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DanielleElmas [232]
3 years ago
10

Which is a composite number? 81,41,71,61

Mathematics
1 answer:
KATRIN_1 [288]3 years ago
5 0

Answer:

81

hope this helps:)

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Adam is 159 centimeters tall and casts a shadow 105 centimeters in height. If Cara is 140 centimeters tall, how many centimeters
vodomira [7]

Answer:

The answer to your question is 12.55 cm

Step-by-step explanation:

Data

Adam                                  Cara

height = 159 cm                  height = 140 cm

shadow = 105 cm                shadow = x

Process

1.- To solve this problem use the Thales' theorem

         Cara's shadow / Cara's height = Adam's shadow / Adam's height

- Substitution

                                     x / 140 = 105 / 159

-Solve for x

                                     x = 105 (140) / 159

-Simplification

                                     x = 14700 / 159

                                     x = 92.45 cm

Cara's shadow is 92.45 cm long.

2.- If both shadows are in line, then Cara must walk forward

                105 - 92.45 cm

                12.55 cm

             

4 0
3 years ago
A middle school has 470 students. Regina surveys a random sample of 40 students and finds that 28 have cell phones. How many stu
Dmitry [639]
So from that i think the formula would be
\frac{x}{470}  =  \frac{28}{40}
so then you find "x" by multiplying 470 x 28 which equals 13,160. Then you divide 13,160 by 40 which equals 329.
X=329
329 students are likely to have phones

4 0
3 years ago
Read 2 more answers
Figure PQRS is a parallelogram. The expressions represent the measures of the angles in degrees.
marta [7]
I hope this helps you



Q and R complimentary



6x+20+2x=180



8x=160



x=20
5 0
4 years ago
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Carlos has decided to go on a diet to bulk up. He wants to eat at least 350 grams of carbohydrates a day and at least 224 grams
Semmy [17]
<span>70 grams of fat is pretty high, so we can just guess and check


5 diet packs of Bulking Up, 1 of Bodybuilding Fast
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7 0
3 years ago
Can someone give me the correct solution to the inequality of 3x&lt;-21?
Slav-nsk [51]

Answer:

x < -7

Step-by-step explanation:

3x < -21

<u>Step 1:  Divide both sides by 3</u>

3x < -21

3x / 3 < -21 / 3

x < -7

Answer: x < -7

8 0
3 years ago
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