Approximately 9 out of 10 smokers began smoking before the age of 21. In a group of 400 smokers, about how many of them started before they reached their 21st birthday?

Answers

Answer 1

Answer: 400 / 10 = 40.

40
X 9
= 360

In a group of 400 smokers, about 360 of them started before they reached their 21st birthday.

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(x+3)y=14 which ordered pair is a solution to this equation ? A. 7,2 B 11,1 C 3,2 or D 5,2

Answers

The answer would be B.
Steps:
1. Take your X coordinate and plug it into your equation where the X is.
2. Take your Y coordinate and plug it into your equation where the Y is.
3. Distribute your Y to your numbers in the parenthesis.
4. Finally add the two numbers together.
5. See if you got the same answer on both sides of the equal sign.
Hope this helps! (:

(x + 3)y = 14

We just test each option.

A. x = 11, y = 1

(x + 3)y = 14

(7 + 3)*2

10*2

20 = 14 This is not correct, so the option is wrong.

B. x = 11, y = 1

(x + 3)y = 14

(11 + 3)*1

14*1

14 = 14 This is correct, so the option is the correct.

So option B is the correct one. No need to test the other options.

I hope this helps.

What is a scalene triangle?

Answers

A scalene triangle is simply a triangle with no congruent sides. This just means that no sides are equal and no angles are equal.

A scalene triangle is a triangle with no sides equal. Consequently, all the angles are not equal as well.

When all the sides are equal, it's called an equilateral triangle.
When two sides are equal, it's called an isosceles triangle.

Phillip watched a beach volleyball game from 1 P.M. to 1:20P.M. How many degrees did the minute hand turn?

Answers

Answer:

The minute hand covered 120 degrees

Step-by-step explanation:

Minute hand completes 1 round in 60 minutes

1 round = $360^(\circ)$

So, The minute hand covered degrees in 60 minutes = $360^(\circ)$

The minute hand covered degrees in 1 minute $= (360^(\circ))/(60^(\circ))$

Phillip watched a beach volleyball game from 1 P.M. to 1:20P.M.

So, He watched it for 20 minutes

So,The minute hand covered degrees in 20 minutes = $(360^(\circ))/(60^(\circ)) * 20 =120^(\circ)$

Hence The minute hand covered 120 degrees

Aaron gives an estimate of 2 for the quotient in a division problem his teacher says his estimate is reasonable if the divisor is 4 which number could be the dividend in Aaron's problem help pleaseeee

Answers

B because it's the closest to 8

Solve for x: ( sqrt 7) ^ 6x = 49 ^ (x-6)

Answers

$(√(7))^(6x)=49^(x-6) \n(7^(1)/(2))^(6x)=(7^2)^(x-6) \n7^{(1)/(2) * 6x}=7^(2(x-6)) \n7^(3x)=7^(2x-12) \n3x=2x-12 \n3x-2x=-12 \nx=-12$

The solution of x for the equation (√7)ˣ = 49ˣ⁻⁶ is,

⇒ x = 8

We have to given that,

An expression to simplify,

⇒ (√7)ˣ = 49ˣ⁻⁶

Now, We can simplify the expression for x as,

⇒ (√7)ˣ = 49ˣ⁻⁶

Since, 49 = 7² = (√7)⁴

Hence,

⇒ (√7)ˣ = (√7)⁴)ˣ⁻⁶

Apply the multiply rule in exponent,

⇒ (√7)ˣ = (√7)⁴ˣ⁻²⁴

By comparing,

⇒ x = 4x - 24

Solve for x,

⇒ x - 4x = - 24

⇒ - 3x = - 24

⇒ 3x = 24

⇒ x = 24 / 3

⇒ x = 8

Therefore, The solution of x for the equation (√7)ˣ = 49ˣ⁻⁶ is,

⇒ x = 8

Learn more about the equation visit:

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If carpet costs $12 per square yard. How much will it cost to carpet a room that is 180 square feet?

Answers

12$ per 3×3 if its square yard

so 180 ÷ 9 = 20

20×12$=240$

Answer:

12$ per 3×3

180 ÷ 9 = 20

20×$12=$240

Step-by-step explanation:

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F(x) = -7x - 1f() = -8

Mark and his friends order two pizzas of the same size the first pizza is cut into 6 slices of equal size the second pizza is cut into 4 slices of equal size each person plans to take 2 slices of pizza Mark concludes that he would get more pizza by taking 1 slice from each pizza instead of 2 slices from the first pizza explain why mark is correct

Movie tickets cost $6 for a child and $10 for an adult. A showing of a movie brought in $600 in ticket sales.

-4^2=? PLEASE ANSWER QUICKLY!!!!