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frozen [14]
3 years ago
5

$8.07 is 30% of what number?

Mathematics
2 answers:
Westkost [7]3 years ago
4 0

Answer:

$26.9

Step-by-step explanation:

30/100 * x = $8.07

30x=807

divide both sides by 30

therefore

x =$26.9

Ber [7]3 years ago
3 0

Answer:

$11.53

Step-by-step explanation:

Hope i helped :)

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Xelga [282]
OMG !!!!!!! I HAVE THE SAME QUESTION TO ASK

7 0
3 years ago
Verify the identity. <br><br> sin (x+pi/2)=cos x
hram777 [196]
Given data 
<span>sin (x+pi/2)=cos x
</span>now using sin law
sin(a+b)=sin(a)cos(b)+cos(a)sin(b)
now using above values
sin(pi/2+x)=sin(pi/2)cos(x)+cos(pi/2)sin(x)
as we know that
sin(pi/2)=1
cos(pi/2)=0
now putting these values
sin(pi/2+x)=1*cosx+0*1
sin(pi/2+x)=cosx
hence proved that

<span>sin (x+pi/2)=cos x</span>
4 0
3 years ago
Li rode her bike 25% of the way to school. She rode 5 blocks. How many blocks does Li live from school?
Alenkasestr [34]

Answer:

20 Blocks

Step-by-step explanation:

First you would realize that 5 blocks is only 1/4 of the way to school because 1/4 is 25%

Next you should know that you just need to add 5 four times.

Lastly you would multiply 4*5=20

So therefore she lives 20 blocks from her school

7 0
3 years ago
Read 2 more answers
What is the slope of the line y=2x+5?​
sweet [91]
Answer:

The slope is 2

Explanation:

The equation is written in y=mx+b
M would always be the slope and b the y intercept

Hope this helps!!
4 0
2 years ago
Read 2 more answers
13. The radius of Earth is approximately 6.4 x 100 m. Use the formula V = 4/3pr^3
romanna [79]

<u>We are given</u>

  • Radius of Earth; 6.4 x 100 meters = 640 meters

Clearly, the shape of the earth is a sphere. Thus, to determine the volume of the earth, we will use a formula that determines the volume of a sphere.

\implies \text{Volume of sphere =} \   \dfrac{4\pi r^{3}}{3}

When we substitute the radius in the formula, we get;

\implies\text{Volume of sphere} = \dfrac{4\pi (640)^{3}}{3}

\implies\text{Volume of sphere} = \dfrac{4\pi (640)(640)(640)}{3}

Take π as 3.14

\implies\text{Volume of sphere} = \dfrac{4\pi (640)(640)(640)}{3}

\implies \text{Volume of sphere} = \dfrac{4(3.14)(640)(640)(640)}{3}

Simplify the numerator;

\implies \text{Volume of sphere} = \dfrac{4(3.14)(640)(640)(640)}{3}

\implies \text{Volume of sphere} = \dfrac{3292528640}{3}

Divide the numerator by 3;

\implies \text{Volume of sphere} = \dfrac{3292528640}{3}

\implies \text{Volume of sphere} = \boxed{1097509546.67 \ \text{m}^{3} } \ \ \ (\text{Estimated})

4 0
1 year ago
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