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masha68 [24]
3 years ago
10

What is the solution for -10 < x - 9?

Mathematics
1 answer:
ikadub [295]3 years ago
6 0
ANSWER:

x > - 1

STEP-BY-STEP EXPLANATION:

- 10 < x - 9

x - 9 > - 10

x > - 10 + 9

x > - 1
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A Delivery service charges $25 per pound for making a delivery. If there is an additional 8% sales tax, what is the cost of deli
mafiozo [28]

The cost of delivering an item that weighs 4/5 of a pound?$21.60.  

<h3>How to find the delivery cost?</h3>

Let x = the number of pounds

Thus, we can say that;

Cost = 25x * 1.08

Since we want to find the cost of delivering an item that weighs 4/5 of a pound, the we will put 4/5 for x to get;

Cost = (25 * 4/5) * 1.08

Cost = 20 * 1.08

Cost = 21.6

The delivery cost would be $21.60.  

Read more about Delivery Cost at; brainly.com/question/24870596

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5 0
1 year ago
Researchers fed mice a specific amount of Toxaphene, a poisonous pesticide, and studied their nervous systems to find out why To
Mkey [24]

Answer:

a. The mean refractory period= 1.85 and the standard error = 0.06455

b.  90% confidence interval for the mean absolute refractory period for all mice when subjected to the same treatment = 1.6981, 2.0019

c. Yes, the data give good evidence to support this theory

Step-by-step explanation:

a.  The table below shows the calculations:

                 X                (X-mean)^2

                1.7             0.0225

                1.8                 0.0025

                1.9                 0.0025

                2.0                 0.0225

Total        7.4                  0.05

Sample size: n=4

The mean is:  \bar{x} = \frac{7.4}{4} = 1.85

The sample standard deviation, s = \sqrt{\frac{\sum \left ( x-\bar{x} \right )^{2}}{n-1}}=0.1291

The standard error, se= \frac{s}{\sqrt{n}}=\frac{0.1291}{2} = 0.06455

b. Degree of freedom: df = n-1 = 3

Critical value of t for 90% confidence interval is: 2.3534

The confidence interval is  \bar{x}\pm t_{c}se = 1.85\pm 2.3534\cdot 0.06455=1.85\pm 0.1519 = (1.6981, 2.0019)

c. The Hypotheses are:

H_{0}:\mu=1.3,H_{1}:\mu>1.3

So the test statistics will be

t=\frac{\bar{x}-\mu}{s/\sqrt{n}}=8.52

The p-value is: 0.0017

We reject the null hypothesis because p-value is less than 0.05 . This indicates that the data gave good evidence to support this theory.

4 0
3 years ago
PLEASE HELP ILL GIVE BRAINLIEST IF THE ANSWERS CORRECT
pickupchik [31]
The answer is 4 1/2 (four and a half).
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2 years ago
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A submarine at -28 feet dives 40 feet. what is the submarine's elevation after the dive
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The submarine is 68 feet below sea level, which is -68
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3 years ago
Please help me fast <br> You don’t need to explain just send the answer
Andrej [43]

Answer:

70.5 it is the answer. I hope I am helpful please mark brainlist

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