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Sauron [17]
2 years ago
6

Write down the possible values of x

Mathematics
2 answers:
irinina [24]2 years ago
8 0

Answer:

-6, - 5 , -4

Step-by-step explanation:

Value of x should be greater than (-7) and less than or equal to (-4)

So, x = -6, -5, -4

worty [1.4K]2 years ago
7 0

Answer:

-6,

-5,

-4

that's all....

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The scale factor from the large triangle to the small triangle is 3:1 What is the length of side x of the smaller triangle?​
aleksley [76]

Answer:

10 i guess

cause

8*3=24

3*10=30

3 0
2 years ago
Read 2 more answers
Please help I’ll give brainiest!
Marizza181 [45]

Answer: h(3)= -4 h(-3)=-16

Step-by-step explanation:

Plug in 3 and -3 for x and solve

h(3)= 2(3)-10

h(-3)= 2(-3)-10

4 0
3 years ago
26(92' please someone tell me what this means
Sphinxa [80]
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2 years ago
What is 45% of 8.5 ?
satela [25.4K]

Answer:

3.825

Step-by-step explanation:

First, you have to move the decimal two over on 45%. If you move the decimal over two spaces to the right, it would be 0.45. In math, of means to multiply, so then you multiply 0.45 and 8.5 to get your answer of 3.825.

7 0
3 years ago
A sample of 38 observations is selected from one population with a population standard deviation of 3.4. The sample mean is 100.
kaheart [24]

Answer:

a. two-tailed test

b. reject H0 if Z>1.96 or Z<-1.96

c. Z = 1.73

d. we have failed to reject the null hypothesis

e. P-value = 0.0418

Step-by-step explanation:

We will use a Z test to resolve this, an it will be a two-tailed test because the hypothesis statements are not indicating a specific direction for the significant difference (H0 : μ1 = μ2 ; H1 : μ1 ≠ μ2), this also means that the significanclevel will be divided between the both tails (2.5% en each tail for the rejection regions). See attached drawing for reference.

We need to find our critical value:

Zα/2 = Z(0.05/2) = 0.025

If we look for 0.025 in a Z table we will find that the critical value is 1.96 to the right, and by symmetry -1.96 to the left. So our decision rule will be to reject H0 if Z>1.96 or Z<-1.96

The Z test will be done using the next equation:

Z = (x⁻1 - x⁻2) - (μ1 - μ2) / √( σ²1/n1 + σ²2/n2

Because we are testing the null hypothesis we know that μ1 - μ2 must be zero if they are supposed to be equal (H0 : μ1 = μ2), so we calculate as follows:

Z = (100.5 - 98.8) - (0) / √( (3.4)²/38 + (5.8)²/51 = 1.7/0.9817 = 1.73

Z<1.96, therefore we have failed to reject the null hypothesis

The P-value for this test would be represented by the probability of Z being greater than 1.73, so we can look for it in any Z table, finding that its value is 0.0418, and because P-value>0.025 we again confirm that we don't have evidence statistically significant to reject the null hypothesis

4 0
3 years ago
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