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3 years ago

10 is 40% of what number

Mathematics

2 answers:

Law Incorporation [45]3 years ago

6 0

25 is the 40% of 10.

Reptile [31]3 years ago

3 0

Let the unknown number be a ..
40% of a = 10
=> 40/100a = 10
=> 2/5a = 10
=> 2a = 10 * 5
=> a = 50/2
=> a = 25

so 10 is 40% of 25 ..

Hope it helps !!

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X+19=13 Find the value of x.

Oliga [24]

To find the value of x we need to use the INVERSE OPERATION of addition which is subtraction. Then we will check our work. lets do it:-

x + 19 = 13
x = ?
13 - 19 = x
13 - 19 = -6
x = - 6

CHECK OUR WORK:-

x + 19 = 13
x = -6
-6 + 19 = 13
We were RIGHT!!

So, x = -6

Hope I helped ya!! xD

4 0

4 years ago

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Find the length of the missing side. Leave your answer in simplest radical form.

lozanna [386]

Answer:

The other side is 7.48 yards.

Step-by-step explanation:

Given that,

Hypotenuse = 15 yards

One leg = 13 yards

We need to find the length of the other leg. We can use the Pythagoras theorem to find it such that,

$H^2=b^2+h^2$

Where

h is other leg

Put all the values,

$h=\sqrt{H^2-b^2} \\\\h=\sqrt{(15)^2-(13)^2} \\\\h=7.48\ yd$

So, the other side is 7.48 yards.

6 0

3 years ago

1.Sam has a piggy bank full of quarters, dimes, nickels, and pennies. Describe two ways he could make $0.78 using only two kinds

insens350 [35]

3 quarters and 3 pennies, or 7 dimes 1 nickel and 3 pennies

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3 years ago

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5 0

3 years ago

Quadrilateral QRST is a square. If the measure of angle RQT is 3x - 6. Find the value of x.

trapecia [35]

Given that quadrilateral QRST is a square.

Each angle of a square is of 90 degrees.

Angle <RQT is also an angle of 90 degrees.

We also given angle RQT = 3x - 6.

So, we can setup an equation as 3x-6 =90.

Now, we need to solve the equation for x.

6 is being subtracted from left side.

We always apply reverse operation. Reverse operation of subtraction is addition.

So, adding 6 on both sides of the equation, we get

3x-6+6 =90+6.

3x = 96.

3 is being multipied with x, in order to remove that 3, we need to apply reverse operation of multiplication.

So, dividing both sides by 3.

$\frac{3x}{3} = \frac{96}{3}$

x=32 (final answer).

3 0

3 years ago