Help plz:))) I’ll mark u brainliest ASAP 10 points(:(: Xx thank you....!!!

Answer:

$70

Step-by-step explanation:

50+20=70

The required expression is given for the Nikko is t = 50 + 20h.

Given that,
The repairman will charge Nikko a flat fee of $50 plus an additional $20 for each hour he needs to work on it.

The equation is the relationship between variables and represented as y = ax + b is an example of a polynomial equation.

here,
t is the total cost the repairman charged to Nikko,
h is the number of hours,
repair men charges for h hours = $20h
repair men charge a flat fee of $50.
Total charge, t = 50 + 20h

Thus, the required expression given for the Nikko is t = 50 + 20h.

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Answer:

Step-by-step explanation:

I think its c

Answer:

I only got B

Step-by-step explanation:

Put the x-values into the equation and solve for each.

Answer:

(15, -6)

Step-by-step explanation:

x + y = 9

x - y = 21

x = 9 - y

plug in x into second equation

9 - y - y = 21

9 - 2y = 21

-2y = 12

y = -6

plug in y.

x - (-6) = 21

x + 6 = 21

x = 15

check

15 + (-6) = 9

15 - (-6) = 21

Answer:-3/9

Step-by-step explanation:

When you adding or subtracting fractions they need to have the same denominator... which in the question they do! :) after you get your denominator the same you add the second numerator from the first one, in this one it’s 3 + (-6). Oh no a negative! But don’t worry when you add a negative it’s just like subtracting a regular number, so you really are just doing 3-6 which is -3 then you just put that over the denominator you had before, and you get -3/9

Answer:

B and D

Step-by-step explanation:

9x10=90

10x9=90

Answer:

16 : 20 = 0,8 = 80%

Step-by-step explanation:

pls make me a brinist

Answer:

The  width is  [tex]W = 1.2786[/tex]

Step-by-step explanation:

From the question we are told that

    The  sample size is  n = 16    

      The mean time is  [tex]\= x = 2.8 \ minute[/tex]    

     The standard deviation is  [tex]s = 1.2 \ minutes[/tex]

Generally the degree of freedom is mathematically represented as  

         [tex]df = n - 1[/tex]

=>      [tex]df = 16 - 1[/tex]

=>     [tex]df = 15[/tex]

From the question we are told the confidence level is  95% , hence the level of significance is    

      [tex]\alpha = (100 - 95 ) \%[/tex]

=>   [tex]\alpha = 0.05[/tex]

Generally from the t distribution table the critical value  of  [tex]\frac{\alpha }{2}[/tex] at a degree of freedom of  df = 15 is  

   [tex]t_{\frac{\alpha }{2} , 15 } =  2.131[/tex]

Generally the margin of error is mathematically represented as  

      [tex]E = t_{\frac{\alpha }{2}, 15 } *  \frac{\sigma }{\sqrt{n} }[/tex]

=>    [tex]E = 2.131  *  \frac{ 1.2 }{\sqrt{16} }[/tex]

=>    [tex]E = 0.6393 [/tex]

Generally the width the confidence 95% confidence interval  

       [tex]W = 2 * E[/tex]

=>    [tex]W = 2 * 0.6393[/tex]

=>    [tex]W = 1.2786[/tex]

Answer:

30

Step-by-step explanation:

If the magazines and books together add up to a total of 60 books, then he bought 30 magazines and 30 books.

Answer: 128

Step-by-step explanation:

Answer:

C should be your answer if I'm not right then forgive me please.

Step-by-step explanation:

Answer:

B and D

Step-by-step explanation:

Answer: 36+4h=60

36+4h-36=60-36

4h=24

4h÷4=24÷4

h=6

So, after the move they can spend 6 hours there. (6×4=24, 24+36=60, they will spend $60 if they spend 6 hours there, $56 if they spend 5 hours there and don't want to spend $60).

Step-by-step explanation:

Answer:

f(x) = 26

Step-by-step explanation:

Evaluate the Function

f (x) = −4x + 6  f (−3) + 8

Replace the variable x with −3 in the expression.

f (−3) = −4 ⋅ −3 + 6

Simplify (−4 ⋅ −3 + 6) + 8

Multiply −4 by −3.

12 + 6 + 8

Add 12 and 6.

18 + 8

Add 18 and 8.

26

hope this helps :)

Answer:

Answer in explanation

Step-by-step explanation:

Linear Modeling

It's given a situation where a student has two summer jobs and wants to collect $750 to pay for a down payment on a car. He gets paid $25 for each lawn mowed and $15 for each pool cleaned

Let

x = number of lawns mowed

y = number of pools cleaned

He wants to make $750, thus:

25x + 15 y = 750

Dividing by 5, we have the model that represents the linear relationship:

5x  + 3y = 150

The x-intercept can be found by setting y=0:

5x  + 3(0) = 150

5x = 150

Dividing by 5:

x = 150/5 = 30

x = 30

This represents the situation where the student gets his $750 by only mowing 30 lawns, no pools cleaned.

