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3 years ago

How do I solve this question?

Mathematics

2 answers:

dybincka [34]3 years ago

8 0

18/100 is the awnser u need

Yuri [45]3 years ago

4 0

It's 18/100. The reduced / simplest form is 9/50 because you divide it by 2 since it's the GCS.

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Y = 2x2 - 3x - 20?

nikitadnepr [17]

2x² - 3x - 20

40
2 20
4 10
5 8

2x² - 8x 5x - 20
2x(x - 4) 5(x - 4)
(2x + 5) (x - 4)
2x + 5 = 0 x - 4 = 0
2x = -5 x = 4
x = -5/2
C) x = -2.5 and 4

4 0

3 years ago

Find what n equals 8(2n-2) = 4 - 4n (explanation please)

slavikrds [6]

Answer:

$\huge\boxed{n=1}$

Step-by-step explanation:

In order to find the value of n that satisfies this equation, we can perform a series of algebraic steps on it to solve for n.

$8(2n-2) = 4- 4n$
Distribute in the 8 on the left side:
$16n-16=4-4n$
Add 4n to both sides
$20n-16=4$
Add 16 to both sides
$20n = 20$
Divide both sides by 20
$n=1$

Therefore, n=1 is the value of n that satisfies this equation.

Hope this helped!

6 0

3 years ago

Read 2 more answers

Last week gas cost $2.89 per gallon. This week the price of gas is $1.99 per gallon. What is the approximate percent of increase

kap26 [50]

69% .................

3 0

4 years ago

Let xy=3 and dy/dt=4. Find dx/dt when x=5

tino4ka555 [31]

Answer:

xy = 3

d/dt(xy) = d/dt(3)

ydx/dt + xdy/dt = 0

y = 3/x so substitute 3/5 for y, 5 for x, and 5 for dy/dt; and solve for dx/dt.

3/5(dx/dt) + 5(5) = 0

3/5(dx/dt) = -25

dx/dt = -125/3

Step-by-step explanation:

this should be able to help you :)

4 0

3 years ago

-1/4a - 4 =4 what does a =

stellarik [79]

Answer:

a = -32

Step-by-step explanation:

-1/4a - 4 =4

Add 4 to each side

-1/4a - 4+4 =4+4

-1/4a = 8

Multiply each side by -4 to isolate a

-1/4 a * -4 = 8 *-4

a = -32

8 0

3 years ago