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Wewaii [24]
3 years ago
6

John is x years old and his sister Mary is (5x-12) years old. Given that Mary is twice as old as John, write in terms of x an eq

uation connecting their ages and find their ages ​
Mathematics
1 answer:
jeka57 [31]3 years ago
3 0
Answer: x =4
Mary is 8 and John is 4

Explanation:
John = x
Mary = 5x - 12 or 2x

Solve for x

5x - 12 = 2x

-12 = -3x

X=4

Hope that helps!
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Math. please help me!!!
d1i1m1o1n [39]

Part A.

In this part we have to find the increasing interval .

Increasing interval is that interval where graph goes up. And from the graph we can say that the graph goes up in the interval

(-1,0)U (1, \infty)

And that's the increasing interval .

Part B.

Correct option is B

x and y intercepts

x intercept is the point where graph touches the x axis. And the graph touches the x axis at x=-1 and 1 .

So the x intercepts are

(-1,0) ,(1,0)

y intercepts are the point, where the graph touches or crosses the y axis.

Therefore the y intercept is (0,1)

So the correct option is D .

4 0
3 years ago
Read 2 more answers
Pls help with number 7,8,9 and 10
ella [17]

The answers to all the subparts of the multiplication problem are shown:

  • 185 × 24 = 4440
  • 1288 × 33 = 42504
  • 6301 × 47 = 296147
  • 3440 × 75 = 285000

<h3>What is multiplication?</h3>
  • Multiplying in math is the same as adding equal groups.
  • The number of items in the group grows as we multiply.
  • Parts of a multiplication issue include the product, the two factors, and the product.
  • The factors in the multiplication problem 6 x 9 = 54 are the numbers 6 and 9, and the product is the number 54.

So, multiplication of the numbers:

  • 185 × 24 = 4440
  • 1288 × 33 = 42504
  • 6301 × 47 = 296147
  • 3440 × 75 = 285000

(Refer to the images attached below for calculations)

Therefore, the answers to all the subparts of the multiplication problem are shown:

  • 185 × 24 = 4440
  • 1288 × 33 = 42504
  • 6301 × 47 = 296147
  • 3440 × 75 = 285000

Know more about multiplication here:

brainly.com/question/10873737

#SPJ13

7 0
1 year ago
Can someone help on this? <br> please
Novay_Z [31]

Answer:

3848.45cm^2

Step-by-step explanation:

3 0
3 years ago
A pizza cutter has an area of 64cm2. It turns 4 TIMES to cross a large pizza. What is the area of the pizza? Please SHOW your wo
laiz [17]
Well, I'm assuming you haven't had your question answered yet in these 58 minutes. I'm not 100% sure but I would think that you would do the reverse of the equation to find the area of a circle to find the radius of the pizza cutter. So you would find the radius using the equation A=\pi r r^{2} to figure out the RADIUS. THEN, you would plug in the radius into the equation C=\pir^{2} to figure out the circumference. Next, you would multiply the circumference by 4. This would give you the diameter of the pizza. Finally, you would plug in the diameter of the pizza into this equation: A=\pir^{2} to find the area of the pizza. I am pretty sure this would work and there's probably an easier way that I don't know about. Assuming you get this in time, good luck! :)

7 0
3 years ago
Amelia is 5 feet tall and casts a 4-foot shadow.
kobusy [5.1K]

Answer:

the answer is... Amelia is 5 feet tall and casts a 4-foot shadow.

A tree next to her casts a 12-foot shadow.

The two triangles formed are similar because the angle to the sun is the same.

Choose two equations that can be used to find the height, h, of the tree.

Step-by-step explanation:

hope it helps

8 0
3 years ago
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