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
Stolb23 [73]
3 years ago
14

when kara and Lauren add their ages, the sum is 20 when they multiply their ages, the product is 99 what is difference in their

ages?
Mathematics
1 answer:
Ksju [112]3 years ago
8 0
X+y=20
xy=99
Let a+b be denoted a,b
20 = 1,19 2,18 3,17 4,16 5,15, 6,14 7,13 8,12 (9,11) ..Stop
99=3^2*11
Thus the ages are 11 and 9 with a difference of 2.
You might be interested in
What is 0.25% of 30?
creativ13 [48]

Answer:

0.075

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
6.4 x 1.2 show your work
zimovet [89]

Answer:

7.68

Step-by-step explanation:

8 0
3 years ago
A fruit company has 20% returns in periods of normal rainfall and -3% returns in droughts. The probability of normal rainfall is
WARRIOR [948]

Answer:

E(x) = 10.8\% \\\\

The fruit company’s expected returns are 10.8%

Step-by-step explanation:

The expected returns of the fruit company is given by

E(x) =\sum (x \cdot P(x)) \\\\

For the given case,

Returns in normal rainfall = x₁ = 20% = 0.20

Returns in drought = x₂ = -3% = -0.03

Probability of normal rainfall = P(x₁) = 60% = 0.60

Probability of drought = P(x₂) = 40% = 0.40

So, the expected value of returns is

E(x) = x_1 \cdot P(x_1)  + x_2 \cdot P(x_2)  \\\\E(x) = 0.20 \cdot 0.60  - 0.03 \cdot 0.40  \\\\E(x) = 0.12 - 0.012 \\\\E(x) = 0.108 \\\\E(x) = 10.8\% \\\\

Therefore, the fruit company’s expected returns are 10.8%

7 0
3 years ago
11 = 7 + 4x is what is what is what
Law Incorporation [45]

Answer:

x = 1

Step-by-step explanation:

11 = 7 + 4x

Subtract 7 from both sides

11-7 = 7-7 + 4x

4 = 4x

Divide 4 from both sides

4/4 = 4x/4

1 = x

x = 1

Check:

11 = 7 +4(1)

11 = 7+4

11 = 11

Hope this helps. Have a nice day.

6 0
3 years ago
What is the slope and y-intercept -4x+2y=-2
natka813 [3]

Answer:

Slope: 2

Y-intercept:  (0, -1) or - 1

Step-by-step explanation:

Given the linear equation, -4x + 2y = -2:

Transform the given equation into its slope-intercept form, y = mx + b:

-4x + 2y = -2

Add 4x to both sides:

-4x + 4x + 2y = 4x - 2

2y = 4x - 2

Divide both sides by 2 to isolate y:

\frac{2y}{2} = \frac{4x - 2}{2}

y = 2x - 1 ⇒ This is the slope-intercept form where the slope, m = 2, and the y-intercept is (0, -1).

8 0
2 years ago
Other questions:
  • What is the height of the cylinder below?<br>8 inches<br>11 inches<br>16 inches<br>22 inches<br>​
    5·2 answers
  • Please help me with range
    11·2 answers
  • I think its 2, 150 but just making sure.
    13·1 answer
  • PLEASE HURRY WILL GIVE BRAINLIEST A truck can be rented from Company A for $90 a day plus $0.30 per mile. Company B charges $70
    7·1 answer
  • Find the value of x help plz​
    5·2 answers
  • Two numbers total 43 and have a difference of 11 Find the two numbers.
    14·1 answer
  • haley puts these 12 tiles in a bag and shakes the bag.Then she picks a tile at random.What is the probability she picks a tile t
    6·1 answer
  • A house on the market was valued at $318,000. After several years, the value decreased by 9%. By how much did the house's value
    13·1 answer
  • Using the quadratic formula, which of the following are the zeros of the
    7·2 answers
  • Write an expression to describe the situation.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!