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3 years ago

My table is 123 $ it is 20% discount so what is original price

Mathematics

1 answer:

Svet_ta [14]3 years ago

6 0

What you do is take the 123 and divide by 0.20 and you get 615.To check it just multiple 615 by 0.20 and you get 123

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Write the absolute value inequality in the form |x-b| c that has the solution set x<-5 or x>7.

Daniel [21]

Answer:
|x - 1| > 6
Step-by-step explanation:
b is the centre:
(-5 + 7)/2
2/2 = 1
b = 1
c is the distance from the centre
c = 7 - 1 = 6
Since it's an or case, > with the modulus
|x - 1| > 6

4 0

3 years ago

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

Decimal form of 45÷120

hram777 [196]

Answer:

0.375

Step-by-step explanation:

go on google and search up "45 divided by 120" then you should have your answer lol

8 0

3 years ago

Find the x value of x. If necessary round to the nearest tenth. A=49sq.in.

grigory [225]

Answer:

$9.9 ~in$ ✔︎

Step-by-step explanation:

$A=1/2 ~ base * height$

$49=1/2(x)(c)$

$98=x^2$

$x=\sqrt{98}$

$x=7\sqrt{2}$

$x=9.9$

༄❁༄❁༄❁༄❁༄

hope it helps...

have a great day!!

4 0

3 years ago

Write the first three multiples of each number 6,11,14

hoa [83]

6,12,24,30,36,42,

11,22,33,44,55,66

14,28,42,56,70,84

7 0

3 years ago