Andrew is taking a multiple choice test with a total of 80 points available. Each
question is worth exactly 2 points. What would be Andrew's test score (out of 80) if
he got 8 questions wrong? What would be his score if he got x questions wrong?

Answer:Step-by-step explanation:

10

The value of the x is 8 if after using the property of a similar triangle.

It is defined as the law to prove that the two triangles have the same shape, but it is not compulsory to have the same size. The ratio of the corresponding sides is in the same proportions and the corresponding angles are congruent.

We have a triangle shown in the picture.

By using the property of a similar triangle:

2/1 = 14/(2x-9)

2x - 9 = 7

2x = 7 + 9

2x = 16

x = 8

Thus, the value of the x is 8 if after using the property of a similar triangle.

Learn more about the similarity of triangles here:

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Step-by-step explanation:

Rearrange the equation so "y" is on the left and everything else on the right. or below the line for a "less than" (y< or y≤).

The tree grows linearly, then the tree grows each year will be 20 inches.

A Linear system is a system in which the degree of the variable in the equation is one. It may contain one, two, or more than two variables.

The height of a tree is 38 inches.

After 4 years, the height is 9 feet 10 inches.

1 ft = 12 inches

9 ft = 180 inches

Then 9 ft and 10 inches will be

→ 108 + 10

→ 118 inches

The tree grows in 4 years and will be

→ 118 - 38

→ 80 inches

Let the tree grows linearly, then the tree grows each year will be

→ 80 / 4

→ 20 inches

More about the linear system link is given below.

https://brainly.com/question/20379472

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Answer:

15% = 3/20 = 0.15

1.25 =125% =5/4

12 3/8 = 12.375 = 1237.5%

Step-by-step explanation:

15% to fraction , then decimal ;

[tex]15\% = \frac{15}{100} \\Cross\:cancel\:common\:factor ; 5\\\\15\div 5 = 3\\100\div 5 = 20\\\\= \frac{3}{20}\\\\\frac{3}{20} = 0.15[/tex]

1.25 to fraction , then percentage

[tex]1.25 = \frac{1.25}{1} \times \frac{100}{100} \\\\1.25\times 100 =125\\1\times 100 = 100\\\\= \frac{125}{100} \\= \frac{5}{4} \\\\1.25\times 100\\= 125\%[/tex]

12 3/8 to decimal then percentage

[tex]12\frac{3}{8} =\frac{99}{8} = 12.375\\\\12.375\times 100\\\\= 1237.5\%[/tex]

Answer:

14 1/2

Step-by-step explanation:

I took the quiz in K12

Answer:

aye whatup my bros yall also in k12 noice im in 8th grd

Step-by-step explanation:

Answer:

$3.50

Step-by-step explanation:

Answer:

1)

[tex]12\sqrt{18}-3\sqrt{50}+\sqrt{32}[/tex]

[tex]12\sqrt{9}\sqrt{2}-3\sqrt{25} \sqrt{2} +\sqrt{16} \sqrt{2}[/tex]

[tex]12\times3\sqrt{2} -3\times5\sqrt{2}+4\sqrt{2}[/tex]

[tex]36\sqrt{2}-15\sqrt{2}+4\sqrt{2}[/tex]

[tex]25\sqrt{2}[/tex]

2)

[tex]\frac{1}{5+2\sqrt{6}}[/tex]

Multiply [tex]5-2\sqrt{6}[/tex]:

[tex]\frac{1\times \left(5-2\sqrt{6}\right)}{\left(5+2\sqrt{6}\right)\left(5-2\sqrt{6}\right)}[/tex]

Apply Difference of Squares formula: [tex](a+b)(a-b)=a^2-b^2[/tex]

[tex]\frac{5-2\sqrt{6}}{5^2-\left(2\sqrt{6}\right)^2}[/tex]

[tex]\frac{5-2\sqrt{6}}{25-2^2\left(\sqrt{6}\right)^2}[/tex]

[tex]\frac{5-2\sqrt{6}}{25-4\times6}[/tex]

[tex]\frac{5-2\sqrt{6}}{1}[/tex]

[tex]{5-2\sqrt{6}}[/tex]

a = 5, b = -2

Answer:

21

Step-by-step explanation:

Steps to solve:

-6^2

-6 * -6

6 * 6

36

Best of Luck!

