Help me fast please !!!!!!!!!!!!!!!!!!!!

Answer:

Step-by-step explanation:

a) (x +4)·9 = 9x +36

__

b) y +7 +8 -7(x -8) = y +7 +8 -7x +56 = y +15 -7x +56 = y -7x +71

__

c) (4 -5) +x(6 -8) = -1 +x(-2) = -2x -1

__

d) y(4 -8) -3y = y(-4) -3y = -4y -3y = -7y

__

e) x +8y -16x(1 -3) = x +8y -16x(-2) = x +8y +32x = 33x +8y

__

f) 8² -x(4 -8) +√25 = 64 -x(4 -8) +5 = 64 -x(-4) +5 = 64 +4x +5 = 4x +69

__

g) 5³ -4(y -7y) -√81 = 125 -4(y -7y) -9 = 125 -4(-6y) -9 = 125 +24y -9 = 24y +116

__

h) x² -4 -5y -√36·√144 +23(x -5x) = x² -4 -5y -6·12 +23(x -5x)

  = x² -4 -5y -6·12 +23(-4x) = x² -4 -5y -72 -92x = x² -92x -5y -76

answer: c i believe   hope it helps!!! :D

Answer:

.125

Step-by-step explanation:

4 is one-eighth (1/8) of 32, which would be represented by the decimal .125 or 0.125

Answer:

Slope, sometimes referred to as gradient in mathematics, is a number that measures the steepness and direction of a line, or a section of a line connecting two points, and is usually denoted by m. Generally, a line's steepness is measured by the absolute value of its slope, m.

Step-by-step explanation:

Answer:

7-4 = 3

the change is 3 emails

Step-by-step explanation:

Given parameters:

    First move = 100m east

    Second move  = 50m west

Unknown:

Distance = ?

Displacement  = ?

Solution:

Distance is total path length covered

Displacement is the distance in a specific direction from start to finish.

            -----------------------→

                       100m

                            ←---------

                               50m

So,

        Distance  = first move + second move  = 100 + 50  = 150m

       Displacement  = 100 - 50  = 50m due West

Answer:

100-43= 57

Explanation:

So, Frazer did 57% wrong

Answer:

57% incorrect wow he should have studied better lol ;)

Step-by-step explanation:

If he SCORED 43%, than out of 100% the remaining is 57%

Answer:

You have done it incorrectly It's B (2.333...) not C.

Answer:

2.3

Step-by-step explanation:

is your answer

Answer:60%

Step-by-step explanation: I got this right on a test

I guess the expressions are supposed to be (a + 1)² and (a + 1)³.

Consider the inequality,

(a + 1)² > (a + 1)³

Move everything to one side:

(a + 1)² - (a + 1)³ > 0

Factorize the left side:

(a + 1)² (1 - (a + 1)) > 0

-a (a + 1)² > 0

a (a + 1)² < 0

Notice that the left side is exactly 0 if either a = 0 or a = -1.

Now consider the following 3 cases:

• If a < -1, then a is negative, while (a + 1)² is always non-negative, which means a (a + 1)² will always be negative.

• If -1 < a < 0, then again a is negative, so a (a + 1)² is also negative.

• If a > 0, then a (a + 1)² is always positive.

So the inequality is satisfied for all a in the interval (-∞, -1) ∪ (-1, 0). This is to say that (a + 1)² is always greater than (a + 1)³ if a is chosen from this domain.

Another way to look at this: assume a + 1 falls between -1 and 1. Whenever you scale a number between -1 and 1 by another number in the same range, the product will always be smaller than the original number.

More concretely, let's say a + 1 = 1/2. So for instance, 1/2 * 1/2 = (1/2)² = 1/4, and 1/4 is clearly smaller than 1/2. If we multipy again by 1/2, we get 1/2 * 1/2 * 1/2 = (1/2)³ = 1/8, which is smaller than 1/4.

