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3 years ago

4(2x-1) x=5 solve the problem

Mathematics

2 answers:

Nimfa-mama [501]3 years ago

7 0

Step-by-step explanation:

4(2x-1) ,x=5

4(2(5)-1)

4(10-1)

4(9)

hope it's helpful ❤❤❤❤❤❤

THANK YOU.

creativ13 [48]3 years ago

6 0

Answer:

Step-by-step explanation:

when you plug 5 into this equation you get 36!

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Suppose that scores on a knowledge test are normally distributed with a mean of 60 anda standard deviation of 4.3. Scores on an

Iteru [2.4K]

The Z-score for Boris is 1.627, and the Z-score value for the Callie is 1.267, Boris scored higher relatively.

The Z test is a parametric procedure that is used on data that is dispersed in a normal fashion. For testing hypotheses, the z test can be used on one sample, two samples, or proportions. When the population variance is known, it analyzes if the means of two big groups are dissimilar.

We know the formula for the Z-test:

$\rm Z = \dfrac{X-\mu}{\sigma}$

(a) For Boris:

$\rm Z = \dfrac{67-60}{4.3}$

Z = 1.627

(b) For Callie:

$\rm Z = \dfrac{119-110}{7.1}$

Z = 1.267

(c) Since the measures of two different data have been set to one measure and the value of the Z-score for Boris is higher relative to the Z-score value of Callie so Boris scored higher relatively.

Thus, the Z-score for Boris is 1.627, and the Z-score value for the Callie is 1.267, Boris scored higher relatively.

Learn more about the Z-test here:

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2 years ago

Choose the inequality that represents the following graph.

Mariana [72]

Answer:

The correct answer is B

Step-by-step explanation:

The blue line points to the left and has a closed circle, so the value of x has to be less than or equal to -4.

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2 years ago

1) Convert the following to decimals: a) 25% b) 60% c) 72.1% d) 7% e) 9.5% f).66%

JulsSmile [24]

A. 0.25
B. 0.6
C. 0.721
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When you convert percentages into decimals always move the . two spaces to the left.

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3 years ago

1. 3x + y = 11 5x - y = 21

sergeinik [125]

Answer:

[4, -1]

Step-by-step explanation:

Using the Elimination Method:

3x + y = 11

5x - y = 21

__________

8x = 32

__ ___

8 8

x = 4 [Plug this back into both equations to get the y-coordinate of -1]; -1 = y

The y's are already additive inverses [result in 0], canceling each other out.

I am joyous to assist you anytime.

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3 years ago

How many times greater is the value of the digit 2 in the 23,876 than the value of the digit 2 in 3,254

ElenaW [278]

In the number 23,876 the 2 has a value of 20,000. In the number 3,254 the 2 has a value of 200.
Therefore, the 2 in 23,876 is 100 times greater than the 2 in 3,254.
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3 years ago