Ask question

Ask question

All categories

3 years ago

14

Maria spend 5 hours studying and earned a 90 on her exam. If you want to score a 81, how much time do you need to spend studying

?

1 answer:

Oliga [24]3 years ago

7 0

Answer:

4hrs 30 mins

Step-by-step explanation:

5hrs-90

x-81

cross multiplying gives us

405-90x then dividing through made x=4.5 which is = 4hrs 30mins

You might be interested in

a recipe includes 8 cups of flour and two third cups of shortening. write the ratio to the amount of flour to the amount of shor

Paul [167]

8:2/3 because you can't go lower than 2/3

8 0

2 years ago

Can somebody help me find the perimeter of this figure?

lbvjy [14]

Answer: P = 64in,

Step-by-step explanation: P = 17 + 13 + 25 + 9

3 0

3 years ago

Please help me with this because i don’t understand stand this

Tamiku [17]

Note: complementary angles are two angles whose sum is 90⁰

5 0

2 years ago

Read 2 more answers

5,-1 over y axis helpppppppppppppppppppp

guapka [62]

Answer:

????

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

How would I write three times a number plus 5 times a number +4 is 196 as an equation

Yuki888 [10]

Answer:

$number = x \\ then \: 3x + 5x + 4 = 196 \\ = 8x + 4 = 196 \\ 8x = 192 \\ x = \frac{192}{8} \\ x = 24 \\ thank \: you$

3 0

3 years ago