dimension.

Your width would be:
5(sqrt(13)-1)

Your length would be:
5(sqrt(13)-1) + 10

7 0

4 years ago

Five students divided 74 base-ten rods equally among them. how many base-ten rods were left over?

lesya [120]

Answer:

Idont know that question

8 0

3 years ago

Is the given value a solution to the equation? 4(n) - 3 = -2(n) + 9 n=2

nlexa [21]

Answer:

Yes!

The solution to the equation is n = 2

Step-by-step explanation:

Given the equation

$4\left(n\right)-3=-2\left(n\right)+9$

remove the parentheses

$4n-3=-2n+9$

Add 3 to both sides

$4n-3+3=-2n+9+3$

Simplify

$4n=-2n+12$

Add 2n to both sides

$4n+2n=-2n+12+2n$

Simplify

$6n=12$

Divide both sides by 6

$\frac{6n}{6}=\frac{12}{6}$

Simplify

$n=2$

Therefore, the value of n = 2.

Hence,

Yes!

The solution to the equation is n = 2

5 0

3 years ago

Two angles are complementary. The first angle measures (2x + 15)°, and

hichkok12 [17]

Step-by-step explanation:

2x+15=4x+9

2x=6

x=3

***

7 0

3 years ago

Read 2 more answers