Answer:

5+7=12

12=60

7=?

cross multiply

7×60/12

35macaws

4  19/27

x = 2 1/3 - 2

= 1/3

x³ + 6x² + 12x =

= (1/3)³ + 6(1/3)² + 12(1/3)

= 1/27 + 6×1/9 + 12×1/3

= 1/27 + ⁹⁾2/3 + ²⁷⁾4

= (1 + 18 + 108)/27

= 127/27

= 4  19/27

Answer:

5

Step-by-step explanation:

The mean is calculated as

mean = [tex]\frac{sum}{count}[/tex]

Here sum = 75, mean = 15 and let n be count, thus

[tex]\frac{75}{n}[/tex] = 15 ( multiply both sides by n )

75 = 15n ( divide both sides by 15 )

5 = n ← number of terms

Answer:

The answer to 6 is 5

Step-by-step explanation:

Answer:

4.322

Step-by-step explanation:

You would round up because of 8.

Hope this helps!! :D

Answer:

4.322

Since 8 is greater than 5, you round upwards.

Answer:

20.85 ft

Step-by-step explanation:

first convert 7 in to ft than add 9 to it

10×5×9.583 = 479.15ft that's how much carpet he needs for his room

500-479.15= 20.85ft left for the rest of his house

Answer:

8.5 or 8.50

Step-by-step explanation:

Move the decimal to the right four times, it will be in the middle of the 8 and 5.

Step-by-step explanation:

9. -8+(-7)=-15

10. 12+(-42)=-30

the answer is 4.6 because I divided it

The quotient of the division are solved and A = 9.5/2 = 4.75

Given data ,

Let the equation be represented as A

Now , the value of A is

Let the numerator of the fraction be p

where the value of p =  9.5

Let the denominator of the fraction be q

where q = 2

Now , the fraction is A = p/q

On simplifying the expression , we get

So , the left hand side of the equation is equated to the right hand side by the value of p/q

A = 9.5/2

On further simplification , we get

A = 4.75

Therefore , the value of A = 4.75

Hence , the fraction is A = 4.75

To learn more about fractions click :

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Answer:

y equals the value of it answer on the question if you compare two apples

Step-by-step explanation:

i took the test to find out

Answer: 148

Step-by-step explanation:

Answer:

3(8⋅7−45)+5(6⋅4−1) = 148

The answer is 4 > n.

24 >6n

4 > n

Answer:

4>n

Step-by-step explanation:

11+13>6n

24>6n

4>n

Answer: -7920

Step-by-step explanation: 33x-6x40= -7920

Answer:

0.56

Step-by-step explanation:

Answer:Step 1: Simplify both sides of the equation.

2y=4y+12

Step 2: Subtract 4y from both sides.

2y−4y=4y+12−4y

−2y=12

Step 3: Divide both sides by -2.

−2y

−2

=

12

−2

y=−6

Answer:

y=−6

Step-by-step explanation:

2x and 4x + 108 are supplementary angles and that means they add up to 180 degrees.

2x + 4x + 108 = 180

Combine like terms

6x + 108 = 180

Subtract 108 from both sides.

6x = 72

Divide both sides by 6

x = 12

Answer:

Step-by-step explanation:

first student read 120 words words per minute.

second student read 185 words per minute.

Answer:

5?

Step-by-step explanation:

You start from negative -1 and you got all the way to 4, so the distance in-between the objects are 5

Step-by-step explanation:

4x³ - 14x² + 12x

= 2x[2x² - 7x + 6]

= 2x[(2x-3)(x-2)]

= 2x(2x-3)(x-2)

Answer:

72 miles.

Step-by-step explanation:

If he uses 6 gallons of gas, you would do 6 (gallons he used) x 12 (miles per gallon) equaling 72.