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3 years ago

HELPP URGENTT 20 POINTS

Mathematics

2 answers:

balu736 [363]3 years ago

6 0

Answer:C

Step-by-step explanation:

o-na [289]3 years ago

5 0

Answer:

luv

Step-by-step explanation:

sorry

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Which equation represents seven times a number decreased by 2 is 19? A) 7 + x - 2 = 19 B) 7x + 2 = 19 C) 2x - 7 = 19 D)

Helen [10]

Answer:

7n - 2 = 19

Step-by-step explanation:

7 times a number is 7n.

7 times a number, decreased by 2, is 7n - 2.

7 times a number, decreased by 2, is 19 is represented by 7n - 2 = 19

4 0

3 years ago

Find x. to 150 X = Alternate interior angles

eimsori [14]

Answer: 75 degrees

Step-by-step explanation: supplementary angles= 180 degrees, 180 - 115 = 75

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2 years ago

What is the answer to 5/13t=-9

OLga [1]

I found out that t = 117 over 5

3 0

3 years ago

The measure of arc RPQ is...

Oliga [24]

Answer:

171 degrees

Step-by-step explanation:

If angle POS is 39 degrees, then the measure of arc PS is 39 degrees

You can apply this to arc SQ and QR

So:

39+90+42= measure of arc RPQ

171 degrees= measure of arc RPQ

6 0

3 years ago

The time it takes me to wash the dishes is uniformly distributed between 10 minutes and 15 minutes. What is the probability that

mario62 [17]

Answer:

The probability that washing dishes tonight will take me between 12 and 14 minutes is 0.1333.

Step-by-step explanation:

Let the random variable X represent the time it takes to wash the dishes.

The random variable X is uniformly distributed with parameters a = 10 minutes and b = 15 minutes.

The probability density function of X is as follows:

$f_{X}(x)=\frac{1}{b-a};\ a$

Compute the probability that washing dishes will take between 12 and 14 minutes as follows:

$P(12\leq X\leq 14)=\int\limits^{12}_{14} {\frac{1}{15-10} \, dx$

$=\frac{1}{5}\int\limits^{12}_{14} {1} \, dx \\\\=\frac{1}{5}\times [x]^{14}_{12}\\\\=\frac{1}{15}\times [14-12]\\\\=\frac{2}{15}\\\\=0.1333$

Thus, the probability that washing dishes tonight will take me between 12 and 14 minutes is 0.1333.

5 0

3 years ago