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3 years ago

What number is 25% of 180

2 answers:

7 0

$p\%=\frac{p}{100}\\\\25\%=\frac{25}{100}=\frac{25:25}{100:25}=\frac{1}{4}\\\\25\%\ of\ 180=\frac{1}{4}\ of\ 180=\frac{1}{4}\cdot180=\frac{180}{4}=\boxed{45}$

TiliK225 [7]3 years ago

4 0

'what number' indicates an unknown value we can represent with 'x'

'is' indicates an equal sign.

25% = 0.25

'of' indicates multiplication.

x = 0.25 * 180

x = 45

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bobby’s christmas list had 3 more than twice as many items on it than johnny’s list. johnny asked for 8 fewer items than bobby.

Nataly [62]

Answer:

Johnny had 5 items and Bobby had 13 items.

Step-by-step explanation:

Let us assume that Johnny has x items and Bobby has y items in their list.

Bobby had 3 more than twice as many items on it than Johnny. So,

$\Rightarrow y=3+2x$ ----------1

Johnny asked for 8 fewer items than bobby. So,

$\Rightarrow y-8=x$ -----------2

Putting the value of x from equation 2 in equation 1, we get

$\Rightarrow y=3+2(y-8)$

$\Rightarrow y=3+2y-16$

$\Rightarrow 2y-y=16-3$

$\Rightarrow y=13$

Putting the value of y in equation 2,

$\Rightarrow 13-8=x$

$\Rightarrow x=5$

So, Johnny had 5 items and Bobby had 13 items.

3 0

3 years ago

How do i explain how the distance on the number line and opposit numbers are related

strojnjashka [21]

Hey there!

The distance on a number line is the distance that a point is from 0.
For example, if you were looking at a number line and there was a point on the number 5, that point would be 5 units away from 0.

Opposite numbers are related because they are the same distance away from 0. For example -3 and 3 are both 3 units away from the number 0.

I hope this helped! :-)

7 0

3 years ago

What is the slope of a line perpendicular to the line whose equation is

GenaCL600 [577]

Answer:

The slope or incline is -5

Step-by-step explanation:

rewrite to get the form

y = ...

x - 5y = -10

- 5y = -10 -x

divide left and right if the = sign by -5 gives:

(-5/-5)y = (-1/-5)x + (-10/-5)

y = 1/5x +2

So the incline is 1/5

a perpendicular line has an incline of -1 *5/1 = -5

The slope or incline is -5

4 0

3 years ago

The ratio of girls to boys is 2:3. There are 12 boys. How many girls are there?

Marianna [84]

Answer:

18 girls

Step-by-step explanation:

2g = 3b

b = 12

g = girls

b = boys

2g = 3*12

2g = 36

g = 36/2

g = 18

5 0

2 years ago

Read 2 more answers

Which expression represents the polynomial −2x^2−4x^4+8x+x^5−2x^3 rewritten in descending order?

tigry1 [53]

The polynomial $-2x^2-4x^4+8x+x^5-2x^3$ arranged in descending order is $x^5-4x^4-2x^3-2x^2+8x$

Step-by-step explanation:

We need to rewrite the polynomial $-2x^2-4x^4+8x+x^5-2x^3$ in descending order.

For writing the polynomial in descending order we arrange the exponents of variables from largest exponent to the smallest exponent.

The given polynomial is:

$-2x^2-4x^4+8x+x^5-2x^3$

The descending order of the polynomial is:

$x^5-4x^4-2x^3-2x^2+8x$

So, the polynomial $-2x^2-4x^4+8x+x^5-2x^3$ arranged in descending order is $x^5-4x^4-2x^3-2x^2+8x$

Keywords: Polynomials

Learn more about polynomials at:

#learnwithBrainly

6 0

3 years ago