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juin [17]
3 years ago
5

I need help and I need explanation plz

Mathematics
1 answer:
zhuklara [117]3 years ago
6 0

Answer:

20 counters.

Step-by-step explanation:

50/200 or 1/4 of the counters have white paint on them.

That means you can expect 1/4 of the 80 counters pulled out to have white paint on them or 20 counters.

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Kendra has a painting canvas that is 20 inches wide by 37 inches high. She painted a red rose, which covered 50% of the canvas.
uysha [10]
The total area is:
 A = (20) * (37)
 A = 740 in ^ 2
 We can make the following rule of three:
 740in ^ 2 -----> 100%
 x --------------> 50%
 Clearing x we have:
 x = (50/100) * (740)
 x = 370 in ^ 2
 Answer:
 
the area of the canvas which was covered by the red rose was:
 
x = 370 in ^ 2
6 0
3 years ago
Find the value of a and b in x^2+2x=13
zheka24 [161]

Answer:

a =1  and b =2

Step-by-step explanation:

The standard quadratic is written in the form

ax^2 +bx+c =0

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8 0
3 years ago
Jori has 7 boxes of books,with each box holding the same number of books.he has126 books in all how many books are there per box
bazaltina [42]
Let b be the number of books in a box.  Then we can say that the total number of books is equal to the number of boxes times the number of books per box.

7b=126  divide both sides by 7

b=18

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7 0
3 years ago
Sinah bought some packs of gum. There were 8 sticks of gum in each pack. She gave 12 sticks of gum to manuela. This left sinah w
zhuklara [117]

Answer:

8g = 12 + 28

g = 5 packs

Step-by-step explanation:

Share of the sticks of gum

Manuela = 12 sticks

Sinah = 28 sticks

There are 8 sticks in each pack

g = number of packs of gum that sinah bought?

g × 8 sticks = 12 sticks + 28 sticks

8g = 40

Divide both sides by 8

g = 40 / 8

g = 5 packs

3 0
3 years ago
A new theater is being built for the city ballet. The balcony has 200 seats. The floor has 10 rows with x seats in each row. The
Andreyy89

Answer:

B

Step-by-step explanation:

Because I got it right

6 0
3 years ago
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