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n200080 [17]
2 years ago
14

What value of a makes this proportion 4/12 = a/27

Mathematics
2 answers:
Gnoma [55]2 years ago
6 0

Answer:

a = 9

Step-by-step explanation:

\frac{4}{12} = \frac{a}{27} ( cross- multiply )

12a = 108 ( divide both sides by 12 )

a = 9

Dmitry_Shevchenko [17]2 years ago
4 0

Answer:

The Formula for Percent Proportion is Parts /whole = percent/100. This formula can be used to find the percent of a given ratio and to find the missing value of a part or a whole.

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Y = x^3 + 5x^2 + 3x x= -3
dexar [7]

Answer:

9

Step-by-step explanation:

-3^3 +5*(3)^2 +3*-3

-27+5*9+(-9)

-27+45-9

=9

8 0
3 years ago
Read 2 more answers
Is 18 and 0.3 equivalent
grigory [225]

Answer:

No

Step-by-step explanation:

Because 0.3 is a decimal and 18 is a whole number.

0.3 = 3/10 which is 30%

5 0
3 years ago
Tennis balls with a diameter of 2.5 in.are sold in cans of three. The can is a cylinder. What is the volume of the space in the
Alexxandr [17]

Using 3.14 for PI.

The radius of a ball and the can is half the diameter = 1.25

The height of the can is the height of 3 diameters = 7.5

Volume of one tennis ball:

4/3 x PI x 1.25^3 = 8.18 cubic inches.

Volume of 3 tennis balls: 3 x 8.18 = 24.54 cubic inches.

Volume of can:

PI x 1.25^2 x 7.5 = 36.80 cubic inches.

Space = 36.80 - 24.54 = 12.26 cubic inches.

3 0
3 years ago
Investigate how demand elasticities are affected by increases in demand. Apply the midpoint formula to calculate the demand elas
inn [45]

It should be noted that a good that has a high demand elasticity for an economic variable implies that consumer demand for that good is more responsive to changes in the variable.

<h3>How to explain the demand?</h3>

It should be noted that an elastic demand is one werr the change in quantity demanded due to a change in price is large.

Also, an inelastic demand is one in which the change in quantity demanded due to a change in price is small. When the formula creates an absolute value greater than 1, the demand is elastic.

Here, a good that has a high demand elasticity for an economic variable implies that consumer demand for that good is more responsive to changes in the variable.

Learn more about demand on:

brainly.com/question/1245771

#SPJ1

6 0
1 year ago
Find the gradient of the line segment between the points (3,2) and (2,5).
Alika [10]

The answer is -3, hope this helps!

5 0
3 years ago
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