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Molodets [167]
3 years ago
8

PLEASE HELP AND PLEASE MAKE YOUR EXPLANATION DETAILED!!!

Mathematics
2 answers:
wel3 years ago
5 0

Answer:

18

Step-by-step explanation:

168 : 28 : : 108 : y

168 / 28 = 108 / y

6 = 108 / y

6 * y = 108

y = 108 / 6

y = 18

GREYUIT [131]3 years ago
5 0

Answer:

y = 18

Step-by-step explanation:

Given y varies directly as x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = 28 when x = 168

28 = 168k ( divide both sides by 168 )

\frac{28}{168} = k , that is

k = \frac{1}{6}

y = \frac{1}{6} x ← equation of variation

When x = 108 , then

y = \frac{1}{6} × 108 = 18

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At a pie cook-off, the judges ate 512 of Mary’s pie and 916 of Jerome’s pie.
IRISSAK [1]

Answer:

No

Step-by-step explanation:

I think you meant to put 5/12 ad 9/16 but in any case, even if it were 51/2 and 91/6 or anything else, the answer would be no

6 0
3 years ago
Find sin (A-B) if sin A = 4/5 with A between 90 and 180 and if cos B = 3/5 with B between 0 and 90
quester [9]

Answer:

sin(A-B) = 24/25

Step-by-step explanation:

The trig identity for the differnce of angles tells you ...

sin(A -B) = sin(A)cos(B) -sin(B)cos(A)

We are given that sin(A) = 4/5 in quadrant II, so cos(A) = -√(1-(4/5)^2) = -3/5.

And we are given that cos(B) = 3/5 in quadrant I, so sin(B) = 4/5.

Then ...

sin(A-B) = (4/5)(3/5) -(4/5)(-3/5) = 12/25 + 12/25 = 24/25

The desired sine is 24/25.

3 0
3 years ago
If Anna walled for 5 miles and then turned around and went back what is her displacement?
damaskus [11]
If she went back 5 miles than the displacement would be 0.

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3 0
3 years ago
10. Giselle invests $16,250 in an account that earns 4.25% interest, compounded continuously.
denis-greek [22]

Answer: <u>24 years</u>

Step-by-step explanation:

% • total = Answer

4.25% • $40,000 = Answer

.0425 • $40,000 = Answer

Answer = $1,700 per year

40,000 ÷ 1,700 = 23.5

<u>23.5 rounded to the nearest year is 24</u>

3 0
3 years ago
there are 2000 sheets of paper in 4 reams of paper.which of the following expresses the ratio of reams to paper?
antoniya [11.8K]
 -4:2000

 -2:1000

 -1:500

Hope this helped☺☺
4 0
3 years ago
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