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Furkat [3]
3 years ago
12

What is the value of the expression(25 - 7) X 2 + 4 + 2?​

Mathematics
2 answers:
MissTica3 years ago
4 0

Answer:42

Step-by-step explanation:

Mnenie [13.5K]3 years ago
4 0

Answer: 42.

Step-by-step explanation:

First, you identify what method you need to use for solving this problem. I used Pemdas. Pemdas is the steps to take for most equations. Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction.

You do the parenthesis part of the equation first. 25-7= 18.

Next, following the order of Pemdas, you multiply the answer you just got from the parenthesis by 2. 18x2= 36.

Then, you add 4 to the answer to the last step. 36+4= 40.

Lastly, you add 2 to the answer from the last step. 40+2= 42.

I hope this benefits you. Good luck!

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Write the equation of the line in slope intercept form Slope=-4 Point=(2,-4)
Andrei [34K]

Answer:

y=2x-8

or

f(x)=2x-8

Step-by-step explanation:

To write in slope-intercept form using this information, first use the point slope formula.

y-y1=m(x-x1)

m is slope.

y+4=2(x-2)

Use distributive property on the right side.

y+4=2x-4

Now, subtract 4 from both sides.

y+4-4=2x-4-4

y=2x-8

Written using function notation:

f(x)=2x-8

Hope this helps!

If not, I am sorry.

5 0
2 years ago
Read 2 more answers
How do I convert 216 in percentage
AveGali [126]

Answer: 21600

216 as a percentage of certain number x can be calculated by dividing 216 by x, and multiplying the result by 100. For example, 216 as a percentage of 10 = (216 / 10) x 100% = 2160%.

Step-by-step explanation:

6 0
2 years ago
If a polygon has eight sides then it is an octagon. True or False
Mama L [17]
This is true because octa- means 8
7 0
3 years ago
What is 4567876543345678765434678976543456876543*7576575675675*09*6865676*0*565545552651273652135*5272526*62526535*526242534546*
KatRina [158]
<span>4567876543345678765434678976543456876543*7576575675675*09*6865676*0*565545552651273652135*5272526*62526535*526242534546*786743165461354*653654264*751*1*5*7562756565464654+10 =  10


it took me awhile but that's what i got.

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</span>
7 0
3 years ago
Read 2 more answers
Consider the following hypothesis test. : : The following results are for two independent samples taken from two populations. Ex
I am Lyosha [343]

Answer:

z = -1.53 --- test statistic

p = 0.1260 --- p value

Conclusion: Fail to reject the null hypothesis.

Step-by-step explanation:

Given

n_1 = 80     \bar x_1= 104   \sigma_1 = 8.4

n_2 = 70    \bar x_2 = 106    \sigma_2 = 7.6

H_o: \mu_1 - \mu_2 = 0 --- Null hypothesis

H_a: \mu_1 - \mu_2 \ne 0 ---- Alternate hypothesis

\alpha = 0.05

Solving (a): The test statistic

This is calculated as:

z = \frac{\bar x_1 - \bar x_2}{\sqrt{\frac{\sigma_1^2}{n_1} + \frac{\sigma_2^2}{n_2} }}

So, we have:

z = \frac{104 - 106}{\sqrt{\frac{8.4^2}{80} + \frac{7.6^2}{70} }}

z = \frac{104 - 106}{\sqrt{\frac{70.56}{80} + \frac{57.76}{70}}}

z = \frac{-2}{\sqrt{0.8820 + 0.8251}}

z = \frac{-2}{\sqrt{1.7071}}

z = \frac{-2}{1.3066}

z = -1.53

Solving (b): The p value

This is calculated as:

p = 2 * P(Z < z)

So, we have:

p = 2 * P(Z < -1.53)

Look up the z probability in the z score table. So, the expression becomes

p = 2 * 0.0630

p = 0.1260

Solving (c): With \alpha = 0.05, what is the conclusion based on the p value

We have:

\alpha = 0.05

In (b), we have:

p = 0.1260

By comparison:

p > \alpha

i.e.

0.1260 > 0.05

So, we fail to reject the null hypothesis.

4 0
3 years ago
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