All categories

3 years ago

Please I really need help on this one

Mathematics

2 answers:

kondaur [170]3 years ago

7 0

Answer:

$r = \frac{d}{2} \\ r = \frac{5}{2} \\ r = 2.5cm$

Dima020 [189]3 years ago

3 0

Radius: 2.5 centimeters

You might be interested in

The correlation between a car’s engine size and its fuel economy (in mpg) is r = - 0.774.

fgiga [73]

Answer: 59.91%.

Step-by-step explanation:

We know that the fraction of the variability in data values accounted by a model is given by $r^2$ , where r is the coefficient of correlation.

We are given , that the correlation between a car’s engine size and its fuel economy (in mpg) is r = - 0.774.

Then, the fraction of the variability in fuel economy is accounted for by the engine size would be $r^2=( - 0.774)^2=0.599076\approx59.91\%$

[Multiply 100 to convert a decimal into percent]

Hence, the fraction of the variability in fuel economy is accounted for by the engine size is 59.91%.

None of the options are correct.

5 0

4 years ago

What is the average rate of change from 0 to 2 of f(x)=x^3-x+4

Kay [80]

$\mathbf{Task.} ~ \mathrm{What~is~the~average~rate~of~change~from~0~to~2~of~} f(x) = x^{3} - x + 4?$

$\mathrm{The~average~rate~} \upsilon ~ \mathrm{of~change~of~the~function~} f(x) ~ \mathrm{over~the~interval~} [x_{1}; \ x_{2}]\\\mathrm{can~be ~ found~on~the~formula \colon}$

$\boxed{\upsilon = \dfrac{\Delta f}{\Delta x} = \dfrac{f(x_{2}) - f(x_{1})}{x_{2} - x_{1}} }$

$\mathrm{For~the~function,} ~ f(x) = x^{3} - x + 4 ~ \mathrm{the~average~rate~of~change~over~the~interval}\\\mathrm{from~0~to~2 \colon}$

$f(0) = 0^{3} -0 + 4 = 4;$

$f(2) = 2^{3} - 2 + 4 = 8 + 2 = 10;$

$\Delta f = 10 - 4 = 6;$

$\Delta x = 2 - 0 = 2.$

$\upsilon = \dfrac{6}{2} = 3.$

$Answer \colon 3~\blacktriangle$

3 0

3 years ago

Divde 3/4÷5/7 what was the error 5/7÷3/4=5/7*4/3=20/21

Dmitriy789 [7]

he change 3/4 instead of 5/7

3 0

3 years ago

Need help ASAPPPPPPP

patriot [66]

Answer:

8 is the correct answer because coefficient lies before Exponent. Exponent is variable

So 8 is the coefficient.

5 0

3 years ago

ABC is translated 4 unite to the loft and 8 unito up, thon roflooted

gayaneshka [121]

Answer:

(-3, 13)

Step-by-step explanation:

Coordinate of A is (7,5)

4 units to the left means (7-4, 5) --> (3,5)

8 units up means (3, 5+8) --> (3,13)

Reflected across the y-axis means that the sign of whatever x coordinate you have now will be reversed.

So (-3,13)

3 0

3 years ago