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wlad13 [49]
3 years ago
15

How do I calculate percentages?

Mathematics
1 answer:
devlian [24]3 years ago
5 0
What kind of percentages? Is increase here's how..... 1. First work out the difference (increase amount) between the two numbers you are comparing. 2. Increase = New Number - Original Number. 3. Then divide the increase by the original number and multiply the answer by 100. 4. % increase = Increase divided by the Original Number x 100.
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Solve the equation for a k=4a
nata0808 [166]

Answer: a = \frac{K}{4+9b}

Step-by-step explanation:

Rewrite the equation as  4a + 9ab=K

Factor out a of 4a + 9b

a (4 + 9b) = K

divide each term by 4 + 9b and simplify

=\frac{K}{4+9b}

7 0
3 years ago
Guys I really need help on this
Pani-rosa [81]
What do you need help on? I could totally lend a hand
7 0
3 years ago
HELP PLS!!!!!! Select the correct location on the number line.
Elza [17]

Answer:

Point E on the number line represents the approximate volume of a cylinder with a radius of 4 units and height of 4 units.

Step-by-step explanation:

It is given that the radius of the cylinder is 4 units and the height of the cylinder is 4 units.

The volume of the cylinder is

v = \pi \: r {}^{2} h

Where, r is radius and h is height of the cylinder.

Substitute r=4, h=4, π=3.14 in the above formula.

v = (3.14)(4) {}^{2} (4)

v = 200.96

The volume of  the cylinder is 200.96. Therefore, point E on the number line represents the approximate volume of a cylinder with a radius of 4 units and height of 4 units.

3 0
2 years ago
2nd time asking please helpp!!
galben [10]

Answer:

exact form is 6/5 its decimal form is 1.2, and mixed numbers is 1  1/5

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Help!? I have to use elimination to solve it btw
anygoal [31]

Answer:

(-4, 5)

Step-by-step explanation:

The problem is a system of equations where you have two variables and can use the method of eliminate (eliminating one of the variables) to solve.  In this case, you will need to multiply one of the fractions by a factor to eliminate a variable.  It seems easiest to multiply the first equation by a factor of -5:

-5(x - 3y) = -24 (distribute) -5x + 15y = 120

Add the equations:

-5x + 15y = 120

<u>+5x + 8y = -5</u>

      23y = 115 (divide by 23)

         y = 5

Solve for 'x':  x - 3(5) = -24 or x - 15 = 24 (add 15) x = -4

Ordered pair: (-4, 5)

7 0
4 years ago
Read 2 more answers
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