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2 years ago

Heres another math question! Please no links, and dont answer if you dont have an answer or I will report!

Mathematics

1 answer:

dsp732 years ago

3 0

The answer is subtract 5 from both sides :) by doing this, the equation becomes x= 7-5, isolating the variable (x) hope this helps!! <3

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Please help me with this, I will give brainliest.

defon

Answer:

5.9 or 5.85 unrounded

8 0

1 year ago

7x + 2y + 5 - 5x + Oy - 1 Simplify expresson

frozen [14]

Answer:

To do this you have to combine like terms. For example, 7x and -5x.

3 0

3 years ago

Pump 1 can empty a pool in 8 hours while Pump 2 can empty the same pool in 9 hours. If the two pumps worked together, how long w

yan [13]

Rate of pump A: 1/8 of a pool per hour
Rate of pump B: 1/9 of a pool per hour
Combined rate: 1/8+1/9 = 17/72 +1/9 = 25/72

So if they work together, the two pumps have a combined rate of 25/72 of a pool per hour (i.e in one hour, the two pumps will empty 25/72 of the pool)

But we want to empty ONE pool (not 25/72 of one). So we need to multiply 25/72 by some number x to get 1.

Now solve for x
x=2.88
It will take the two pumps 2.88 hours to empty the pool.
2 hours 52 minutes 50 seconds

7 0

2 years ago

F(x) = 2x4 – 17x3 + 35x2 + 9x - 45 can this be factored?

gizmo_the_mogwai [7]

The answer is Yes, you can factor this equation.

5 0

2 years ago

a) How many significant figures are in the numbers 99 and 100? (b) If the uncertainty in each number is 1, what is the percent u

levacccp [35]

Answer:

2, 3

1.01, 1

Percentage uncertainty

Step-by-step explanation:

a) The significant figures in the number 99 is 2

The significant figures in the number 100 is 3

b) Uncertainty in each of the numbers for both the numbers is 1

Percentage uncertainty

$\text{Percentage uncertainty}=\frac{\text{Uncertainty}}{Value}\times 100 \\\Rightarrow \text{Percentage uncertainty}=\frac{1}{99}\times 100=1.01$

Percentage uncertainty = 1.01

100

$\text{Percentage uncertainty}=\frac{\text{Uncertainty}}{Value}\times 100 \\\Rightarrow \text{Percentage uncertainty}=\frac{1}{100}\times 100=1$

Percentage uncertainty = 1

c) Percentage uncertainty is a better way to express the numbers as the significant figures do not show the actual value of the numbers.

6 0

3 years ago