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2 years ago

Please I need help I will give brainliest

Mathematics

2 answers:

Inga [223]2 years ago

7 0

Answer:

20% = 10% + 10%

75% = 25% + 25% + 25%

35% = 10% + 25%

60% = 50% + 10%

Step-by-step explanation:

Naily [24]2 years ago

5 0

Answer:

60=50+10

35=10+25

20=10+10

75=25+25+25

Step-by-step explanation:

hope this helps!

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Circle A has a radius of 9 centimeters and Circle B has a diameter of 19 centimeters. What is the relationship between the circu

IRISSAK [1]

Answer:

18:19

Step-by-step explanation:

Given that,

The radius of circle A = 9 cm

The diameter of circle B = 19 cm

We know that,

Radius = diameter/2

The radius of circle B = 19/2 cm

The circumference of circle A is :

$C_A=2\pi r_A$ ....(1)

And that of circle B is :

$C_B=2\pi r_B$ ....(2)

Dividing equation (1) and (2) :

$\dfrac{C_A}{C_B}=\dfrac{2\pi r_A}{2\pi r_B}\\\\=\dfrac{r_A}{r_B}\\\\=\dfrac{9}{\dfrac{19}{2}}\\\\\dfrac{C_A}{C_B}=\dfrac{18}{19}$

Hence, the ratio of circumferences of Circle A and Circle B is 18:19.

7 0

3 years ago

Which is equivalent to i^3? A) -1 B) 1 C) 0 D) i E) -i

Amanda [17]

Answer:

E) $-i$

Step-by-step explanation:

Extended Information on the Complex Number System

$\sqrt{-1} = i \\ -1 = {i}^{2} \\ -i = {i}^{3} \\ 1 = {i}^{4}$

I am joyous to assist you anytime.

5 0

3 years ago

Please help me thank you

telo118 [61]

The answer is ...

Parallel

7 0

3 years ago

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The world population was 2560 million people in 1950 and 3040 million in 1960 and can be modeled by the function p(t) 2560e0.017

almond37 [142]

Answer:

Step-by-step explanation:

The average rate of change is the slope. However, since this is not a linear function but an exponential one, we cannot determine the slope of the function, only the slope of the secant line that connects the x-values of 4 and 8. In order to do that we need to find the corresponding y-coordinate that goes with each of those x-values and plug them into the slope function. What we will get is a very loose interpretation of the rate of change of population, but that's all we have short of using calculus. It would be a closer estimation if we looked at x values of 4 and 5, or eve 4 ad 4.5. But that's not what we're being asked. So let's get to it.

Sub first 4 in for x and then 8, to get each y value:

$P(4)=2560e^{(.017185)(4)}$ to get that P(4) = 2742.16