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NNADVOKAT [17]
3 years ago
10

Another math question :)

Mathematics
2 answers:
mart [117]3 years ago
5 0

Lets x = Mary's age

Emily is there years older than twice her sister Mary's age = 2x + 3

Sum of both is less than 30:

x + 2x + 3 < 30

Solve for x

3x + 3 < 30

3x < 27

x < 9

Mary's age = 9

Inequality represents Mary's possible age:

0 < x < 9

Answer is the second one

0 < x < 9

Read more on Brainly.com - brainly.com/question/10770846#readmore

Travka [436]3 years ago
4 0

Lets x = Mary's age

Emily is there years older than twice her sister Mary's age = 2x + 3

Sum of both is less than 30:

x + 2x + 3 < 30

Solve for x

3x + 3 < 30

3x < 27

x < 9

Mary's age = 9

Inequality represents Mary's possible age:

0 < x < 9

Answer is the second one

0 < x < 9


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What is the y-intercept of the exponential function? f(x)=−32(2)x−3+3 Enter your answer in the box.
Bogdan [553]

y-intercept for x = 0.

Substitute x = 0 to the equation of the function:

f(x)=-32(2)^{x-3}+3\\\\f(0)=-32(2)^{0-3}+3=-32(2)^{-3}+3=-32\cdot\dfrac{1}{2^3}+3=-32\cdot\dfrac{1}{8}+3\\\\=-4+3=-1\\\\Answer:\ \boxed{y-intercept=-1\to(0,\ -1)}

6 0
3 years ago
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Please help....And please show steps..
MrRissso [65]

Answer:

1476:1845

Step-by-step explanation:

4+5=9

4÷9 ×3321

And

5÷9=3321

1476:1845

4 0
3 years ago
How do you find the surface area and volume of a cylinder ​
galina1969 [7]
<h2>Answer:</h2>

The surface area of a shape is the sum of the area of all of its faces. To find the area of a cylinder, you need to find the area of its bases and add that to the area of its outer wall. The formula for finding the area of a cylinder is A = 2πr2 + 2πrh.

<h2>Step-by-step explanation:</h2>
  • Surface area of a cylinder = 2πr 2 + 2πrh
  • Volume of a cylinder = πr 2 h
  • You need to know the radius and height to figure both the volume and surface area of a cylinder.
  • Answers for volume problems should always be in cubic units.
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5 0
2 years ago
Read 2 more answers
What is the value of the underlined digit 24 the 2 is underlined?
zhannawk [14.2K]

Answer:

20

Step-by-step explanation:

ones= 1

tens= 10

Hundreds= 100

The difference between ones and tens is the 0. ones=1. tens=10

<u>2</u>4

The 2 is in the beginning so its the 10's place. The 4 is the second number so its in the ones place

3 0
3 years ago
Please Help Thanks so much for the help
boyakko [2]

Answer:

The answer is 10

Step-by-step explanation:

7 0
3 years ago
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