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ASHA 777 [7]
3 years ago
8

There are 80 students in a speech contest.yesterday, 1/5 of then gave their speeches. Today, 5/8 of the remaining students gave

their speeches. How many students still haven't given their speeches
Mathematics
1 answer:
LekaFEV [45]3 years ago
3 0

Answer:

i dont f**cking know!! LOLLLLL GIVE ME BRAINLIEST PLEASE !!!!

Step-by-step explanation:

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Explain whether you would want a higher or lower interest rate.
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the product of x and 5.2 is 140. find the value of X

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Write an algebraic expression for the product of 2 and the sum of a<br> number and 6.
allsm [11]
2(x + 6) is what you’re looking for. Have a good day!
7 0
2 years ago
If y varies inversely asx, and y = 33 when x = 7 what is the constant and what is value of y when x=11?
allsm [11]

Answer:

We have that y = 21 when x = 11.

Step-by-step explanation:

We solve this question by proportions, using a rule of three.

Since they vary inversely, we apply the inverse rule of three, that is, with lateral multiplication instead of diagonal.

33 - 7

y - 11

So

11y = 33 -7

y - 11

Dividing both sides by 11

Y = 3 * 7 = 21

We have that y = 21 when x = 11.

7 0
2 years ago
Suppose Q and R are independent events. Find P(Q and R). P(Q) = 0.87, P(R) = 0.51
eimsori [14]

Answer:

0.4437

Step-by-step explanation:

First we will define independent events.

Two events are said to be independent when the occurrence of one event doesn't affect the probability of occurrence of second event.

Given

P(Q)=0.87

and  

P(R)=0.51

The probability of independent events is given as:

P(Q∩R)=P(Q)*P(R)

=0.87*0.51

=0.4437

So the probability of Q and R is 0.4437 ..  

5 0
3 years ago
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