Albert took a history test. He got 43 problems right out of the 50 problems on the test. What percentage did Albert get right?

Answer:

Step-by-step explanation:

this is an arithmetic series

and to find out the 9th term

1 second       ....................... k feet

2 second...........................2.5 feet

3 sec.....................................4 feet

4 sec....................................5.5 feet

difference 1.5

5 sec................................7 feet

6 sec................................8.5

7 sec.................................10 ft

8

9second .............................................13 ft

Answer:

These add up to -5x

Step-by-step explanation:

What you have here is three multiples of x being added and subtracted.  Since they are all in the same format (a constant number times x), you can simply add the numbers together.

A potentially easier way to look at it is to think of x as just some type of item. Maybe x is an apple.  This means that you are taking -14 apples, subtracting 10 apples, and adding 19 apples.

With that in mind, all you need to do here is take the sum of the numbers, and multiply that by x to get the answer.

[tex]-14x - 10x + 19x\\\\Is\ the\ same\ as\ saying:\\-14 \times x - 10 \times x + 19 \times x\\\\= x(-14 - 10 + 19)\\\\= x \times -5\\= -5x[/tex]

Answer:

The first one and second and fifth one. :)

Step-by-step explanation:

Answer:

40

Step-by-step explanation:

Answer:

it is 25 hope this helped

Step-by-step explanation:

Hi there! :)

Answer:

The answer is D. 25% of 180 is 45.

Step-by-step explanation:

Let's replace "what percent" with the letter "x" because it's what we are looking for.

The word "of" is the same thing as a multiplication sign, which means that the sentence "What percent of 180 is 45?" can turn into "x times 180 is 45".

The word "is" is the same thing as an equation sign, wich means that you can write this as an equation:

x × 180 = 45

180x = 45

Now all you have to do is solve this equation by isolating "x" to find your answer:

180x = 45

Divide each side of the equation by 180 → 45 ÷ 180 = 0.25

x = 0.25

0.25 = 25 ÷ 100 = 25%

There you go! I really hope this helped, if there's anything just let me know! :D

__________________________________________________________

こんにちは！ :)

回答：

答えはDです。180の25％は45です。

ステップバイステップの説明：

「何パーセント」を文字「x」に置き換えましょう。これが私たちが探しているものだからです。

「of」という単語は乗算記号と同じです。つまり、「180の何パーセントが45ですか？」という文です。 「x×180は45」になります。

「is」という単語は方程式の記号と同じものです。これは、これを方程式として記述できることを意味します。

x×180 = 45

180x = 45

今、あなたがしなければならないのはあなたの答えを見つけるために「x」を分離することによってこの方程式を解くことです：

180x = 45

方程式の各辺を180→45÷180 = 0.25で割ります

x = 0.25

0.25 = 25÷100 = 25％

どうぞ！何かあったら教えてください！ :D

the answer is 16 because the arc divides the angle into two equal half

Answer:

A) 4V15

Step-by-step explanation:

let me know if you need an explanation! hope this helpful! c:

Answer:

x = 3

Step-by-step explanation:

3x - 12 = -3

3x = 9

x = 3

Answer:

3(x-4)=-3

3x-12 =-3

3x= -3+12

3x= 9

x=9÷3

x= 3

Answer:

10. a

11.c

12.b

Step-by-step explanation:

Answer: -51 - 6*i

Step-by-step explanation:

Remember that if N is a positive number, then:

√(-N) = √N*i

Now we have the equation:

(-√9 + √(-4)) - (2*√576 + √-64)

We can use the first relation and rewrite this as:

(-√9 + √(4)*i) - (2*√576 + √64*i)

Now, all the square roots in the equation are easy ones, like:

√9 = 3

√4 = 2

√64 = 8

√576 = 24

So if we replace these in our equation, we get:

(-3 + 2*i) - (2*24 + 8*i)

-3 + 2*i - 48 - 8*i

Now we group the terms with "i" and the terms without "i"

(-3 - 48) + (2*i - 8*i) = -51 - 6*i

Then the correct option is: -51 - 6*i

Answer:

answer of second question 12x-6 =6(2x-1)

Step-by-step explanation:

12x-6

= 6(2x-1) take the common

=Answer=6(2x-1)

Step-by-step explanation:

-3. 10000 sure the slope is -3

Answer:

-3

Step-by-step explanation:

Answer:

Where is the model? Sally runs 4/10 miles farther than tom.

