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motikmotik
3 years ago
12

I need help please????

Mathematics
2 answers:
UkoKoshka [18]3 years ago
7 0

Answer:

The correct answer is option B.  19

Step-by-step explanation:

Fro the figure we can see that,

the number of students across number of answers

<u>To find students correctly answered 30 more questions</u>

From the figure we get,

The number of students answered 30 to 40 questions = 10

The number of students answered 40 to 50 questions = 9

Therefore the  students correctly answered 30 more questions = 10 + 9 = 19

The correct answer is option B.  19

sergeinik [125]3 years ago
4 0

Answer:

the answer is 19

Step-by-step explanation:

30< on the graph is shown on the scores line, the kids that had scores 30< were totaled to 10+9  which equals 19

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sammy [17]

Answer:

4. 1/25

5. 1/16

6. 2/9

7. 5/567

8. 1/40

9. 2/175

10. 1/30

11. 2/5

12. 9/8

13. 4/3

14. 1

Step-by-step explanation:

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4 0
3 years ago
Nate is 10/9/12 years old. How old will he be in 2/1/12 more years
EastWind [94]

The answer is B. 10 9/12 + 2 1/12= 12 10/12. 12÷2=6 10÷2=5 making the answer 12 5/6
5 0
3 years ago
Corey bought 2 1/2 liters of paint for$60<br> what was the cost per liter of paint.
hichkok12 [17]
2 1/2 is also 2.5, therefore to calculate each liter, just 60/2.5, so the answer is $24
8 0
3 years ago
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What are the solutions to the equation (x + 2)^2 = 49?
Mekhanik [1.2K]

Answer:

X= 5, -9

Step-by-step explanation:

(X+2)² =49

Expand the bracket,


(X+2) (X+2)= 49

Apply the distributive property;

X(X+2) +2 (X+2) =49

X²+2X+2X+4=49

X²+4X+4=49

Move 49 to the left side of the equation;

X²+4X+4-49=0

X²+4X-45=0

Apply Factorisation method;

Consider the form

a²+bx+c=0  

Find two numbers whose sum is equal to b and whose product is equal to c.
Comparing with our equation;

B =4 and C =45

We can use 9 and -5, this is because ;

9+(-5)=4 and 9*(-5)= 45.

Replace X +4X-45=0 with (X-5) (X+9)=0

Therefore;

X-5=0

X+9=0

Moving to the left side of the equation;

Therefore X= 5 and -9

8 0
3 years ago
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HELP! I NEED THIS ANWSERED NOW PLS! Which of the following terminating decimals is equivalent to Negative 1 and three-fourths?
Amiraneli [1.4K]

Answer:

A. -1.75

Step-by-step explanation:

- means negative, so -1. 1 quarter of 1 would be .25, 2 quarters would be .50, 3 quarters would be .75, and 4 quarters would be 1.0.

6 0
3 years ago
Read 2 more answers
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