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nekit [7.7K]
3 years ago
10

There are

Mathematics
1 answer:
ehidna [41]3 years ago
4 0
Yesterday, 1/4 of 80 =20 gave their speeches, so there are 80-20=60 students left.
Today, 2/5 of 60=24 students gave their speeches, so there are 60-24=36 students who still haven't give their speeches
another way to think of it is 80*(1- 1/4)*(1- 2/5)=80*(3/4)*(3/5)=36
You might be interested in
Boris used 2/3/5 gallons of gas on Friday and 5/1/4 gallons of gas on saturday, how many gallons did he use on the two days comb
Dafna11 [192]

Answer:

Exact form: 157/20

Decimal Form: 7.85

Mixed Number Form: 7/17/20

Step-by-step explanation:

6 0
3 years ago
Seven more than the quotient of a number and 2 is -4
Rzqust [24]

Answer:

x/2 + 7 = -4

Step-by-step explanation:

7 more just means plus 7

a quotient of a number and blank basically is 'a number' (usually x) over a the number given if that makes sense. so in our scenario its x/2

'is' basically means is equal to

put it all together and you get x/2 + 7 = -4

hope this helps <3

5 0
3 years ago
Solve. −3.5=−4.6x−5.1 Enter your answer as a fraction in simplest form in the box.
Law Incorporation [45]

Answer:

<u>x = 8/23</u>

Step-by-step explanation:

<u>Adding 3.5 to each side</u>

  • -3.5 + 3.5 = -4.6x - 5.1 + 3.5
  • -4.6x - 1.6 = 0

<u>Adding 4.6x to each side</u>

  • -4.6x - 1.6 + 4.6x = 0 + 4.6x
  • 4.6x = -1.6

<u>Dividing each side by 4.6</u>

  • 4.6x/4.6 = -1.6/4.6
  • <u>x = 8/23</u>
7 0
2 years ago
An urn contains 12 balls, five of which are red. Selection of a red ball is desired and is therefore considered to be a success.
SVEN [57.7K]

Answer:

2/10

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Linda earns $ 617 each week working her full time job.
slava [35]

Answer:

$95.00

Step-by-step explanation:

gross=$617

tax deduction 15.4%

=617×0.154

=$95.00

8 0
2 years ago
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