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antiseptic1488 [7]
4 years ago
10

Pleaseeeeeeee help me

Mathematics
1 answer:
lorasvet [3.4K]4 years ago
3 0

Answer:

by my best guess, x = -5 (negative five)

Step-by-step explanation:

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A giant tortoise travels at 0.17 miles per hour and an arctic hare travels at 37 miles per hour. If
irina1246 [14]

Answer:

3.145 Hours

Step-by-step explanation:

37÷2=18.5

18.5×.17=3.145

6 0
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Please help me with this question ​
Ivenika [448]

Step-by-step explanation:

42 people are male

34 people study biology

14 people are male and study biology

42/90 = 46.7% are male

34/90 = 37.8% study biology

14/90 =15.6% are male that study biology.

4 0
3 years ago
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nikklg [1K]
You add up all the sides

5 0
3 years ago
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Need help plzzzz!!!!
uysha [10]

Answer:

11a. 15x + 6

11b. x + 8 < 16 or x + 8 - 16

12. 3x + 15 + 5x = 8x + 15

13. 7x + 31

Step-by-step explanation:

5 0
3 years ago
Suppose you are testing the null hypothesis that a population mean is less than or equal to 46, against the alternative hypothes
Marizza181 [45]

Answer: 2.5

Step-by-step explanation:

Let \mu be the population mean .

Then, Null hypothesis : H_0:\mu\leq46

Alternative hypothesis :  H_1:\mu>46

We assume that this is a normal distribution.

Given : Sample size : n=25 , since the sample is small (n<30) so we cannot apply z-test . Thus the test is t-test.

Sample mean : \overline{x}=50

Population standard deviation : \sigma= 8

The test statistic for population mean is given by :-

t=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}

i.e. t=\dfrac{50-46}{\dfrac{8}{\sqrt{25}}}=2.5

Hence, the observed critical value = 2.5

7 0
3 years ago
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