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3 years ago

2 to 10 by __ to get the ratio 4 to 20

Mathematics

1 answer:

Phantasy [73]3 years ago

8 0

Answer:

multiply by 2

Step-by-step explanation:

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For the graphed function f(x) = -(5)* - 3 + 2, calculate the average rate of change from x = 3 to x = 4.

Ilia_Sergeevich [38]

Answer:

-4

Step-by-step explanation:

The average rate of change from x=a to x=b of f(x) is $\frac{f(b)-f(a)}{b-a}$

The given function is $f(x)=-5^{x-3}+2$ .

$f(4)=-5^{4-3}+2=-3$ .

$f(4)=-5^{3-3}+2=1$ .

The average rate of change from x=3 to x=4 is given by:

$\frac{f(4)-f(3)}{4-3}$

$\frac{-3-1}{4-3}=-4$

7 0

3 years ago

Cadie is going to toss three coins simultaneously. What is the probability that exactly two of the coins will land on heads?

Contact [7]

For each coin, there are 2 outcomes, heads (H) or tails (T), so for the 3 coins, the number of outcomes are:

2 x 2 x 2 = 8 outcomes:

HHH / HHT / HTH / THH / TTT / TTH / THT / HTT

Out of all these outcomes, there are 3 ways, we get exactly 2 Heads:

HHT / HTH / THH

So, the probability of exactly 2 coins landing on Heads is 3/8, or 0.375

4 0

3 years ago

Find the area of the following triangle. Show each of the math steps that you use to find the area. Then explain how to go about

Aleksandr [31]

Right angled triangle

Base=B=2.4cm
Height=H=1.8cm

Area:-

$\\ \rm\rightarrowtail \dfrac{1}{2}BH$

$\\ \rm\rightarrowtail \dfrac{1}{2}(2.4)(1.8)$

$\\ \rm\rightarrowtail 1.2(1.8)$

$\\ \rm\rightarrowtail 2.16cm^2$

4 0

2 years ago

What is the Smallest numbers : p = x^2 + 2x +2 / x+1 (x>-1) t= 1/x + 4/1-x (0

OverLord2011 [107]

Answer:

I exactly don't know the answer

5 0

2 years ago

Mateo scored in the 55th percentile of his class on the latest math exam. What does this mean in relation to the data set, and w

Mila [183]

Answer:

d. Mateo scored as well as or better than 55% of his classmates, with a score of 82.

Step-by-step explanation:

Mateo scored in the 55th percentile of his class on the latest math exam. What does this mean in relation to the data set and what did he score on the exam?

{35, 42, 55, 68, 69, 72, 72, 77, 78, 78, 82, 85, 87, 88, 90, 93, 94, 96, 96, 99)

a. Mateo scored a 55% on his exam.
b. Mateo scored as well as or better than 55% of his classmates, with a score of 78.
c. Mateo scored worse than 55% of his classmates, with a score of 78.
d. Mateo scored as well as or better than 55% of his classmates, with a score of 82.
e. Mateo scored worse than 55% of his classmates, with a score of 82.

<h3>Solution</h3>

There are scores of 20 students. Each score is equivalent of 100%/20 = 5%

The easy way to understand Mateo' s place is to compare scores against 5% slots.

See attached.

We can also get the average score

Sum

∑ {35, 42, 55, 68, 69, 72, 72, 77, 78, 78, 82, 85, 87, 88, 90, 93, 94, 96, 96, 99) = 1556

Average or mean score:

1556/20 = 77.8

This is matching the 50% score.

As we see Mateo scored 82 which is matching 55%.

Correct option is d.

3 0

4 years ago