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myrzilka [38]
3 years ago
8

If x and y are positive real numbers, which expression is equivalent to the expression below?

Mathematics
1 answer:
Vikki [24]3 years ago
7 0

The answer is A.) 21x/^3y

Here is proof

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Students are given 3 minutes to complete each multiple-choice question on a test and 8 minutes for each free-response question.
weqwewe [10]

Answer:

8(15-m)

Step-by-step explanation:

By looking at the options, we can understand that the right one is 8(15-m), since we need to multiply the time by the number of question.

Also, we can check that result by arranging an equations usint the total time.

55 = 3m - 8(15-m)

55 = 3m - 120 + 8m

55 = 11m - 120

55 + 120 = 11m

175 = 11m

m = 175/11 = 15.91

55 = 3*15.91 - 8(15-15.91) = 47.73 - 120 + 127.28 = 55.01 ≈ 55

6 0
3 years ago
Choose the correct right-hand side to make the equation an identity.<br><br> cotx/secx=?
mojhsa [17]
Cot(x)sec(x) =
(cos(x)/sin(x))(1/cos(x))=
cos(x)/(sin(x)cos(x)) =
1/sin(x) =
csc(x)
7 0
3 years ago
Someone please help me on this and show work I need help I’ll give brainliest
irinina [24]
A.

F(10)= (10)^2-3(10)-5
F(10)=100-30-5
F(10)=65

B.

F(-3)=(-3)^2-3(-3)-5
F(-3)=9+9-5
F(-3)=13

C.

G(2)= -6(2)+1
G(2)= -12+1
G(2)=-11

D.

G(10)=-6(10)+1
G(10)= -60+1
G(10)= -59
8 0
3 years ago
9. One winter day, the temperature increased
Andru [333]

Answer: A~ 45

Step-by-step explanation:

8 0
3 years ago
Lucy was playing a card with two friends. They were playing with a deck of 21 cards. Lucy dealt 1/3 of the deck to each person.
Rama09 [41]
If each of them got 1/3 of the deck then they would each get 7 cards
8 0
3 years ago
Read 2 more answers
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