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Olin [163]
3 years ago
10

For her house-painting job, Erica can be paid in one of two way:

Mathematics
1 answer:
Igoryamba3 years ago
6 0

Answer:

plan B would be best if x is greater than or equal to 26

Step-by-step explanation:

250 + 10x = 20x

250 = 10x

25 = x

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Y=-2x+5<br> X | Y<br> ____<br> 5<br> -1<br> 2<br> 0
Y_Kistochka [10]

Answers:

<h3>1. -5</h3><h3>2. 7</h3><h3>3. 1</h3><h3>4. 5</h3>

Step-by-step explanation:

Plug in the x into the equation and solve.

<h3>Value 1: X = 5</h3>

Y = -2(5) + 5

Y = -10 + 5

Y = -5

<h3>Value 2: X = -1</h3>

Y = -2(-1) + 5

Y = 2 + 5

Y = 7

<h3>Value 3: X = 2</h3>

Y = -2(2) + 5

Y = -4 + 5

Y = 1

<h3>Value 4: X = 0</h3>

Y = -2(0) + 5

Y = 0 + 5

Y = 5

I'm always happy to help :)

8 0
2 years ago
A map has a scale of 1 inch = 3 miles. Which of the following scales is equivalent?
tankabanditka [31]
12 inch=36 miles because if you multiply 11 x 3 you get 36 miles.
3 0
2 years ago
Read 2 more answers
Write two linear expressions that have a sum of 3x-8
irakobra [83]
1. (5x + 2 )
2. ( -2x -10 ) 
5 0
3 years ago
Read 2 more answers
In Quebec, 90 percent of the population subscribes to the Roman Catholic religion. In a random sample of eight Quebecois, find t
AysviL [449]

Answer:

Probability that the sample contains at least five Roman Catholics = 0.995 .

Step-by-step explanation:

We are given that In Quebec, 90 percent of the population subscribes to the Roman Catholic religion.

The Binomial distribution probability is given by;

 P(X = r) = \binom{n}{r}p^{r}(1-p)^{n-r} for x = 0,1,2,3,.......

Here, n = number of trials which is 8 in our case

         r = no. of success which is at least 5 in our case

         p = probability of success which is probability of Roman Catholic of

                 0.90 in our case

So, P(X >= 5) = P(X = 5) + P(X = 6) + P(X = 7) + P(X = 8)

= \binom{8}{5}0.9^{5}(1-0.9)^{8-5} + \binom{8}{6}0.9^{6}(1-0.9)^{8-6} + \binom{8}{7}0.9^{7}(1-0.9)^{8-7} + \binom{8}{8}0.9^{8}(1-0.9)^{8-8}

= 56 * 0.9^{5} * (0.1)^{3} + 28 * 0.9^{6} * (0.1)^{2} + 8 * 0.9^{7} * (0.1)^{1} + 1 * 0.9^{8}

= 0.995

Therefore, probability that the sample contains at least five Roman Catholics is 0.995.

3 0
3 years ago
A cosmetics company decides to compare its new nail polish product, Bella, with three other nail polish brands: Primrose, Shine,
raketka [301]
Answer=B
The explanatory variable is another term for the independent variable. The independent variable is the 'thing' that YOU decide to change/manipulate in an experiment. The type of nail polish given was the independent variable for this experiment. 
8 0
3 years ago
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