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Hunter-Best [27]
2 years ago
11

How do you find the radius of a circle?

Mathematics
2 answers:
notka56 [123]2 years ago
8 0

Answer:

Divide the diameter by two

example if the diameter is 25 you divide 25 by 2 to get 12.5 as your radius .

jok3333 [9.3K]2 years ago
6 0
Divide the diameter by 2
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What does it mean to square a number? Provide an example to support your answer.
shutvik [7]

Answer:

When squaring a number it is essentially taking a number and multiplying it by itself. For example, 5^2 is 5×5 (=25).

5 0
2 years ago
How do you find the value of t in -t/7=1/15
kolezko [41]
First, multiply the 7 on both sides.
\frac{-t}{7} =  \frac{1}{15}
-t =  \frac{7}{15}
Finally divide by -1 on both sides to get t = -7/15 as your answer.
3 0
3 years ago
Approximate the change in the volume of a right circular cylinder of fixed radius requals21 cm when its height decreases from he
Tasya [4]
The volume of the cylinder is given by:
 V = pi * r ^ 2 * h
 For h = 12cm:
 V1 = pi * ((21) ^ 2) * (12)
 V1 = 16625.30832 cm ^ 3
 For h = 11.9cm:
 V2 = pi * ((21) ^ 2) * (11.9)
 V2 = 16486.76409 cm ^ 3
 The change in volume is given by:
 V1-V2 = 16625.30832-16486.76409
 V1-V2 = 138.54423 cm ^ 3
 Answer:
 the change in the volume is:
 V1-V2 = 138.54423 cm ^ 3
4 0
3 years ago
Write and solve a proportion to answer the question.<br> 72 is what percent of 45?
Ivanshal [37]

Answer:

160% is for 72 of 45

8 0
3 years ago
) Make a scatter plot of mice survival rate (response) against aspartame concentration (explanatory) and add the regression line
Mashutka [201]

Answer & Step-by-step explanation:

Regression studies the relationship between independent / explanatory  (causal) variable, dependent / response (effected) variable. Scatter plot is a diagrammatic representation of regression.

Aspartame Concentration, being a toxic substance, is likely to have negative regression relationship with mice survival rate. It implies that higher concentration leads to lower mice survival, & lower concentration leads to higher mice survival.

The relationship can be strong or weak, depicted by 'r' magnitude, depending upon the intensity of concentration impact on survival. If more percent of the variation in survival rate can be explained by variations in  concentrations, regression coefficient is high. If less percent of the variation in  survival rate can be explained by variations in concentrations, regression coefficient is low

4 0
2 years ago
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