Answer:

a

 True mean diameter[tex][\mu][/tex]

b

    The null hypothesis is  [tex]H_o : \mu = 1.65 \ mm[/tex]

    The alternative hypothesis is  [tex]H_a : \mu \ne 1.65[/tex]

c

Gnerally type I error occurs when the null hypothesis is wrongfully rejected  

The consequence of this is that the wrongfully rejecting a batch of needles because the company do not find strong evidence that its true mean diameter  is 1.65 mm whereas it is  

d

Gnerally type II error occurs when the null hypothesis is wrongfully accepted  

The consequence of this is that the wrongfully accepting  a batch of needles because the company do find strong evidence that its true mean diameter is 1.65 mm whereas it is not    

Step-by-step explanation:

Generally from the question we are told that

    The  needle  needs to have a diameter of  1.65 mm

Now statistically the parameter of interest in the context of this study is the true mean diameter of the needle  and  the symbol is  [tex]\mu[/tex]

    The null hypothesis is  [tex]H_o : \mu = 1.65 \ mm[/tex]

    The alternative hypothesis is  [tex]H_a : \mu \ne 1.65[/tex]

Gnerally type I error occurs when the null hypothesis is wrongfully rejected  

The consequence of this is that the wrongfully rejecting a batch of needles because the company do not find strong evidence that its true mean is 1.65 mm whereas it is  

Gnerally type II error occurs when the null hypothesis is wrongfully accepted  

The consequence of this is that the wrongfully accepting  a batch of needles because the company do find strong evidence that its true mean is 1.65 mm whereas it is not  

Answer: 56

Step-by-step explanation: Hopefully this helps!

Answer:

56, I hope this helps

Answer:B (57.0 F°)

Step-by-step explanation:

Answer:

71.4 (D)

Step-by-step explanation:

Edge 2020

I took the test, guessed and got it right

Have a great day everyone

Answer:

2/5

Step-by-step explanation:

we see that 2x2=4

and 5x5is equal to 25

so the answer is 2/5

Answer:

2/5

Step-by-step explanation:

2/5 * 2/5 = 4/25

the number that you can multiply by its self to get 4 is 2 and the number that you can multiply by its self to get 25 is 5

Answer:

A perfect square is the product of a rational number multiplied by itself.

4, 9, and 16 are perfect squares

1, 2, 3, 5, 6, etc. are not perfect squares

Step-by-step explanation:

Answer:

please mark brainliest!

Step-by-step explanation:

A number that is a perfect square is a number that can be square rooted kind of in a perfect match. Example would be 9 because it can be square rooted by 3 for 3 * 3. Another example that would not be a perfect square would be 30 because it can divided by 6 * 5 but neither one of those numbers are perfect squares.

A number called a perfect square means that the number has an exact squared root. In other words, the number has an squared power, which is exact.

Other way to see this, it's taking natural number 1, 2, 3, 4 then, applying the squared power to each one, the results of each squared power is what we call a perfect square. For example, 1, 4, 9, 16, 25, 36, are all perfect square, because they are the result of a squared power:

[tex]1^{2} = 1\\2^2 = 4\\3^2 = 9\\4^2 = 16\\5^2 = 25\\6^2 = 36[/tex]

Answer:

it would be C ;0

Step-by-step explanation:

Answer:

x = pp(4.25)-2

Step-by-step explanation:

x is the cost

Answer:

Step-by-step explanation:

See the attached file .

Answer:

3 sjshgegegegehsksksjsjsissjs

Answer: 5

Step-by-step explanation:

When the number after the point is 5 and above round up

4.5 rounded to the nearest whole number is 5.

When you round a decimal number to the nearest whole number, you are determining which whole number it is closest to.

For 4.5, you can visualize it on the number line.

The decimal number 4.5 lies exactly midway between 4 and 5.

To round to the nearest whole number, we look at the digit immediately to the right of the decimal point, which is 5.

Since 5 is greater than or equal to 5 (the midpoint), we round up to the next whole number, which is 5.

Therefore, 4.5 rounded to the nearest whole number is 5.

