Whats 6x + 7 = 8x - 15

Answers

Answer 1

Answer: i am assuming you are trying to find x so x=11

Answer 2

Answer: here are the steps and answer 6x+7=8x−15Step 1: Subtract 8x from both sides.6x+7−8x=8x−15−8x−2x+7=−15

Step 2: Subtract 7 from both sides.−2x+7−7=−15−7−2x=−22

Step 3: Divide both sides by -2.−2x−2=−22−2x=11

Answer:x=11

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Karyn cuts the length of a ribbon into 4 equal pieces. each 1 1/4 feet long. How long was the ribbon?

Answers

5 feet. 1*4 is four and 1/4 * 4 is 1 added together that is 5

Answer: you add 1 1/4, 4 times which equals 4 4/4 or 5

Step-by-step explanation:

Bob tells mark he has 3 kids, the product of their ages is 72, this is not enough info so he gives the sum of the ages then finally say My youngest child called Justice. What is the ages of the kids?

Answers

72 divided by 3 is 24.But he has a youngest child so there not all the same age. the 2 older is 26 and the youngest is 20 it would still equal 72. JUST IN CASE ITS A TRICK QUESTION.Either way you could change it up if you want it to be younger just take away 2 number from the other to.

24 because if the sum is 72 you divide 72 by 3 and you get 24

In the diagram, what is the measures of angle 1?A.) 45°

B.) 135°

C.) 15°

D.) 125°

Answers

Answer:

The correct option is A.

Step-by-step explanation:

Line A and B are parallel lines.

$\angle 1=3x$ ....(1) (Alternate exterior angles)

$\angle 1+9x=180$ (Supplementary angles)

$3x+9x=180$

$12x=180$

$x=15$

The value of x is 15.

Put this value in equation (1).

$\angle 1=3* 15=45$

Therefore measures of angle 1 is 45° and option A is correct.

Answer:

45 i just took the test.

Step-by-step explanation:

Given the polynomial 2x3 + 18x2 − 18x − 162, what is the value of the coefficient 'k' in the factored form?2x3 + 18x2 − 18x − 162 = 2(x + k)(x − k)(x + 9)

k= ____________

Answers

If you would like to know the value of the coefficient 'k' in the factored form, you can find this using the following steps:

2x^3 + 18x^2 - 18x - 162 = 2 * (x^3 + 9x^2 - 9x - 81) = 2 * (x^2(x + 9) - 9(x + 9)) = 2 * ((x + 9) * (x^2 - 9)) = 2 * (x + 9) * (x - 3) * (x + 3) = 2 * (x + 3) * (x - 3) * (x + 9)

The correct result would be: k = 3.

Answer: THE ANSWER IS 3

Step-by-step explanation:

the environmental protection agency has determined that safe drinking water should contain no more than 1.3 milligrams per liter (mg/l) of copper, on average. to test water from a new source, you collect water in small bottles at each of 30 randomly selected locations. the mean copper content of your bottles is 1.36 mg/l and the standard deviation is 0.18 mg/l. you perform a test of

Answers

The EPA has set the safe drinking water limit for copper at 1.3 milligrams per liter (mg/L). In your sample, the mean copper content is 1.36 mg/L with a standard deviation of 0.18 mg/L from 30 randomly selected locations.

To determine if the new water source meets the EPA's standard, you should perform a hypothesis test using the provided sample data. The null hypothesis (H0) would be that the mean copper content is less than or equal to 1.3 mg/L, while the alternative hypothesis (H1) is that the mean copper content is greater than 1.3 mg/L.

With the given sample size, mean, and standard deviation, you can calculate the test statistic and compare it to a critical value to determine whether to accept or reject the null hypothesis. If the test statistic is greater than the critical value, you would reject the null hypothesis and conclude that the mean copper content of the new water source exceeds the EPA's safe limit.

It's important to remember that statistical tests can only provide evidence for or against a hypothesis, but cannot definitively prove that the new water source is safe or unsafe. Additional testing and monitoring would be necessary to make a well-informed decision about the safety of the water source.

To learn more about null hypothesis : brainly.com/question/28920252

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I HAVE 5 MATH QUESTIONS AND I NEED HELP ASAP. ONLY COMMENT IF YOU'RE GONNA HELP ME PLEASE. THANKS! QUESTIONS ARE PASTED BELOW.

Answers

1. (2,3)
2. (-1,-1)
3. infinitely many
4. coincident
5. consistent independent, coincident, inconsistent (in that order)

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