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adelina 88 [10]
2 years ago
8

Help pleaseeeeeeeeeeeeee

Mathematics
1 answer:
barxatty [35]2 years ago
5 0

Answer:

a

Step-by-step explanation:

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Combine like terms in the expression below:<br> 9x + 4.05xy + 15y + 30y - 11x + 9.46
aev [14]

Answer: 4.05 x y  − 2 x  +  45 y  +  9.46

Step-by-step explanation:

9x + 4.05xy + 15y + 30y - 11x + 9.46

4.05xy + 9x - 11x  + 15y+ 30y+ 9.46

4.05 x y  − 2 x  +  45 y  +  9.46

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2 years ago
A machine in a shoe factory produces shoelaces. The number of shoelaces it produces is proportional to the time. It can produce
larisa86 [58]

Answer:

12 * 3x

Step-by-step explanation:

x is equal to the minutes

7 0
2 years ago
Evaluate the expression when x =19 and y =7
PtichkaEL [24]

Answer:

Plug in X and Y by replacing the given numbers where you see letters.

Step-by-step explanation:

What I said above.

3 0
2 years ago
Consider the probability that more than 99 out of 157 software users will not call technical support. Assume the probability tha
Rainbow [258]

Answer:

P(x>99)= 0.468

Step-by-step explanation:

From the question we are told that:

Sample size 157

Sample mean

\=x =np

\=x =157*0.56

\=x = 87.92

Generally the equation for Standard deviation is mathematically given by

\sigma=\sqrt{npq}

\sigma=\sqrt{157*0.56*0.44}

\sigma =6.22

Therefore

P(x>99)=P(z>(\frac{99.5-87.92)}{6.22})

P(x>99)=P(z>1.86)

P(x>99)= 0.468

8 0
2 years ago
What is $7.50 admission; 20% off; 5.75% tax
Dvinal [7]

Hello, the answer you are looking for is $6.35. To get the answer, first do 7.50 divided by 5, is 1.50 off the admission that is 20% off then $7.50-1.50= $6 then you do 6 divided by 100= 0.06 x 5.75 % tax you add together total will be $6.35 the answer.

I hope  you understand the steps I explain.

4 0
3 years ago
Read 2 more answers
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