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Bogdan [553]
3 years ago
12

(x) 3 5 7 (y) 7 11 15 Find x, when y = 21

Mathematics
1 answer:
solniwko [45]3 years ago
3 0

Answer:

x = 10

Step-by-step explanation:

y = 2x + 1

21 = 2x + 1

21 - 1 = 2x

2x = 20

x = 10

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16. A "stone" is an old unit of weight used
Musya8 [376]

Answer:

560 pounds

Step-by-step explanation:

1 stone=14 pounds

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4 0
3 years ago
What is the value of a in the equation 5a -10b = 45 when b = 3
leva [86]
Salutations!

5a-10b = 45

value of b = 3

Multiply 10 and 3

10*3=30

Now, you can solve the equation --

5a-30=45

separate the variables aside, and the numbers aside.

5a=45 +30

5a=75

a=75/5

a=15

Hope I helped (:

Have a great day!
6 0
3 years ago
Hi I really need help with my math questions because I am on the edge of failing math class please help me out thank you!
Troyanec [42]

survey every employee who works in the store

Step-by-step explanation:

7 0
3 years ago
Plz read and answerrrrrrrrrrr
natulia [17]

Answer:

16.7%.

Step-by-step explanation:

There are initially 24 + 15 + 8 = 47 pencils in the bag.

Take a pencil out of this bag of 47 pencils. 15 out of the 47 pencils blue. Let A represent the event of getting a blue pencil on the first pick. The probability of getting a blue pencil is:

\displaystyle P(A) = \frac{15}{47}.

There are now 47 - 1 = 46 pencils left in the bag. However, given that the first pencil removed from the bag is blue, the number of red pencils in the bag will still be 24. Take another pencil out of this bag of 46 pencils. Let B represent the event of getting a red pencil on the second pick. The possibility that the second pencil is red given that the first pencil is blue will be:

\displaystyle P(B|A) = \frac{24}{46}.

The question is asking for the possibility that the first pencil is blue and the second pencil is red. That is:

\displaystyle P(A\cap B) = P(A) \cdot P(B|A) = \frac{15}{47}\times \frac{24}{46} = 0.166512 \approx 16.7\%.

5 0
4 years ago
What is the speed of a horse that runs a distance of 2,592 meters in 144 seconds? ____meters
horsena [70]

Answer: 18 meters/s

Step-by-step explanation: Divide meters by seconds to find out how many meters the horse traveled per second.

4 0
3 years ago
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