Ask question

Ask question

All categories

3 years ago

7

Estimate the sum or difference 8/9 +4/7=

1 answer:

zhenek [66]3 years ago

7 0

Answer:

1 29/63

Step-by-step explanation:

To add fractions, find the LCD and then combine.

You might be interested in

PLEASE SHOW FULL SOLUTIONS! WILL MARK BRAINLIEST FOR THE BEST ANSWER! THANK YOU.

erastova [34]

Answer:

4a is s(50-30-20)

4b is 10

Step-by-step explanation:

Make Brainliest!

5 0

3 years ago

A picnic is attended by 3 senior citizens, 12 adults, and 4 teenagers. Write a ratio of:

timama [110]

A. 3:12, reduced is 1:4
b. 4:3
c. 12:19

6 0

3 years ago

Read 2 more answers

Find the average rate of change of f ( x ) = 3 x 2 − 9 on the interval [ 2 , b ] . Your answer will be an expression involving b

iVinArrow [24]

Answer:

$m = 3b+6$

Step-by-step explanation:

Given

$f(x)=3x^2 - 9$

Required

The average rate over $[2,b]$

Average rate (m) is calculated using:

$m = \frac{f(b) - f(a)}{b - a}$

Where

$[a,b] = [2,b]$

So, we have:

$m = \frac{f(b) - f(2)}{b - 2}$

Calculate f(b) and f(2)

$f(x)=3x^2 - 9$

$f(b)=3b^2 - 9$

$f(2)=3*2^2 - 9 = 12 - 9 = 3$

So, we have:

$m = \frac{f(b) - f(2)}{b - 2}$

$m = \frac{3b^2 - 9 - 3}{b - 2}$

$m = \frac{3b^2 - 12}{b - 2}$

Expand the numerator

$m = \frac{3b^2 + 6b-6b-12}{b - 2}$

Factorize

$m = \frac{b(3b + 6)-2(3b+6)}{b - 2}$

Factor out 3b + 6

$m = \frac{(b -2)(3b+6)}{b - 2}$

Cancel out b - 2

$m = 3b+6$

4 0

3 years ago

What’s the volume of a cylinder with a radius of 15 ft and a height of 22 ft

Sophie [7]

Answer:

V = 15550.88 ft³ right cylinder

5 0

4 years ago

Read 2 more answers

Find the 4th term in the sequence.

HACTEHA [7]

Answer:

29

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers