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Ilya [14]
2 years ago
14

Help please asap!!! Thx

Mathematics
1 answer:
Lostsunrise [7]2 years ago
8 0

Answer:

Step-by-step explanation:

<u><em># 21.</em></u>

\frac{8}{15} ÷ ( - 0.35 ) = - \frac{8}{15} ÷ \frac{35}{100} = - \frac{8}{15} ÷ \frac{7}{20} = - \frac{8}{15} × \frac{20}{7} = - \frac{32}{21} <em>(B).</em>

<u><em># 22.</em></u>

( 3\frac{1}{2} - 9\frac{3}{4} ) ÷ ( - 2.5 )

3\frac{1}{2} = 3\frac{5}{10} = 3.5

9\frac{3}{4} = 9\frac{3*25}{4*25} = 9\frac{75}{100} = 9.75

( 3.5 - 9.75 ) ÷ ( - 2.5 ) = ( - 6.25 ) ÷ ( - 2.5 ) = 2.5 <em>(D).</em>

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3. Given the following similar triangles. Find the values of variables and label all the unknown angles
astraxan [27]

Answer:

The answer to your question is x = 6 and y = 9

Step-by-step explanation:

Data

AB = x                     DF = 18

BC = 5                     FE = 15

AC = 3                     DE = y

Process

1.- Find y

Use proportions to find it

                 DE/FE = AC/BC

Substitution

                 y/15 = 3/5

Solve for y

                  y = 15(3/5)

                  y = 45/5

                  y = 9

2.- Find x

                AB/DF = BC/FE

Substitution

                x/18 = 5/15

Solve for x

                x = 18(5/15)

                x = 90/15

                x = 6

8 0
3 years ago
On any particular Saturday evening, the probability that Hannah will go to the movies and go for a coffee is 1/3. The probabilit
pochemuha

Answer:

7/20

Step-by-step explanation:

7 0
3 years ago
PLEASE HELP ME PLEASE HELP ASAP PLEASE HELP PLEASE AND THANK YOU
Allushta [10]

Answer:

y =mx + c

7 = 5/2 (-2) + c

7 = - 5 + c

c = 7 + 5

c = 12

Therefore, y = 5/2x + 12

Multiply through by 2

2y = 5x + 24

You're welcome

7 0
3 years ago
FREEEEEEEEEEEEEEEEEEEEEEEE POINTS!!!!!!!!!!!!!
muminat
Bless ur kind soul :o
4 0
3 years ago
How would I do this
Solnce55 [7]

Answer:

  the ramp must be lowered

Step-by-step explanation:

Use the definition of the sine function to find the height of a ramp that is 8°.

  Sine = Opposite/Hypotenuse

  sin(8°) = height/8

  height = 8×sin(8°) = 1.11

The height Nate's dad allows is 1.11 feet. At 1.5 feet, the ramp is too high.

The ramp must be lowered.

4 0
3 years ago
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