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TEA [102]
2 years ago
7

HELP ME OUT PLS!!!!!​

Mathematics
1 answer:
miskamm [114]2 years ago
5 0

Answer:

x = 26

Step-by-step explanation:

Supplementary angles mean that when the two angles are added together, they add up to 180. With this info, we can set the two expressions equal to 180

124 + (2x + 4) = 180.    

128 + 2x = 180    combine like terms

2x = 52      subtract both sides by 128

x = 26.      divide both sides by 2

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Nick paid 2.94 in sales tax on an item that cost $42.00 at the rate how much he pay in sales tax on an item that cost $58.00 bef
ruslelena [56]
$2.93/$42= about 7% tax
$58*7%= $<span>4.06 in tax</span>
4 0
3 years ago
Consider the hypotheses below. Upper H 0​: mu equals 50 Upper H 1​: mu not equals 50 Given that x overbar equals 60​, s equals 1
Neko [114]

Answer:

We conclude that  \mu\neq 50.

Step-by-step explanation:

We are given that x bar = 60​, s = 12​, n = 30​, and alpha = 0.10

Also, Null Hypothesis, H_0 : \mu = 50

Alternate Hypothesis, H_1 : \mu \neq 50

The test statistics we will use here is;

                    T.S. = \frac{Xbar-\mu}{\frac{s}{\sqrt{n} } } ~  t_n_-_1

where, X bar = sample mean = 60

              s = sample standard deviation = 12

              n = sample size = 30

So, Test statistics = \frac{60-50}{\frac{12}{\sqrt{30} } } ~ t_2_9

                             = 4.564

At 10% significance level, t table gives critical value of 1.311 at 29 degree of freedom. Since our test statistics is more than the critical value as 4.564 > 1.311 so we have sufficient evidence to reject null hypothesis as our test statistics will fall in the rejection region.

P-value is given by, P(t_2_9 > 4.564) = less than 0.05% {using t table}

Here also, P-value is less than the significance level as 0.05% < 10% , so we will reject null hypothesis.

Therefore, we conclude that \mu\neq 50.

7 0
3 years ago
a plane traveled 5185 miles with the wind in 8.5 hours and 4845 miles against the wind in the same amount of time. find the spee
Artyom0805 [142]

You can use scale to solve. 5185/8.5=610

4845/610= about 8 hours.

6 0
3 years ago
Select the correct answer. What is the solution to this equation? -10 + (x) = -4 A. x = -9 or x = 4 B. X = 9 or x = 21 c. x=-9 o
Bogdan [553]

Answer:

The solution isn't listed

Step-by-step explanation:

x = 6 because you add -10 to -4 and you get 6

7 0
2 years ago
Please help ASAP this was due awhile ago and I’m about to get a zero
jok3333 [9.3K]

Answer:

2 cups of blueberry

Step-by-step explanation:

8/4=2

3 0
2 years ago
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