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
Helen [10]
3 years ago
6

I don't know what to do ?

Mathematics
2 answers:
ladessa [460]3 years ago
5 0
Let x = mary's age
let 3x = mike's age

3x=2x+4    subtract 2x from both sides
x=4

Mary is 4 years old.
Brainliest would be appreciated :)

Yuri [45]3 years ago
3 0
Enable M = Mary's age now So Mike's age is 3M 3M + 4 = 2 (M + 4) = 2M + 8 Now, subtract 2M from the two factors. then you definitely have: M + 4 = 8 or M = 4 examine: Mike is now 12. In 4 years, Mary would be 8 and Mike would be sixteen.
You might be interested in
At a manufacturing plant where switches are made, it is a known fact that 2% of all switches are defective. If two switches are
olchik [2.2K]

Answer:

The probability that exactly one switch is good is

P(x) =0.0392

Step-by-step explanation:

The probability that a switch is defective is:

P(D) = \frac{2}{100} =0.02

The probability that a switch is not defective is

P(D') = 1-P(D)=0.98

Therefore, if two switches are selected, the probability that exactly 1 is good is:

P(1=1)=P (D) P (D ') + P (D') P (D)

P(x)=(0.02)(0.98) + (0.98)(0.02)

P(x) =0.0392

6 0
3 years ago
Read 2 more answers
Help show work pleaeee
Inga [223]

SA = 2\pi rh+2\pir^2

1. Find the radius.

R = 1/2D

6 x 1/2 = 3

R = 3

2. Plug them in.

SA 2(3.14)(3)(7) + 2(3.14)(3^2)

3. Solve

3 x 7 = 21

21 x 3.14 = 65.94

65.94 x 2 = 131. 88

3^2 = 9

9 x 3.14 = 28.26

28.26 x 2 = 56.52

4. Add them together.

131.88 + 56.52 = 188.4

Answer: 188.4 square millimeters

7 0
3 years ago
Read 2 more answers
What is the horizontal asymptote of the function f(x)= -2x/x+1
daser333 [38]

<u>Answer:</u>

-2

<u>Step-by-step explanation:</u>

We have been given a function f(x)=\frac{-2x}{x+1} and we are asked to find the horizontal asymptote of our given function.

Recalling the rules for a horizontal asymptote:

1. If the numerator and denominator have equal degree, the horizontal asymptote will be the ratio of the leading coefficients.

2. If the polynomial of denominator has larger degree than the numerator, then the horizontal asymptote will be the x-axis or y=0.

3. If the polynomial of numerator has larger degree than denominator, then the function has no horizontal asymptote.

Here, the numerator and denominator are of the same degree. So the horizontal asymptote will be the ratio of the coefficients.

Horizontal asymptote = -\frac{2}{1} = -2

8 0
3 years ago
Which point is the reflection of point E across the y-axis ? What’s are it’s coordinates?
andriy [413]

Answer:

I need more info

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
The manager of a local ice cream shop wants to learn more about the distribution of the ages of his customers. After keeping tra
Scilla [17]
Ayo we need more information you know you can post pictures right?
7 0
2 years ago
Other questions:
  • ZAck bought a coat for $69.78. He paid with a $100.00 bill and received $26.73 in change. How much was the sales tax?
    13·1 answer
  • Sin155° = _____ sin25° sin(-25)° -sin25°
    10·1 answer
  • C=2m+d solve for m plz
    5·1 answer
  • What number is 11/5 of 20?
    7·1 answer
  • Answer for a,b,and c PLEASE!!!
    10·2 answers
  • Draw a histogram to represent the set of data
    15·1 answer
  • ASAP easy for anyone part 4
    14·1 answer
  • Pls help I need it badly ​
    7·1 answer
  • The diameter of an insect cell is 1.7 × 10–11 meter. Ariel wants to find the length of the radius of the cell. If she performs t
    5·1 answer
  • Square root 9x+7 + square root2x=7
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!