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3 years ago

SOMEONE PLEASE HELP ME ASAP!! PLEASE TELL ME HOW YOU GOT YOUR ANSWERS. TY!!!

Mathematics

2 answers:

Bumek [7]3 years ago

3 0

Answer:

%25 decreased

Step-by-step explanation:

sp2606 [1]3 years ago

3 0

Answer:

25%

Step-by-step explanation:

The way I did it was by subtracting 45 from 60

60-45 = 15

After that, we divide 15 by 60

15/60 = 0.25

And to turn that into a percentage, multiply by 100.

0.25*100=25%

Checking the answer

And you can check by multiplying 25% to 60 and getting $15. So the discount is 25% or $15 dollars off. And just subtract 15 from 60 and you get 45, that is how you check your answer.

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Andy incorrectly solved an equation and showed his work.

antoniya [11.8K]

The answer is A. this is because when andy distributed the 5 from the outside of the parenthesis to the inside, he multiplied 5•5 to equal 10, and 5•5 is 25.

6 0

3 years ago

Perry’s pizza parlor sells pepperoni pizza for $1.15 per piece and plain pizza for $0.90. Paul purchased 37 pieces of pizza for

charle [14.2K]

Answer:

Paul purchased 23 pieces of pepperoni pizza

Step-by-step explanation:

Let pepperoni pizza pieces = x

and plain pizza pieces = y

So, the equations will be:

AS pepperoni pizza piece is sold for $1.15 and plain pizza is sold for $0.90 and Paul paid $39.05

1.15 x + 0.90 y = 39.05 eq(1)

Paul bought total 37 pieces of pizza so,

x + y = 37 eq(2)

Solving eq(1) and (2) we can find the pieces of pepperoni pizza bought by Paul.

Multiplying equation (2) with 1.15 and subtracting eq(1) and eq(2)

1.15 x + 0.90 y = 39.05

1.15 x + 1.15 y = 42.55

- - -

__________________

0 x - 0.25 y = -3.5

y = -3.5/-0.25

y = 14

Putting value of y in equation(2)

x+y = 37

x + 14 = 37

x = 37 - 14

x = 23

So, Paul purchased 23 pieces of pepperoni pizza as x represents pepperoni pizza pieces.

7 0

3 years ago

Of the 64 people who answered "yes" to a question, 6 were male. Of the 70 people that answered "no" to the question, 8 were male

kotegsom [21]

Answer:

The probability that the person answered "yes" or was male is 0.537

Step-by-step explanation:

The union of events is equivalent to the disjunction "or". Given two events A and B, the union of events, denoted by A∪B, is defined as the event formed by all the elements that are in A or B. That is, the event A∪B is verified when one of the two or both occurs.

Considering two events A and B with probabilities P (A) and P (B), respectively, the probability of their union is given by:

P(A∪B)= P(A) + P(B) - P(A∩B)

In this case:

A: the person answered "yes"
B: the person was male

So, being the probability calculated as the number of favorable cases divided by the total number of possible cases, then in this case it is known that the number of people who answered yes is 64, while the number of people who responded is not 70. Therefore , the total number of people who answered is equal to 64 + 70 = 134. So, the probability of answering yes is:

P(A)= $\frac{64}{134}$ =0.478

On the other hand, you know that out of 64 people who answered yes, the number of being male is 6. And out of 70 people who answered no, the number of being male is 8. So the probability that men answer yes is calculated as:

P (A∩B) = $\frac{6}{134}$ = 0.045

Finally, with the total number of men equal to 6 + 8 = 14, the probability of being male is:

P(B)= $\frac{14}{134}$ = 0.104

Then:

P(A∪B)= P(A) + P(B) - P(A∩B)

P(A∪B)= 0.478 + 0.104 - 0.045

Solving:

P(A∪B)= 0.537

The probability that the person answered "yes" or was male is 0.537

3 0

3 years ago

PLEASE HELP ME WITH THIS MATH QUESTION

damaskus [11]

WHERE IS THE QUESTION ??

4 0

3 years ago

HELP PLEASE!!!! I need the answer ASAP!!!!

astraxan [27]

9514 1404 393

Answer:

c. y = (x +2)² -5

Step-by-step explanation:

If you replace the squared term with zero, you are choosing the minimum of the remaining values. (A squared term cannot have a negative value.)

a) 3

b) 4

c) -5 . . . . the graph with the least possible y-value

d) 0

3 0

3 years ago