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3 years ago

13

Identify the percent, amount, and base in this problem. 75% of what number is 30?

1 answer:

AfilCa [17]3 years ago

3 0

I hope i answered it right but..

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Simplify this 13.) 13y² + 9y + 4y² - 31y

erastova [34]

Answer: $17y^2-22y$

Step-by-step explanation:

$13y^2+9y+4y^2-31y$

$\mathrm{Group\:like\:terms}$

$=13y^2+4y^2+9y-31y$

$\mathrm{Add\:similar\:elements:}\:13y^2+4y^2=17y^2$

$=17y^2+9y-31y$

$\mathrm{Add\:similar\:elements:}\:9y-31y=-22y$

$=17y^2-22y$

3 0

2 years ago

A certain forest covers an area of 2100 km^2. Suppose that each year this area decreases by 5.25%. What will the area be after 6

Neko [114]

Answer:

The area after 6 years is $1519.49km^2$

<em></em>

Step-by-step explanation:

Given

$a = 2100$ --- Initial Value

$r = 5.25\%$ --- Rate

Required

Determine the area after 6 years

Because the area reduces,, the following formula will be used to solve the question.

$y = a*(1 - r)^t$

Here

$t = 6$

So, we have:

$y = 2100*(1 - 5.25\%)^6$

Convert percentage to decimal

$y = 2100*(1 - 0.0525)^6$

$y = 2100*(0.9475)^6$

$y = 1519.47866516$

$y = 1519.49$ -- approximated

<em>The area after 6 years is </em> $1519.49km^2$ <em></em>

4 0

2 years ago

Look at the following expression and tile model. White tiles are positive and gray tiles are negative.

Dovator [93]

Answer:

5

Step-by-step explanation:

8 0

2 years ago

The diagonals of a kite separate the quadrilateral into four congruent triangles

statuscvo [17]

<span>If the sum of two of the sides congruent to each other are greater than that of the sides opposite them, then no. If however the kite forms a rombus ot square, the diagnoles will form four congruent triangles with the base of both being the line of symmetry.
hope this helps :)</span>

6 0

3 years ago

Find the volume of the triangular pyramid shown below

Greeley [361]

Answer:

B

Step-by-step explanation:

6 0

3 years ago