To learn more on Number system click:

https://brainly.com/question/1763119

#SPJ6

Answer:

like a opposite side of a question

Step-by-step explanation:

opposite (of angle)between opposite side of the intersection of two line

Answer:

[tex]uw = - 4 + 2x = 11 + x - 5 \\ - 4 + 2x = x + 6 \\ 2x - x = 6 + 4 \\ x = 10 \\ \\ uw = - 4 + 2(10) = 16[/tex]

Step-by-step explanation:

ww= - 4 + 2x = 11 + x - 5

- 4 + 2x = x+6

2x - x = 6+4

x=10

ww = -4 +2(10)=16

Answer:

0.052 kilometers

Step-by-step explanation:

There are .001 kilometers in 1 meter. So to convert meters to kilometers, multiply the number of meters by .001. 52x.001=.052

I hope you understand...have an awesome day!!! C:

Answer:

A.

Step-by-step explanation:

5x100= 500

6x10= 60

7x1= 7

500+60+7= 567

Answer:

The answer is A

Step-by-step explanation:

(5*100)+(6*10)+(7*1)

500+60+7 = 567

Answer:

x= -8 1/2

Step-by-step explanation:

Step-by-step explanation:

x ÷ 3 - 7 = -2

x - 7 = -2 × 3

x - 7 = -6

x = -6 + 7

x = 1

Answer:x ÷ 3 - 7 = -2

x - 7 = -2 × 3

x - 7 = -6

x = -6 + 7

x = 1

Step-by-step explanation:

Answer:

The answer is below

Step-by-step explanation:

given that:

n = sample size = 200, p = probability of a cancelled reservation = 1 - 0.9 = 0.1

The z score is given by:

[tex]z=\frac{x-mean}{standard\ deviation} =\frac{x-np}{\sqrt{np(1-p)} }[/tex]

a) The probability that all the passengers who arrives can be seated can only occur if atleast 15 or more passengers cancelled their reservations.

P(X ≥ 15) = 1 - P(X ≤ 14.5)

[tex]z=\frac{x-np}{\sqrt{np(1-p)} }=\frac{14.5-(200*0.1)}{\sqrt{(200*0.1)(1-0.1)} }=-1.3[/tex]

From the normal distribution table:

P(X ≥ 15) = 1 - P(X ≤ 14.5) = 1 - P(z < -1.3) = 1 - 0.0968 = 0.9

b) The probability that there are empty seat only occur if atleast 16 or more passengers cancelled their reservations.

P(X ≥ 16) = 1 - P(X ≤ 15.5)

[tex]z=\frac{x-np}{\sqrt{np(1-p)} }=\frac{15.5-(200*0.1)}{\sqrt{(200*0.1)(1-0.1)} }=-1.06[/tex]

From the normal distribution table:

P(X ≥ 16) = 1 - P(X ≤ 15.5) = 1 - P(z < -1.06) = 1 - 0.1446 = 0.8554

c)

[tex]0.95=P(X\geq n-185)=1-P(X\leq n-185)\\\\P(X\leq n-185)=1-0.95\\\\P(X\leq n-185)=0.05\\\\0.05=P(Z<\frac{n-185-0.1n}{\sqrt{0.9*0.1*n} } )\\\\0.05 \ correspond\ to \ a\ probability\ of\ -1.64\\\\-1.64=\frac{0.9n-185}{\sqrt{0.9*0.1*n} } \\\\n=198[/tex]

Answer:

v = 10

Step-by-step explanation:

-10 - 6(2v-8) = -82

-10 - 12v + 48 = -82

-12v + 38 = -82

-12v = -120

v = 10

hope this helped, if you need a more in depth answer to how i did it just ask

Answer:

Hello! I hope I’m correct! :)

Step-by-step explanation:

The answer should be V = 10

First, Add 10 to both sides.

-6(2v-8) = -82+10

Next, Simplify

-6(2v-8) = -72

Than, divide both sides by -6

= -72/-6

{Note: two negatives makes a positive}

= 72/6

Simplify.

2v-8=12

Add (+) 8 to both of the sides.

2v= 12+8

Simplify 12+8 to...

2v = 20

Now, divide both sides by 2

V = 20/2

Since we have 20/2, we need to simplify (divide 20 & 2)

20 divided by 2 = 10

V = 10

Hope this helps! If you have any questions about these steps, feel free to ask! Have a nice day! :)

~by, BrainlyAnime <3