Evaluate b^2 + 5a – 20

Answer:

Thank you for sharing Ahmeds brilliance with us.

Step-by-step explanation:

Answer:

The first one is 45 hours

The second is 1361

Answer:

-1+a=-6

move constant and change its sign

a=-6+1

add the number... then the Answer is :-

a=-5

I HOPE THIS HELPS

Answer:

b is the awnser to your question

Step-by-step explanation:

Answer:

The correct answer is Line EA and Line FG

Step-by-step explanation:

Answer:

Option B

Step-by-step explanation:

In order to find the answer to this question you need to use KCF and solve. Remember that negative times a positive equals a negative.

[tex]-\frac{3}{4} \div\frac{2}{8}[/tex]

Use KCF

[tex]-\frac{3}{4} \times\frac{8}{2}[/tex]

Multiply:

[tex]3 \times 8 =24[/tex]

[tex]4\times2=8[/tex]

Remember that negative times a positive equals a negative:

[tex]-\frac{24}{8}[/tex]

Simplify:

[tex]24\div8=3[/tex]

[tex]8\div8=1[/tex]

[tex]-\frac{3}{1} =-3[/tex]

[tex]=-3[/tex]

Hope this helps.

Answer:

it will take sierra about 44.4 weeks too run a marathon

Step-by-step explanation:

The expression to represent the given situation is 0.5w+4.

Given that, Sierra wants to train for a marathon. Right now she can run 4 miles.

An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division. The terms involved in an expression in math are:

Constant: A constant is a fixed numerical value.

Variable: A variable is a symbol that doesn't have a fixed value.

Let the number of weeks be w.

Now, expression is 1/2 w + 4

= 0.5w + 4

Therefore, the expression to represent the given situation is 0.5w+4.

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Answer:

The correct option is;

The situation shows correlation without causation

Step-by-step explanation:

The given data are;

Weight y     [tex]{}[/tex]            Miles Per Gallon

42     [tex]{}[/tex]                           18

36     [tex]{}[/tex]                           12

30     [tex]{}[/tex]                            6

.     [tex]{}[/tex]                                x

24     [tex]{}[/tex]                            0

The first difference of the data = 42 - 36 = 36  - 30 = 30 - 24 = 6

18 - 12 = 12 - 6 = 6 - 0 = 6

The first difference of the data is constant and equal to 6

Therefore, the graph is a straight line graph with y-intercept = 24 and slope given by the rate of change of the weight to the miles per gallon of fuel consumption as follows;

The rate of change of the weight to the miles per gallon of fuel consumption is given as follows;

(42 - 24)/(18 - 0) = 1

Therefore, the points of the data fit into the straight line and the data of the situation shows correlation

In order to show causation, and to rule out other possible causes for the rise in MPG, a separate experiment will be required whereby the cause for the rise in MPG can be determined.

Answer:

The situation shows correlation with causation.

Step-by-step explanation:

A correlation between two variables is a measure of the strength of the association between them.

It can be seen from the scatter plot that as the weight of the car increases, the miles per gallon decreases.

Causation between variables indicates that one of the variables causes the other variable to occur. Causation between variables always implies correlation.

The weight of the car affects the miles per gallon because cars that weigh more require more power to move. Hence, heavier cars get lower miles per gallon of fuel.

Therefore, the situation shows correlation with causation.

This came straight from the website the question is on.

Answer:

infinite

Step-by-step explanation:

Cara is a better deal with 60 dollars for 3 hours. 3/60= 20 dollars per hour for Cara. 45/2= 22.50 dollars per hour for Mary

Answer:

rise over run

Step-by-step explanation:

answer

In mathematics, the slope or gradient of a line is a number that describes both the direction and the steepness of the line. ... Slope is calculated by finding the ratio of the "vertical change" to the "horizontal change" between (any) two distinct points on a line.

Answer:

700

Step-by-step explanation:

3 times 10  plus 26 squared plus (1-4) times 2

= 3 times 10 plus 26 squared -3 times 2

=3 times 10  plus 676  minus 3 times 2

=30 plus 676 minus 6

=700!

Answer:

-4 just kidding it is 3

Step-by-step explanation:

Answer:

y=-1/5x+3 or slope = -1/5

Step-by-step explanation:

Answer:

x = 0.333...(repeating or .34 if u round)

Step-by-step explanation:

add 4x and 2x= 6x

20- 12 = 8

6x + 8 = 10

  -8      -8

6x = 2

6      6

x = 0.333...(repeating or .34 if u round)

Answer:

4 (2 + 9)

Step-by-step explanation:

  Given expression:

              8 + 36

The greatest common factor is the highest number that divides a number:

8 and 36 ;

  Factors of 8 : 1,2,4, 8

                  36 : 1, 2, 3, 4, 9, 18, 36

The highest common factor is 4;

  8 + 36  = 4 (2 + 9)

Answer:

MY GUY THAT ANSWER IS C

Step-by-step explanation:

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Answer:

11

Step-by-step explanation:

12/6 =2 +9=11

:)

Answer:

11

Step-by-step explanation:

Answer:

C: 1.25

Step-by-step explanation:

because 90/72 = 1.25

Answer:

slope(m)=(-33/2)

Step-by-step explanation:

Answer: I would say a but not sure sorry if you get it wrong

Step-by-step explanation:

Answer:

Hi the picture I see is a black screen, mind sending it again?

Answer:

i would help but there's no picture just a black picture

Step-by-step explanation:

Answer:

If x =2, then 3x^2 equals 12 :D

Step-by-step explanation:

The solution is 12.

In mathematics, multiplication is a method of finding the product of two or more numbers. It is one of the basic arithmetic operations, that we use in everyday life.

here, we have,

5-x= 3

i.e. x=2

so, we get,

3x^2

=3*x*x

=12

Hence, the solution is 12.

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Answer:

61

Step-by-step explanation: