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mylen [45]
3 years ago
8

I need help with them Please some one help

Mathematics
1 answer:
Aleksandr [31]3 years ago
6 0
8 / 32 x 100 = 25%
answer: 25% students went on a trip

30/60 x 100 = 50%
answer: he spent 50% of his money

40 - 10 = 30 candies after gave away 10

10/40 x 100 = 25%
answer: 25% of candies she gave away

book 300 pages
she read 75 pages
75/300 x 100 = 25%

answer: she read 25% of the book




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45 POINTS!<br><br> PLEASE HELPPPPPPPPPPPPPP!
VMariaS [17]

Answer:

This is a direct variation where the constant of variation is 5/9

Step-by-step explanation:

The equation for direct variation is y = kx

5x-9y =0

Lets try to get this equation in the above form

Add 9y to each side

5x-9y +9y = 9y

5x = 9y

Divide each side by 9

5/9 x = 9y/9

5/9x = y

This is in the form y = k x where k =5/9

7 0
3 years ago
Factor x^2-5x-24 i need help to figure this out
Mrac [35]

Answer:

(x-8)(x+3)

Step-by-step explanation:

1) Find out what are the factors of the constant?

2) Which of those add to equal the coefficient before the x value?

In this particular equation, we have the constant being 24. The first two factors that come to mind are 6 and 4, and 8 and 3. Since it is -24, we need one of these numbers to be negative.

Let's look at our "b" value, or the coefficient behind the x value, 5. Looking at our factors and thinking of addition (since one of them must be negative, it will most likely be subtraction instead of addition) I can see that

8+ −3=5

which is one of the factors of -24.

This means that we can factor our equation using these numbers, getting us the following:

(x−3)(x+8)

Hope this helped!

3 0
3 years ago
HELP ASAP PLEASE.
ValentinkaMS [17]

Answer:

pls give brainlist

Step-by-step explanation:

a. \frac{50 blocks (L)}{9 blocks(W)\\}  50 x 9 = 450. A=450

b. I can scale the unit rate of the area given above and largen the area of the map. Ex. \frac{7}{3}=\frac{21}{6} <---(scaled by 2)

Then we can enlarge it however we want so,

\frac{21}{6} = \frac{42}{12}  <--(scaled by 2 once more)

If the statement above is true then we can scale times 4.

\frac{7}{3}= \frac{42}{12}\\ <---(scaled by 4)

A= \frac{42}{12\\}

all i can give u at the moment , if u go on M a t h w a y it can help

5 0
3 years ago
Read 2 more answers
Plsss help it due today I don’t understand how to do this plssss don’t just take the points
tensa zangetsu [6.8K]

Answer:

d a m i dont even know this

Step-by-step explanation:

4 0
3 years ago
Calculate the perimeter
evablogger [386]

Answer:

72

Step-by-step explanation:

You use Pythagorean Theorem to to find the missing side which in this case is 6 and since and then from there you just add

5 0
3 years ago
Read 2 more answers
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