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MAVERICK [17]
2 years ago
7

Help!!!! please!!!!!

Mathematics
1 answer:
mafiozo [28]2 years ago
6 0
I think the answers are the last two. that is what i found while doing this problem
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Given h(x) = 4x – 5, solve for a when h(x) = 7.
Elenna [48]

h(x)=4x-5

\\ \sf\longmapsto h(7)

\\ \sf\longmapsto 4(7)-5

\\ \sf\longmapsto 28-5

\\ \sf\longmapsto 23

3 0
3 years ago
Read 2 more answers
The function f(x)= (x-8) (x+2) (x+3) has which zeros
ArbitrLikvidat [17]

Answer:

(8, 0)

(-2, 0)

(-3, 0)

Step-by-step explanation:

x - 8 = 0

x = 8

x + 2 = 0

x = -2

x + 3 = 0

x = -3

4 0
2 years ago
Read 2 more answers
An engineer is comparing voltages for two types of batteries (K and Q) using a sample of 75 type K batteries and a sample of 46
lorasvet [3.4K]

The decision rule for rejecting the null hypothesis, considering the t-distribution, is of:

  • |t| < 1.9801 -> do not reject the null hypothesis.
  • |t| > 1.9801 -> reject the null hypothesis.

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, it is tested if there is not enough evidence to conclude that the mean voltage for these two types of batteries is different, that is, the subtraction of the sample means is of zero, hence:

H_0: \mu_1 - \mu_2 = 0

At the alternative hypothesis, it is tested if there is enough evidence to conclude that the mean voltage for these two types of batteries is different, that is, the subtraction of the sample means different of zero, hence:

H_1: \mu_1 - \mu_2 \neq 0

We have a two-tailed test, as we are testing if the mean is different of a value.

Considering the significance level of 0.05, with 75 + 46 - 2 = 119 df, the critical value for the test is given as follows:

|t| = 1.9801.

Hence the decision rule is:

  • |t| < 1.9801 -> do not reject the null hypothesis.
  • |t| > 1.9801 -> reject the null hypothesis.

More can be learned about the t-distribution in the test of an hypothesis at brainly.com/question/13873630

#SPJ1

3 0
1 year ago
Can someone help me find surface area??
natita [175]

Answer:

277cm²

Step-by-step explanation:

Base = 9x8=72

There are 2 triangles with a bottom edge of 9 and a slant height of 13:

1/2(9)(13)=58.5

There are 2 triangles with a bottom edge of 8 and a slant height of 11:

1/2(8)(11)=44

72+58.5+58.5+44+44=277cm²

5 0
3 years ago
Does (1, 4) make the inequality 4x + 2y = 16 true
Fiesta28 [93]

Answer:

no it is false.

Step-by-step explanation:

Because The left side 12 does not equal to the right side 16, which means that the given statement is false.

4 0
3 years ago
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