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3 years ago

Simplify the expression using the order of operations. (10^2+ 5^2)/5 this one too im confused

Mathematics

2 answers:

lilavasa [31]3 years ago

8 0

Answer is your(mom) hope this helps

lara [203]3 years ago

4 0

Answer:

Step-by-step explanation:

Review: any operations inside parentheses must be done first. Inside these parentheses are two exponential functions: 10^2 and 5^2; these are equal to 100 and 25, and when we add them we get 125:

(125)/5

Now do the indicated division. We get 25

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What does R Equal? o: ( I love Thanking ppl XD ) Equation: 1/3r+1=−2/3r−2

Helga [31]

(1/3)r + (2/3)r = -2 -1
1r = -3
r = -3
Hope this helps

6 0

3 years ago

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Is x+y=6 a direct variation? Why or why not?

ivanzaharov [21]

I think the variation is x. because for have the y-intercept if yo move x

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3 years ago

Subtract the following fractions.

yanalaym [24]

Answer:

22. 3/8

23. 3/5

24. 0

Step-by-step explanation:

turn the 1 into a fraction for each of the problems.

for 22. it would be 8/8 because also trying to make the denominators the same.

8/8 - 5/8 = 3/8

try 23 and 24 now!

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3 years ago

Suppose a large shipment of laser printers contained 18% defectives. If a sample of size 340 is selected, what is the probabilit

Anestetic [448]

Answer:

The probability that the sample proportion will be greater than 13% is 0.99693.

Step-by-step explanation:

We are given that a large shipment of laser printers contained 18% defectives. A sample of size 340 is selected.

Let $\hat p$ = the sample proportion of defectives.

The z-score probability distribution for the sample proportion is given by;

Z = $\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n}} }$ ~ N(0,1)

where, p = population proportion of defective laser printers = 18%

n = sample size = 340

Now, the probability that the sample proportion will be greater than 13% is given by = P( $\hat p$ > 0.13)

P( $\hat p$ > 0.13) = P( $\frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n}} }$ > $\frac{0.13-0.18}{\sqrt{\frac{0.13(1-0.13)}{340}} }$ ) = P(Z > -2.74) = P(Z < 2.74)

= 0.99693

The above probability is calculated by looking at the value of x = 2.74 in the table which has an area of 0.99693.

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4 years ago

The product of 3 x is less than 9

ahrayia [7]

3x-9 would equal 3(x-3) because you factor the 3 out of the 9.

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3 years ago