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Alik [6]
3 years ago
5

Enter the unknown value to make this statement true 20% of ? is 40

Mathematics
1 answer:
frosja888 [35]3 years ago
8 0
200.

Explanation:

20% of 100 is 20.

Or 20/100.

We can find the equivalent fraction to get to 40 as the numerator.

To get an equivalent fraction, we must multiply both numbers by the same amount

20 x 2 is 40
—
100 x 2 is 200

40/200 = 20%

Hope this helps!
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Three cyclists simultaneously start their movement from the same point at 7 am. Their routes take 10 minutes, 25 minutes and 15
Arisa [49]

Answer:

The 3 cyclists will meet at the starting point again after 150 minutes.

Step-by-step explanation:

Since they start at the same point but then take different times to each route, then to find the first time they will each meet at the starting point, we have to find the lowest common multiple (LCM).

Let's use prime factorization to get it.

Prime factorization of 10 = 2 × 5

Prime factorization of 15 = 3 × 5

Prime factorization of 25 = 5 × 5

Thus,super set = 2, 3, 5, 5

Thus,LCM = 2 × 3 × 5 × 5 = 150

Thus,the 3 cyclists will meet at the starting point again after 150 minutes.

4 0
3 years ago
What elements in domain has the image 5 under function f(x)= 3x+ 2?
bekas [8.4K]

Answer:

Step-by-step explanation:

hello

calculate x : 3x+2 =5

means : 3x+2-2 =5-2

3x = 3

so : x = 3/3 =1

1 is the  element in domain has the image 5 under function f(x)= 3x+ 2

7 0
2 years ago
Write (2x – 1) (3x – 1) in standard form.
omeli [17]

Answer:

6x^2-5x+1

Step-by-step explanation:

Use the foil method:

multiply 2x with 3x and -1.

then multiply -1 with 3x and -1

when multiplied, you should have gotten 2x×3x=6x^2, then 2x×-1, then -1×3x=-3x, then you put all of the answers in order from variables with exponents to normal variables to non variables

8 0
3 years ago
25. a(b)(-c), for a = 7, b = -2, c = 15​
Gennadij [26K]

Answer:

210

Step-by-step explanation:

a(b)(-c) (PLUG IN THE NUMBERS)

7(-2)(-15) (multiply 7*-2)

-14(-15) (multiply them together two negatives make a positive)

210

8 0
3 years ago
Read 2 more answers
Which role would result in a translation of two units left and three units up
VladimirAG [237]

The rule (x, y) ⇒ (x-2, y+3) will translate the way you want.

7 0
3 years ago
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