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Ksivusya [100]
3 years ago
5

How would you solve a inequality like: 15-13(2x+6)< 15-3(6x-7)

Mathematics
2 answers:
Marina86 [1]3 years ago
7 0
Hello!

You can solve this algebraically

15 - 13(2x + 6) < 15 - 3(6x - 7)

Subtract 15 from both sides

-13(2x + 6) < -3(6x - 7)

Distribute the -13

-26x + -78 < -3(6x - 7)

Distribute the -2

-26x - 78 < -18x + 21

Add 18x to both sides

-8x - 78 < 21

Add 78 to both sides

-8x < 99

Divide both sides by -8

x < -12.375

The answer is -12.375

Hope this helps!
Arturiano [62]3 years ago
3 0
<span>15 - 13(2x + 6) < 15 - 3(6x - 7)
15 - 26x - 78 < 15 - 18x + 21
-26x -63 < -18x + 36
-8x < 99
   x > -99/8
or
   x > - 12.375

</span>
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Eli sells refrigerators. His base salary is $250 per week, and his commission is $50 for each refrigerator (r) that he sells. He
Mekhanik [1.2K]

Answer:

C and e

Step-by-step explanation:

the 50r represents the commision he receives for each refrigerator he sells, and the 250 is the base salary and it’s bigger than, >, because he needs to earn MORE than 900 and you get D by solving the inequality,  50r >900, r>15

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5 0
3 years ago
Estimate the product of 126.12 and 2.2.
kifflom [539]
Product means the answer/result to a multiplication problem

Estimate means to form an approximation/ rough guess

126.12 x 2.2 = 277.464

This answer, 277.464, is the exact product

Its wanting us to find the estimate (there could be possible estimates, depending on what the instructions is asking for):

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6 0
3 years ago
Luisa recieved $108 for a necklace she sold on an online auction. The auction site took a fe of 10% of selling price. What was t
Vera_Pavlovna [14]
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3 0
2 years ago
A one-tailed test is a a. hypothesis test in which rejection region is in one tail of the sampling distribution b. hypothesis te
garri49 [273]

Answer:

Option A) One tailed test is a hypothesis test in which rejection region is in one tail of the sampling distribution

Step-by-step explanation:

One Tailed Test:

  • A one tailed test is a test that have hypothesis of the form

H_0: \bar{x} = \mu\\H_A: \bar{x} < \mu\text{ or } \bar{x} > \mu

  • A one-tailed test is a hypothesis test that help us to test whether the sample mean would be higher or lower than the population mean.
  • Rejection region is the area for which the null hypothesis is rejected.
  • If we perform right tailed hypothesis that is the upper tail hypothesis then the rejection region lies in the right tail after the critical value.
  • If we perform left tailed hypothesis that is the lower tail hypothesis then the rejection region lies in the left tail after the critical value.

Thus, for one tailed test,

Option A) One tailed test is a hypothesis test in which rejection region is in one tail of the sampling distribution

6 0
2 years ago
Find the average rate of change of f(x)=2x^2-7x from x=2 to x=6
scoundrel [369]

Answer:

Step-by-step explanation:

The average rate of change of a function f between a and b (a< b) is :

R =[f(b)-f(a)] ÷ (a-b)

●●●●●●●●●●●●●●●●●●●●●●●●

Let R be the average rate of change of this function

f(6) = 2×6^2 - 7×6 = 72-42 = 30

f(2) = 2×2^2 - 7×2 = 8-14 = -6

R = [f(6) - f(2)]÷ (6-2)

R = [30-(-6)] ÷ 4

R = -36/4

R = -9

■■■■■■■■■■■■■■■■■■■■■■■■■

The average rate of change of this function is -9

8 0
3 years ago
Read 2 more answers
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