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
Degger [83]
2 years ago
8

PLEASE HELP ME!! 30 points for right answer!

Mathematics
1 answer:
Reptile [31]2 years ago
6 0

Answer:

Given the system of equation:

g +h = 9                        ......[1]

8g + 7.5h = 71               ......[2]

We can write equation [1] as;

g = 9-h        ......[3]

Now, substitute equation [3] in [2] we get;

8(9-h) + 7.5h = 71

Using distributive property i,e a \cdot (b+c) = a\cdot b +a\cdot c.

72 - 8h +7.5h = 71

Combine like terms:

72 - 0.5 h = 71

Subtract 72 to both sides of an equation:

72 - 0.5 h -72 = 71-72

Simplify:

- 0.5 h = -1

Divide both sides by -0.5 we get;

\frac{-0.5h}{-0.5} = \frac{-1}{-0.5}

Simplify:

h = 2

Substitute the value of h =2 in equation [3] to solve for g;

g = 9 - 2 = 7

g = 7

Therefore, the solution for the given equation is :

g = 7 and h = 2

You might be interested in
yesterday the temperature was 7 degrees fahrenheit . Today the temperature is 0 degrees fahrenheit . What was the change in the
lawyer [7]

Answer:

-7

Step-by-step explanation:

HOPE THIS HELPS

7 0
2 years ago
Tom plants 3 seeds.
Rasek [7]

Answer:

A. 64/125

B. 124/125.

Step-by-step explanation:

A).  As the events ( germinate or not germinate) are independent we multiply the probabilities.

Prob(All seeds germinate) = 4/5*4/5*4/5 =  64/125.

B). Probability of at least one germinating =  1 - probability that none germinate

Probability of  1 seed not germinating = 1 -45 = 1/5.

So Prob(at least one germinating)

= 1 - (1/5 * 1/5 * 1/5)

= 1 - 1/125

= 124/125.

5 0
3 years ago
Find the volume of a right circular cone that has a height of 11.8 ft and a base with a radius of 16 ft. Round your answer to th
andreyandreev [35.5K]

Answer:

3161.8 cubic foot

Step-by-step explanation:

V = 1/3BH = 1/3πr²H

V = 1/3 x 3.14 x 16² x 11.8 = 3161.77

4 0
3 years ago
Slope = -3; y-intercept = 2
Stels [109]

Answer:

y= -3x+2

Step-by-step explanation:

6 0
2 years ago
Which phrase describes density? height of a point above sea level force pushing on an area or a surface amount of mass in a cert
hichkok12 [17]
The answer will be amount of mass in a certain volume .
5 0
2 years ago
Read 2 more answers
Other questions:
  • Solving slope (1,1/2),(3,2)
    10·1 answer
  • To remain a member of student council, a student must attend at least 3/4 of the activities. Joey attends 15 of the activities a
    9·2 answers
  • Which of the following is a possible long-term health effect of stress?
    9·2 answers
  • Perform the following division (-1/6)÷(-3/7)
    8·2 answers
  • Y=2x in graph coordinate form
    9·1 answer
  • Hey can someone solve this for me I need it ASAP
    12·1 answer
  • Can someone please help me
    12·2 answers
  • What is the equation of the line that passes through the point (-1,-5) and has a<br> slope of -1
    7·1 answer
  • for an interview 60% of the applicants were selected. After the interview 20% for those who were selected go to the job offer​
    7·1 answer
  • How to find the width of a triangle if the area is 24cm² and the base is 6cm ​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!