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olganol [36]
3 years ago
15

Is 84 - 74 even or odd​

Mathematics
2 answers:
Andrews [41]3 years ago
8 0
Answer:
Even
Step-by-step explanation
quester [9]3 years ago
3 0

Answer:

even

Step-by-step explanation:

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An engineer designed a valve that will regulate water pressure on an automobile engine. The engineer designed the valve such tha
natita [175]

Answer:

Step-by-step explanation:

Given that:

Population Mean = 7.1

sample size = 24

Sample mean = 7.3

Standard deviation = 1.0

Level of significance = 0.025

The null hypothesis:

H_o: \mu = 7.1

The alternative hypothesis:

H_a: \mu > 7.1

This test is right-tailed.

degree \ of \  freedom=  n - 1 \\ \\ degree \  of \  freedom  =  24 - 1 \\ \\ degree \ of \  freedom   = 23

Rejection region: at ∝ = 0.025 and df of 23, the critical value of the right-tailed test t_c = 2.069

The test statistics can be computed as:

t = \dfrac{ \hat X - \mu_o}{\dfrac{s}{\sqrt{n}}}

t = \dfrac{ 7.3-7.1}{\dfrac{1}{\sqrt{24}}}

t = \dfrac{0.2}{0.204}

t = 0.980

Decision rule:

Since the calculated value of t is lesser than, i.e t = 0.980 < t_c = 2.069, then we do not reject the null hypothesis.

Conclusion:

We conclude that there is insufficient evidence to claim that the population mean is greater than 7.1 at 0.025 level of significance.

6 0
3 years ago
James says that since -5 is farther from zero on a number line than -4 is, then -5 &gt; -4. Use complete sentences to explain th
nikitadnepr [17]
-4 is less than -5 even though they are both on the same side of the number line. -4 is closer to zero.
7 0
3 years ago
Read 2 more answers
Mr Thompson plans to invest $7,500 in a savings account that earns 2.75% simple annual interest. If he makes no other deposits o
attashe74 [19]
Mr.Thompson's account will be worth $9,562.50 after 10 years.
3 0
2 years ago
What is the length of line segment PQ? If you can please explain, thanks.
nydimaria [60]

Given:

Tangent segment MN = 6

External segment NQ = 4

Secant segment NP =x + 4

To find:

The length of line segment PQ.

Solution:

Property of tangent and secant segment:

If a secant and a tangent intersect outside a circle, then the product of the secant segment and external segment is equal to the product of the tangent segment.

\Rightarrow NQ\times NP = MN^2

\Rightarrow 4\times (x+4) = 6^2

\Rightarrow 4x+16 = 36

Subtract 16 from both sides.

\Rightarrow 4x+16-16 = 36-16

\Rightarrow 4x =20

Divide by 4 on both sides.

$\Rightarrow\frac{4x}{4}=\frac{20}{4}

\Rightarrow x = 5

The length of line segment PQ is 5 units.

5 0
3 years ago
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Another one (last one!) it’s a test! Please no likes or something other than an answer!
Alex

Answer:

2, 6

Step-by-step explanation:

x always go first

8 0
2 years ago
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