Step-by-step explanation:

7/10-3/10=4/10

Sally runs 4/10 miles farther than tom.

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value.

If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.

We are given that Sally runs 7/10 mile tom runs 3/10 mile.

The difference between the miles they run can be calculated as;

7/10-3/10=4/10

We can conclude that Sally runs 4/10 miles farther than tom.

Learn more about the unitary method, please visit the link given below;

https://brainly.com/question/23423168

#SPJ5

you will need 7 cups of sugar. 35 divided by 5 is 7.

Answer: You will need 7 cups of sugar.

Step-by-step explanation:

For every 5 eggs, you add one cup of sugar. 35 eggs divided by 5 eggs = 7 cups of sugar.

Answer:

36 grams

Step-by-step explanation:

To do this, you first convert 15% into a decimal.

15% = 0.15.

Next, all you have to do is multiply 0.15 * 240 = 36 grams

Answer:

36 grams

Step-by-step explanation:

15 percent means .15. When you multiply .15 and 240, you get 36. So its 36 grams.

Answer:

[tex]\frac{x^{2} -8x+16}{x^{2} -7x+12}=\frac{x^{2} -2.4.x+4^{2} }{x^{2} -3x-4x+12}=\frac{(x-4)^{2} }{x(x-3)-4(x-3)}=\frac{(x-4)^{2} }{(x-4)(x-3)}=\frac{x-4}{x-3}[/tex]

Step-by-step explanation:

Answer:

(x-4)/(x-3)

Step-by-step explanation:

[tex] {x}^{2} - 4x + 16 = (x - 4)(x - 4)[/tex]

[tex] {x}^{2} - 7x + 12 = (x - 4)(x - 3)[/tex]

Therefore, on dividing, result is (x-4)/(x-3)

Answer:

Step-by-step explanation:

-2x - 3y=-7

-3y=-7+2x

y=(-7+2x)/3

Answer:

Heres an easy one

Step-by-step explanation:

I had four pencil boxes I want to know what the total is but To do that I need to find out the Y variable

Answer:

H

Step-by-step explanation:

Answer:

u get it done?

Step-by-step explanation:

Answer:

37.5% of the town probably go to the park everyday.

Step-by-step explanation:

45:120*100 =

(45*100):120 =

4500:120 = 37.5

Answer:

B

Step-by-step explanation:

Plug the values of x into each equation

Answer:

1/2 is the simplified from of 50/100 so it is equivalent

Step-by-step explanation:

Answer:

v₁ = 2.5; v₂ = 0.5.

Step-by-step explanation:

4v² + 8v + 5 = 10

4v² + 8v + 5 - 10 = 10 - 10

4v² + 8v - 5 = 0

D = 8² - 4 · 4 · (-5) = 64 + 80 = 144

[tex]v_{1} =\dfrac{-8-\sqrt{144} }{2 \cdot 4} =\dfrac{-8-12 }{8} =\dfrac{-20}{8} =-2.5\\\\v_{2} =\dfrac{-8+\sqrt{144} }{2 \cdot 4} =\dfrac{-8+12 }{8} =\dfrac{4}{8} =0.5\\\\[/tex]

Answer:

300

Step-by-step explanation:

120÷40=3

3×100=300

dividing 120 by 4 will get you 1% so then to find 100% you multiple by 100

Answer:

300

Step-by-step explanation:

The total number of desserts is x. we don't know what it is.

40% of all the desserts are cookies.

That is 40% of x.

We are told that 120 of the desserts are cookies.

That means that 40% of all desserts amount to 120.

40% of x = 120

0.4x = 120

Divide both sides by 0.4

0.4x/0.4 = 120/0.4

x = 300

Answer: In all there are 300 desserts.

Answer:

x = (3+\sqrt(13))/(2)

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

nine over twenty i think i dont remember i did this last year

Answer:

C. nine over twenty

Step-by-step explanation:

First we should do all of the dividing of the fractions

8/20 =  .4       =   40%

9/25 =  .36     =   36%

9/20 =  .45     =   45%

8/25 =  .32     =   32%

then turn them into percentages