The y-intercept can be found by setting x =0:

5(0)  + 3y = 150

3y = 150

y = 150/3 = 50

y = 50

This represents the situation where the student gets his $750 by only cleaning 50 pools, no lawns mowed.

Starting from the basic equation

5x  + 3y = 150

We can give x some arbitrary value (less than 30) and find the value for y.

For example, for x=12

5*12 + 3y = 150

60 + 3y = 150

3y = 150 - 60 = 90

y = 90/3=30

This solution corresponds to the case where the student gets $750 by mowing 12 lawns and cleaning 30 pools.

For example, for x=21

5*21 + 3y = 150

105 + 3y = 150

3y = 150 - 105 = 45

y = 45/3=15

This solution corresponds to the case where the student gets $750 by mowing 21 lawns and cleaning 15 pools.

Answer:

The option is  b

Step-by-step explanation:

From the question we are told that

    The sample size is  n =  2500

   The number with a graduate degree is  k =  555

    The sample  proportion is [tex]\^ p = 0.222[/tex]

Generally the standard error is mathematically represented as

           [tex]SE = \sqrt{\frac{\^ p (1- \^ p )}{n} }[/tex]

=>        [tex]SE = \sqrt{\frac{0.222 (1- 0.22 )}{2500 } }[/tex]

=>        [tex]SE = 0.010[/tex]

Converting to percentage

           [tex]SE = 0.010 * 100[/tex]

=>       [tex]SE =10\%[/tex]

Answer:

its blurry add my sn$p kevinscoolrevi7 and I got u

Answer:

The four angles add up to 180° is not a property of parallelogram

Answer:

$22.95

Step-by-step explanation:

Answer:

90

Step-by-step explanation:

Answer:

90

Step-by-step explanation:

Answer: (3)

Step-by-step explanation:

In this problem, we don't know the length or width. All we do know is that the length is 5 feet longer than the width, and that the perimeter is 54 feet. Both lengths plus both widths equals the perimeter. To solve this problem, you must give the width, the value of x.

Step 1: Draw a rectangle where the width is x and the length is x + 5.

Step 2: Find the sum of the lengths and the sum of the widths

2 times the length plus 2 times the width equals the perimeter

2(x + 5) + 2(x) = 54

Step 3: Solve for the width

2(x + 5) + 2(x) = 54

2x + 10 + 2x = 54 (Distributive Property)

4x + 10 = 54 (Group Like Terms)

4x = 44 (Subtraction Property of Equality)

4x/4 = 44/4

x = 11 (Division Property of Equality)

x = width = 11

Step 4: Solve for the length

x + 5 = length

11 + 5 = 16

Length = 16. So (3) must be the answer.

Answer:

00000

Step-by-step explanation:

poop

Answer:

134 is the ONLY correct answer

Step-by-step explanation:

This is because it is asking for X, not the interior angle that's missing. You do need that angle to find the correct answer.

All triangles are equal to 180 degrees.

180-88-46=46

And all supplementary angles are equal to 180 degrees.

Therefore, 180-46 (as that is the only known angle) makes it 134 degrees.

67, 88 are not correct as one of them isn't obtuse and the other isn't to scale, 111 isn't correct as the math backs up 134 which is also an obtuse angle

.

Answer:

Step-by-step explanation:

480 because you multipy 4 times 8 and than you mulpyy 48 times 10 and that is how i got the number 480.

Answer:

480 because you multiply 4 times 8 and then you multiply 48 times 10 and that is how I got the number 480.

Answer:

0.081

Step-by-step explanation:

Given parameters:

Vertical drop  = 70ft

Horizontal distance  = 866ft

Unknown:

Slope of the rapids  =?

Solution:

Slope is the rise or vertical height divide by the horizonal distance.

  Slope  = [tex]\frac{vertical drop}{horizontal distance}[/tex]

  Insert the parameters and solve;

  Slope  = [tex]\frac{70}{866}[/tex]   = 0.081

Based on the information given the slope of the rapids is 0.081.

Using this formula

Slope of the rapids=Vertically rapid drop/Horizontal distance

Let plug in the formula

Slope of the rapids=70ft/866ft

Slope of the rapids=0.0808

Slope of the rapids=0.081 (Approximately)

Inconclusion the slope of the rapids is 0.081.

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Answer:

9/4 inches

Step-by-step explanation:

42 is 3x more than 14. therefore, what is 3x more than 3/4 is 9/4

Answer:

9/4

Step-by-step explanation:

14 times 3 = 42

3/4 times 3 = 2.25

2.25 in fraction form is 9/4

Answer:

1= 6

2= 1

3= 2

4= -0.6

5= 0>2

Step-by-step explanation:

i think i am correct. the value is 0 so don't be confuse in last one