1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
blondinia [14]
3 years ago
9

Suppose that 6 years ago, Alice was four times as old as Betty. In 4 years from now, Alice will only be three times as old as Be

tty. How old is Betty today.
Mathematics
1 answer:
N76 [4]3 years ago
5 0
4b=a then plus 10 to see if the age holds true to 3b=a in ten years. Then since the question is how old is she today? You must either add 6 to young age (of20) or minus 4 from the older (of 30).
So Betty would be 26 today.
You might be interested in
The equation 6x - 5y = 14 is written in standard form. Which point lies on
dimaraw [331]
Answer= H (-1, -4)

Explanation= 6(-1) - 5(-4) = 14
(-6) + (20) = 14
14=14 * it works !
GOODLUCK!
4 0
3 years ago
-3 17/20 as a decimal
alekssr [168]

Answer:

-3.85

-3 is a whole number, it comes before the decimal point.

17/20 is a fraction so it goes on the other side.

7 0
3 years ago
Please help as fast as possible.
ankoles [38]

Answer:

B 7.3

Step-by-step explanation:

1/4 times 24 is 24/4 which is 6 plus 1.3 is 7.3 your answer is B

Hope I helped :]

3 0
2 years ago
Read 2 more answers
Help me plss, number 2.​
Gnesinka [82]

Answer:

At (-2,0) gradient is -4 ; At (2,0) gradient is 4

Step-by-step explanation:

For this problem, we simply need to take the derivative of the function and evaluate when y = 0 (when crossing the x-axis).

y = x^2 - 4

y' = 2x

The function y = x^2 - 4 cross the x-axis when:

y = x^2 - 4

0 = x^2 - 4

4 = x^2

2 +/- = x

Hence, this curve crosses the x-axis twice, once at (-2,0) and again at (2,0).

The gradient at these points are as follows:

y' = 2(-2) = -4

y' = 2(2) = 4

Cheers.

3 0
3 years ago
What is the best approximation for the perimeter of a semicircle with a dimeter of 12cm?
taurus [48]
Answer is choice B: the circumference of a circle is the same as perimeter and is defined by πd (or pi times diameter) We can cut this in half because we are working with a semicircle: so we have 6π which approximates to the value in answer when using 3.14 for pi Woops: forgot to add the diameter of 12 so we would have 30.84
6 0
3 years ago
Other questions:
  • What is half of 12.5
    11·2 answers
  • 3 y - 14 equals 13what is the answer to 3y - 14 equals 13 ​
    11·2 answers
  • 45 POINTS <br>3/7w - 11= -4/7w <br>w=_<br>(please explain steps also)
    6·1 answer
  • Which statement is true?
    6·1 answer
  • Which side lengths form a right triangle?
    11·2 answers
  • Can someone plz help me?​
    11·2 answers
  • 2.) The Finish Line buys a pair of shoes wholesale for
    9·1 answer
  • What is the only graph below that has a Hamiliton Path?​
    6·1 answer
  • The value of X is units in length.
    15·1 answer
  • Eggs with defects in terms of the number of eggs they inspected as shown
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!