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denis23 [38]
4 years ago
11

On a 50 question test a student awncerd 5 questions wrong what percent did he awncer correctly

Mathematics
2 answers:
Sloan [31]4 years ago
8 0

Answer:

10%

Step-by-step explanation:

5 is 10% of 50.

sergey [27]4 years ago
4 0

90% because you have to divide the number of correct answers by the total number of questions. Once you do that, you get 45/50 which equals 0.9 or 0.90 which is 90%

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25. The width of a rectangle is (x+1) and the length is (X-6). What is the length and width of the rectangle if the area is
Elis [28]

Answer:

x=−4 or x=9

Step-by-step explanation:

1- As we know the formula for Area of rectangle = length x width

2- Multiply given width = (x+1) with length = (x-6)

3-Equation will be (x+1)(x-6) = 30

4- Solving x^2−5 x−6  = 30

5- x^2−5 x -36 = 0

6-Factor left side of equation.

(x+4)(x−9)=0

Set factors equal to 0.

x+4=0 or x−9=0

6 0
3 years ago
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X² +12x+27 = 0<br><br> Find the roots of each equation by factoring
Setler79 [48]

Answer:

x = -9, -3

Step-by-step explanation:

{x }^{2} + 12x + 27 = 0

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5 0
2 years ago
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Instructions: Complete each question by choosing or typing in the best answer.
kupik [55]

The sum of 38 and twice a number x is 124. The value of "x" is 43

- 2x - 5 is equal to – 91.

<u>Solution:</u>

Given that , The sum of 38 and twice a number x is 124.  

We have to find what is - 2x - 5?

Now, according to given information, 38 + 2 × x = 124  

2x + 38 = 124  

2x = 124 – 38  

2x = 86  

x = 43

So, the value of x is 43

<em><u>Now, Evaluating - 2x – 5  </u></em>

Substitute "x" = 43 to evaluate

- 2(43) – 5  

- 86 – 5  = - 91

Hence, the required answer is – 91.

5 0
4 years ago
Tania measured the growth of her plant each week. The firstt week, the plant's height measured 2.65 Decimeters. During the secon
Evgesh-ka [11]

Answer:

3.35 decimeter.

Step-by-step explanation:

We have been given that the first week, the plant's height measured 2.65 Decimeters. During the second week, Tania''s plant grew 0.7 Decimeter.

To find the height of Tania's plant at the end of second we will add 0.7 to 2.65.

\text{The length of Tania's plant at the end of 2nd week}=2.65+0.7

\text{The length of Tania's plant at the end of 2nd week}=3.35

Therefore, Tania's plant was 3.35 decimeter tall at the end of 2nd week


3 0
3 years ago
What is the equation of the sequence -2,-8,-32,-128
Luba_88 [7]

Answer:

I’m. Not sure

Step-by-step explanation:

But u can try to see how each number goes to each pattern like -2 to -8 is to add -6

3 0
3 years ago
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