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3 years ago

8. For every $20 Kevin earns, his parents require him to save $5. What percent of her

Mathematics

2 answers:

Advocard [28]3 years ago

7 0

Answer:

$\frac{3}{4}$ or $75%$ %

Step-by-step explanation:

Lets break down this question to make it easier to solve for:

For every $20 Kevin earns, $5 is saved

This leaves $15 to be spent

$20 can be broken down into 4 sets of $5 as

$5*4 = 20\\$

With that said, Kevin only saves one set of $5, leaving 3 sets to be spent.

Out of the 4 sets of $5, 3 are spent, meaning:

$20-5=15\\\frac{15}{20} /5 = \frac{3}{4}$

$\frac{3}{4} = 75$ %

I am happy to help with any other questions you might have in the future and I will continue to work hard to provide the best answers!

trapecia [35]3 years ago

6 0

75% is the amount of money he can spend and the £5 is the 25% he has to save up .

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The radius of Earth is 6,378.1 km, which is 63,532.9 km less than the radius of Jupiter. Find the radius of Jupiter

Vikentia [17]

All you need to do is add these two numbers together.

Radius of Jupiter = Radius of Earth + Difference between the two

Radius of Jupiter = 6378.1 + 63532.9

Radius of Jupiter = 69911 km

8 0

3 years ago

find the point-slope equation of the line perpendicular to the line y=2x+5 passing through the point (1,4). (please include solu

pishuonlain [190]

First off, let's keep in mind that perpendicular lines have negative reciprocal slopes, hmmm so what's the slope of y = 2x + 5?

well, notice, that equation is in slope-intercept form, thus $\bf y=\stackrel{slope}{2}x+5$ .

$\bf \stackrel{\textit{perpendicular lines have \underline{negative reciprocal} slopes}}
{2\implies \stackrel{slope}{\cfrac{2}{1}}\qquad \qquad \qquad \stackrel{reciprocal}{\cfrac{1}{2}}\qquad \stackrel{negative~reciprocal}{-\cfrac{1}{2}}}$

so, we're really looking for the equation of a line whose slope is -1/2 and runs through 1,4.

$\bf (\stackrel{x_1}{1}~,~\stackrel{y_1}{4})\qquad \qquad \qquad 
slope = m\implies -\cfrac{1}{2}
\\\\\\
% point-slope intercept
\stackrel{\textit{point-slope form}}{y- y_1= m(x- x_1)}\implies y-4=-\cfrac{1}{2}(x-1)$

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3 years ago

Evaluate 48/6-10/3 please and thank you :)))

vodomira [7]

Answer:

14/3

Step-by-step explanation:

Simplify the following:

48/6 - 10/3

Hint: | Reduce 48/6 to lowest terms. Start by finding the GCD of 48 and 6.

The gcd of 48 and 6 is 6, so 48/6 = (6×8)/(6×1) = 6/6×8 = 8:

8 - 10/3

Hint: | Put the fractions in 8 - 10/3 over a common denominator.

Put 8 - 10/3 over the common denominator 3. 8 - 10/3 = (3×8)/3 - 10/3:

(3×8)/3 - 10/3

Hint: | Multiply 3 and 8 together.

3×8 = 24:

24/3 - 10/3

Hint: | Subtract the fractions over a common denominator to a single fraction.

24/3 - 10/3 = (24 - 10)/3:

(24 - 10)/3

Hint: | Subtract 10 from 24.

| 2 | 4

- | 1 | 0

| 1 | 4:

Answer: 14/3

5 0

4 years ago

A set of equations is given below:

ipn [44]

The correct answer is 'Equation F can be written as 2d + 1 = 3d + 7'. In order to find the answer to a system of equations, the two equations must be set equal to each other. For instance, if we had the equations x = y + 1 and x = 3y - 1, we would set the two equations equal to one another to find the answer.

x = y + 1
x = 3y - 1
y + 1 = 3y - 1
1 = 2y - 1
2 = 2y
1 = y

x = y + 1
x = 1 + 1
<span>x = 2

We can use this to solve the set of equations above.

</span><span>2d + 1 = 3d + 7
</span>1 = d + 7
-6 = d

c = 2d + 1
c = 2(-6) + 1
c = -12 + 1
c = -11

Hope this helps!

6 0

3 years ago

Read 2 more answers

What is the gcf of 40 and60

Nostrana [21]

20 is the gcf ofn40 and 60

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4 years ago