Solve 31-X + (2 x + 1)] = x - 1.

Step-by-step explanation:

[tex]y - [ - x - (y + 15)] \\ = ( - 9) - [ - (18)- (( - 9) + 15)] \\ = ( - 9) - [ - (18)- ( 6)] \\ = ( - 9) - [ - 24] \\ = - 9 + 24 = \boxed{15} \\ \\ - 6(x - 2) - 5(x + 7) \\ = - 6x + 12 - 5x - 35 \\\boxed{ = - 11x - 23 }\\ \\ \frac{3}{4}( 4x + \frac{4}{3} ) = 4x \\ 3x + 1 = 4x \\ 4x - 3x = 1 \\ \boxed{ x = 1}[/tex]

Answer:

dilation

Step-by-step explanation:

Hope this helps!

Answer:

Dilation

Step-by-step explanation:

The image is bigger

Answer: A spanning tree

Step-by-step explanation:

Answer:

8 IN by 6 in

Step-by-step explanation:

Hope it helps :)

Answer:

Step-by-step explanation:

let the width be w

p=l*w

1200= 200*w

1200= 200w

1200 = 200w

6 feet = w

width is 6 feet

let the length be a

p = l* w

1200 = a* 6

1200 = 6a

1200 = 6a

200 feet  = a

length is 200 feet

Answer:

-3x -4

Step-by-step explanation:

did the test

Answer:

350%

Step-by-step explanation:

First, there is a whole number in the ones place, so that number will be in the hundreds place of your percent. Then to find the percent of 0.5 you put the decimal part over 10:

5/10 = 1/2 = 50%

The equation that is correct is 11.11 = 11² = 121. The correct answer is the fourth option: 11 dot 11 equals 11 Superscript 2 equals 121 (11.11 = 11² = 121)

From the question,

We are to determine which of the options is correct.

To determine which of the options is correct, we will evaluate the options one after the other.

8 dot 8 equals 8 Superscript 2 equals 16

That is,

8.8 = 8² = 16

Evaluating properly

8.8 = 8² = 8 × 8 = 64

Then, 8.8 = 8² ≠ 16

∴ This is NOT correct

9 dot 9 equals 2 left-parenthesis 9 right-parenthesis equals 18

That is,

9.9 = 2(9) = 18

Evaluating properly

9.9 = 9 × 9 = 9² = 81

Then, 9.9 ≠ 2(9) = 18

∴ This is NOT correct

10 dot 10 equals 2 left-parenthesis 10 right-parenthesis equals 100

That is,

10.10 = 2(10) = 100

Evaluating properly

10.10 = 10 × 10 = 10² = 100

Then, 10.10 ≠ 2(10) ≠ 100

∴This is NOT correct

11 dot 11 equals 11 Superscript 2 equals 121

That is,

11.11 = 11² = 121

Evaluating properly

11.11 = 11² = 11 × 11 = 121

Then, 11.11 = 11² = 121

This is correct.

Hence, the equation that is correct is 11.11 = 11² = 121. The correct answer is the fourth option: 11 dot 11 equals 11 Superscript 2 equals 121 (11.11 = 11² = 121)

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Answer:

It’s 61.40 percent so rounding to the nearest percent would be 61% he needs to increase

The sofa cost $848 while the chair cost $404

Let x represent the cost of the sofa and y represent the cost of the chair.

The sofa cost $40 more  than twice the chair, hence:

x = 2y + 40

x - 2y = 40        (1)

She paid a total of $1252, hence:

x + y = 1252     (2)

Solving equation 1 and 2 simultaneously gives:

x = 848, y = 404

Therefore the sofa cost $848 while the chair cost $404

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Answers:

============================================================

Explanation:

These angles are on alternating sides of the transversal line, and they are exterior of the parallel lines. Therefore, these are alternate exterior angles.

Alternate exterior angles are congruent when we have parallel lines like this.

Set the two expressions equal to each other. Solve for x.

3x-31 = x+59

3x-x = 59+31

2x = 90

x = 90/2

x = 45

Then we can find that:

Both alternate exterior angles are 104 degrees each, which confirms we have the correct x value.

Answer:

answer is D

Step-by-step explanation:

Answer: D.

Step-by-step explanation:

Answer:

38 yards because you add all them together

Answer: B. Two billion, eighty million :)

Answer:

15...your welcome my dude

5

Step-by-step explanation:

Refer to the Attachment.

Refer to the attachment

Answer:

The choice A.

Step-by-step explanation:

sin= Opposite/ hypotenuse

[tex] \sin(30) = \frac{ \sqrt{15} }{x} \\ \\ x = 2 \sqrt{15} [/tex]

tan = opposite/adjacent

[tex] \tan(30) = \frac{ \sqrt{15} }{y} \\ \\ y = 3 \sqrt{5} [/tex]

I hope I helped you^_^

Answer:

Step-by-step explanation:

LCM  of 5 , 2 and 4 = 20

[tex]\dfrac{1}{5}+\dfrac{1}{2}+\dfrac{1}{4}=\dfrac{1*4}{5*4}+\dfrac{1*10}{2*10}+\dfrac{1*5}{4*5}\\\\=\dfrac{4}{20}+\dfrac{10}{20}+\dfrac{5}{20}\\\\=\dfrac{4+10+5}{20}\\\\=\dfrac{19}{20}[/tex]

Answer:

25

Step-by-step explanation:

30=17+x-12

Answer:

4 n (2) + 10 n +4

Step-by-step explanation:

Step-by-step explanation:

Simplify the expression by opening parenthesis:

As we see the expression has 4 as one of factors so is divisible by 4.

Answer: o

Step-by-step explanation:

Answer:

No

Step-by-step explanation:

two thirds of 12 is 8

Answer:

-4x+1/10

Step-by-step explanation:

hope this helps mb if its wrong

Answer:

Step-by-step explanation:

Sample standard deviation refers to the statistical metric that is used to measure the extent by which a random variable diverges from the mean of the sample and it is calculated by adding the squares of the deviation of each variable from the mean, then divide the result by a number of variables minus and then computing the square root in excel of the result.

Hope this helps :}

Pls mark brainliest :P

And have an amazing day <3

Answer:

A sample standard deviation is a statistic. This means that it is calculated from only some of the individuals in a population. Since the sample standard deviation depends upon the sample, it has greater variability. Thus the standard deviation of the sample is greater than that of the population.

Step-by-step explanation:

Answer:

19 times 3 equal  57

Step-by-step explanation:

57 square feet