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3 years ago

13

Can someone plz answer this

2 answers:

podryga [215]3 years ago

3 0

Divide 20xy^2 - 36y by 5xy - 9. I got the quotient 4y.

Check this by mult. 5xy - 9 by 4y.

Virty [35]3 years ago

3 0

They are asking you to factor this polynomial. So, if you want to turn 20xy(squared)-36y so that it is represented in distributive property, you answer is going to be 4y, because 20xy(squared)-36y=4y(5xy-9). You can even use the distributive property to check the answer, 4y.

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Which pony lies on the line described by the equation below? y + 4 = 4 ( x - 3)

CaHeK987 [17]

(3, -4) is on the line because the equation is point-slope equation where the point (x1, y1) is;
y - y1 = m(x- x1)

5 0

3 years ago

Lynn has a box of crayons.

Scrat [10]

Answer:

<em>There are 72 crayons in the box</em>

Step-by-step explanation:

<u>Fractions</u>

To solve this problem we'll manage numbers as fractions to keep the precision up to the end of it.

Lynn has a box of crayons. It's given 4/9 of the crayons are blue. The remaining crayons are:

$1-\frac{4}{9}=\frac{5}{9}$

From that portion, 65% are red, or equivalently, 35% are yellow.

We write 35% as a fraction:

$\displaystyle 35\%=\frac{35}{100}=\frac{7}{20}$

Thus, the portion of yellow crayons is:

$\displaystyle \frac{7}{20}\cdot \frac{5}{9}=\frac{7}{36}$

This fraction of x crayons is equal to 14, thus:

$\displaystyle x=\frac{14}{\frac{7}{36}}=14\cdot\frac{36}{7}$

x = 72

There are 72 crayons in the box

7 0

3 years ago

Help with this one!<br><br><br> Show steps if you can pls :)

lianna [129]

Answer:

110%

Step-by-step explanation:

just divide by 2

20/2 = 10

22/2 = 11

so x% of 10 = 11

1.10 just like the last problem

110%

4 0

3 years ago

A building engineer analyzes a concrete column with a circular cross section. The circumference of the column is 18π meters.

Whitepunk [10]

Answer:

$A=81\pi\ m^{2}$

Step-by-step explanation:

Step 1

Find the radius of the circular cross section

we know that

The circumference is equal to

$C=2\pi r$

we have

$C=18\pi\ m$

substitute and solve for r

$18\pi=2\pi r$

simplify

$18=2 r$

$r=9\ m$

Step 2

Find the area of the circular cross section

The area of the circle is equal to

$A=\pi r^{2}$

we have

$r=9\ m$

substitute

$A=\pi (9)^{2}$

$A=81\pi\ m^{2}$

8 0

3 years ago

A gardener installed 42.6 meters of fencing in a week. He installed 13.45 meters on Monday and 9.5 meters on Tuesday . He instal

kvasek [131]

6.55 meters of fencing. Simply subtract 13.45 meters and 9.5 meters from 42.6 meters, and then divide by 3.

8 0

3 years ago