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3 years ago

by what percent will a fraction change if its numerator is decreased by 75% and denominator is decreased by 50%

Mathematics

1 answer:

zubka84 [21]3 years ago

8 0

Answer:

50%

Step-by-step explanation:

first the numerator is decreased by 75% so its 0.25. the denominator is decreased by 50% so its 0.5. Then, we will divide 0.25 and 0.5 which equals 0.5. to find %, do 0.5*100 which equals 50%

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Does anyone know this?

Marrrta [24]

Answer:

f(-9) = 279

Step-by-step explanation:

f(x) = 4x^2 + 7x + 18

f(-9) = 4(-9)^2 +7(-9) + 18

= 4(81) - 63 + 18

= 324 - 63 + 18

= 279

8 0

3 years ago

Is y= 1/2x - 4 equal to 3x - 6y = 24

Readme [11.4K]

Answer:

$\fbox{\begin{minipage}{4em}Yes, it is\end{minipage}}$

Step-by-step explanation:

3x - 6y = 24

Divide both sides by 6:

(3/6)x - (6/6)y = 24/6

Simplify:

(1/2)x - y = 4

Move y to the right side, 4 to the left side, and change sign of y and 4:

(1/2)x - 4 = y

Rearrange both sides:

y= (1/2)x - 4

Hope this helps!

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3 years ago

Need help ASAP pls pls!!!!!!

Jobisdone [24]

Answer:

Step-by-step explanation:

the total games that Sara played =

14+18+28 = 60

4 0

3 years ago

Work out the number of sides tile A has. Both tile A and tile B are regular polygons

finlep [7]

Answer:

Step-by-step explanation:

since tile B is a regular polygon means it is an equilateral triangle. The angle inside B would be 60.

(360 - 60)/2 = 150 (interior angle of tile A)

180 - 150 = 30 (exterior angle of tile A)

therefore number of sides = 360 /30 = 12

8 0

3 years ago

Given that the triangles are similar, find the value of x. Find the length of NR. S T 40 60 R 2x-2 8

andrew-mc [135]

Answer:

NR = 12

Step-by-step explanation:

Given that both trjangles are similar, therefore, it follows that their corresponding side lengths would be proportional to each other. Thus:

$\frac{40}{8} = \frac{60}{2x - 2}$

$5 = \frac{60}{2x - 2}$

Cross multiply

$5(2x - 2) = 60$

$10x - 10 = 60$

$10x = 60 + 10$ (addition property of equality)

$10x = 70$

Divide both sides by 10

x = 7

✔️NR = 2x - 2

Plug in the value of x

NR = 2(7) - 2 = 14 - 2

NR = 12

6 0

3 years ago