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3 years ago

Please help need answer quick

Mathematics

2 answers:

stellarik [79]3 years ago

6 0

Answer:

Step-by-step explanation:

The percentage of students gaining an A or B = 38 + 25 = 63%

Calculate 63% of the 32 students

63% = $\frac{63}{100}$ = 0.63, hence

0.63 × 32 ≈ 20

kenny6666 [7]3 years ago

4 0

Answer:

20 students

Step-by-step explanation:

The percentage of students scoring a B or A = 38 + 25 = 63%

We need to evaluate 63% of the 32 students who did the test

(63/100)*32 = 20.16

Therefore, approximately 20 students earned a B or higher

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Find the midpoint of the line segment with end coordinates of: (1,4) and (5,2)

poizon [28]

Midpoint formula: (x1+x2)/2, (y1+y2)/2
(1+5)/2 = 6/2 = 3 for x
(5+2)/2 = 7/2 = 3.5 for y
Midpoint: (3,3.5)

8 0

2 years ago

There are 162 magazines and books in a library. There are 54 more books

Strike441 [17]

Answer:

108 books.

Step-by-step explanation:

Let the number of magazines = m

Let the number of books = b

Given the following data;

Total number of m & b = 162

Translating the word problem into an algebraic equation, we have;

$b = m + 54$ ......equation 1

$m + b = 162$ ......equation 2

Substituting equation "1" into equation "2" we have;

$m + m + 54 = 162$

$2m + 54 = 162$

$2m = 162 - 54$

$2m = 108$

$m = \frac {108}{2}$

m = 54

Now to find the number of books;

$b = m + 54$

Substituting the value of "m" into the equation, we have;

$b = 54 + 54$

b = 108

Therefore, the total number of books in the library is 108 books.

7 0

3 years ago

I need help on case number 6

Feliz [49]

1/2 + 1/2 + 2/3 + 3/4 + 47/48 + 48/49 +49/50 = 5.35542517007

This decimal form is ≈ to 5 2/5

8 0

2 years ago

. You got 46 out of 65 questions right on your exam. What's your grade?

larisa86 [58]

Answer:

about like 8 /10

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Make y the subject of these equations. by² = d Jay = 6 ay - cy = d. cy - b) = y

allsm [11]

Answer:

See all the answers below.

Step-by-step explanation:

by² = d

Jay = 6

ay - cy = d.

cy - b) = y

Option A

by² = d

divide both side by b

y² = d/b

square both sides

y=√d/b

Option B

Jay = 6

Divide both sides by Ja

y= 6/Ja

Option C

ay - cy = d

y(a-c)=d

divide both sides by (a-c)

y= d/(a-c)

Option D

(cy - b) = y

y-cy=-b

y(1-c)=-b

y= -b/(1-c)

6 0

2 years ago