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2 years ago

HELP ME FIGURE THIS OUT PLEASEEEE

Mathematics

1 answer:

serious [3.7K]2 years ago

6 0

Answer:

the answer is b because yeah also thats a translation not a rotation

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The radius of a circle is 2 m. Find the circumference to the nearest tenth.

Y_Kistochka [10]

Answer:

25.13 or 25.1

Step-by-step explanation:

2 x pi/3.14x4

6 0

2 years ago

If a snowball melts so that its surface area decreases at a rate of 3 cm2/min, find the rate (in cm/min) at which the diameter d

grin007 [14]

Answer:

The diameter decreases at a rate of 0.053 cm/min.

Step-by-step explanation:

Surface area of an snowball

The surface area of an snowball has the following equation:

$S_{a} = \pi d^2$

In which d is the diameter.

Implicit differentiation:

To solve this question, we differentiate the equation for the surface area implictly, in function of t. So

$\frac{dS_{a}}{dt} = 2d\pi\frac{dd}{dt}$

Surface area decreases at a rate of 3 cm2/min

This means that $\frac{dS_{a}}{dt} = -3$

Tind the rate (in cm/min) at which the diameter decreases when the diameter is 9 cm.

This is $\frac{dd}{dt}$ when $d = 9$ . So

$\frac{dS_{a}}{dt} = 2d\pi\frac{dd}{dt}$

$-3 = 2*9\pi\frac{dd}{dt}$

$\frac{dd}{dt} = -\frac{3}{18\pi}$

$\frac{dd}{dt} = -0.053$

The diameter decreases at a rate of 0.053 cm/min.

7 0

2 years ago

The sum of 3 consecutive odd #s is 51 what are the 3#s?

kari74 [83]

Answer: 15, 17, 19

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

What is the solution of the following system of linear equations? −21 + 15x = 6y −5x + 2y = −8 Select one: A. (15, -7) B. (4, 11

quester [9]

Answer:

C. No solution

Step-by-step explanation:

System of Equations:

A) $-21+15x=6y$

B) $-5x+2y=-8$

Simplifying and rearranging equation A.

Dividing each term by 3 (common factor for each term) in equation A.

$\frac{-21}{3}+\frac{15x}{3}=\frac{6y}{2}$

$-7+5x=2y$

Subtracting both sides by $2y$

$-7+5x-2y=2y-2y$

$-7+5x-2y=0$

Adding 7 both sides.

$-7+7+5x-2y=0+7$

$5x-2y=7$

Adding the above equation to equation B.

$5x-2y=7$

+ $-5x+2y=-8$

We have $0=-1$

which is not true.

Hence the system has no solution. (Answer)

3 0

2 years ago

Solve the inequality. 3/4x−2/3≤5/6 Choose the solution that is graphed on this number line.

Gemiola [76]

Answer:

<em>(when graphed, closed circle on two, shaded to the left)</em>

Step-by-step explanation:

3/4 x - 2/3 ≤ 5/6

Add 2/3 to both sides:

3/4x ≤ 5/6 + 2/3

3/4x ≤ 3/2

Divide by 3/4 on both sides:

x ≤ 3/2 ÷ 3/4

x ≤ 2

5 0

2 years ago