2 years ago

Evaluate ab for a = 2 3/4 and b = 4/5.

Mathematics

2 answers:

ikadub [295]2 years ago

7 0

Answer:7 1/2

Step-by-step explanation:

Crazy boy [7]2 years ago

6 0

Rewrite a as an improper fraction:

2 3/4 = 11/4

Now you have 11/4 x 4/5

Multiply the two top numbers together and the two bottom numbers together.

11x4 / 4x5 = 44/20 now rewrite as 2 4/20 which can simplify to 2 1/5

You might be interested in

Look at the two temperatures. How much have they changed by?<br> 4 degrees to -10 degrees

aliina [53]

Answer:

$\displaystyle 14$

Step-by-step explanation:

we are given two temperature

4 degrees and -10 degrees

since it says to figure out the changed

substract

$\displaystyle 4 - ( - 10)$

remove parentheses and change its sign

$\displaystyle 4 + 10$

simplify addition:

$\displaystyle 14$

and we are done!

4 0

2 years ago

Read 2 more answers

If your car can travel 20 miles on 1 gallon of fuel how many litres were used to travel 130 miles? Step by step

Bezzdna [24]

Answer:2600 Gallons

Step-by-step explanation: You first have to take 130 and times it by 20 then times it by 1. make sure you add labels

3 0

2 years ago

Write a two step equation that has -5 as it solution.

Sonbull [250]

Answer:

$x^2 + 10x + 25 = 0$

Step-by-step explanation:

$x^2 + 10x + 25 = 0$

$(x + 5)^2 = 0$

$x = -5$

8 0

2 years ago

ANSWER QUICK PLZ

musickatia [10]

A. 60(2/3) + 35(7/10) + 45(5/6) = $102.00

b. 60 + 35 + 45 = 140 = original price
140 - 102 = $30 saved

c. 102/140 = .7286 * 100 = 72.86 % (not sure how you need it rounded)

3 0

2 years ago

Read 2 more answers

If it took 2 hours to clean 4 houses how many houses could be cleaned in 3 hours

leva [86]

Answer:

Step-by-step explanation:

it would be six in one hour he would clean 2 houses in two 4 houses then in three it would be six

8 0

3 years ago

Read 2 more answers