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3 years ago

What’s the value of X ?

Mathematics

1 answer:

Nat2105 [25]3 years ago

4 0

Answer:

x=25

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

(2x+2)+(5x+3)=180

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What is the area of this?

professor190 [17]

9 x 20 = 180
4(2x 2) = 16

180+16 = 196
answer
area of figure = 196

7 0

3 years ago

Find x in the parallelogram OA =(X+23) IN ; OC=31 in

ddd [48]

82 Europe dduuxhxxhhchcch

3 0

3 years ago

The Department of Transportation would like to test the hypothesis that the average age of cars on the road is less than 12 year

puteri [66]

Answer:

$z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29$

Step-by-step explanation:

information given

$\bar X=10.6$ represent the sample mean

$\sigma=4.1$ represent the population standard deviation

$n=45$ sample size

$\mu_o =12$ represent the value that we want to test

$\alpha=0.05$ represent the significance level for the hypothesis test.

z would represent the statistic

$p_v$ represent the p value for the test

Hypothesis to test

We want to test if the true mean is less than 12, the system of hypothesis would be:

Null hypothesis: $\mu \geq 10$

Alternative hypothesis: $\mu < 10$

The statistic is given by:

$z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}$ (1)

Replacing the info given we got:

We can replace in formula (1) the info given like this:

$z=\frac{10.6-12}{\frac{4.1}{\sqrt{45}}}=-2.29$

8 0

4 years ago

LITERAL EQUATIONS <br><br>K= AP/2 SOLVE FOR A

kvv77 [185]

$K=\frac{AP}{2}\ \ \ \ |Multiply\ by\ 2\\\\
2K=AP \ \ \ \ \ |Divide\ by\ P\\\\
\frac{2K}{P}=A\\\\Solution\ is\ A=\frac{2K}{P}.$

4 0

3 years ago

Twice a number x increased by 10 is 52

musickatia [10]

Answer:

x = 21

Step-by-step explanation:

the equation is 2x + 10 = 52

2x = 42

x = 21

4 0

3 years ago