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
ladessa [460]
3 years ago
10

Solve the system.

Mathematics
1 answer:
Lisa [10]3 years ago
5 0

Answer:

(15, 8, 7 )

Step-by-step explanation:

x - y + z = 14 → (1)

y + z = 15 → (2)

z = 7 ← value of z is given

Substitute z = 7 into (2)

y + 7 = 15 ( subtract 7 from both sides )

y = 8

Substitute y = 8, z = 7 into (1)

x - 8 + 7 = 14

x - 1 = 14 ( add 1 to both sides )

x = 15

solution is (15, 8, 7 )

You might be interested in
Help me with geometry​
melisa1 [442]

Answer:

What question do you need help with?

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Let f (x) = -1/2(x + 2)+ 5
bogdanovich [222]

Answer:

Rate of change = -1

Step-by-step explanation:

Given:

f(x) = -½(x + 2)² + 5

Required:

Average rate of change from x = -3 to x = 1

Solution:

Rate of change = \frac{f(b) - f(a)}{b - a}

Where,

a = -3,

f(a) = f(-3) = -½(-3 + 2)² + 5 = -½(-1)² + 5 = 4.5

b = 1,

f(b) = f(1) = -½(1 + 2)² + 5 = -½(9) + 5 = 0.5

Plug in the values into the formula:

Rate of change = \frac{0.5 - 4.5}{1 - (-3)}

Rate of change = \frac{-4}{4}

Rate of change = -1

8 0
3 years ago
What is the difference between 49.2 and 12.3
Sauron [17]

Answer:

49.2 - 12.3 = 36.9

Step-by-step explanation:

Difference in Math terms means Subtract

5 0
3 years ago
Evaluate a+b for a= -9 and b=6
jeka94

Answer:

-9+6=-3

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Help please help me out with this (old math)
shutvik [7]
6 7/12 I hope this helps ya out

6 0
3 years ago
Read 2 more answers
Other questions:
  • 7. nelly spends 25% of her free time surfing the internet. if she spends approximately 2 hours per day surfing the internet, how
    5·1 answer
  • -x + 3 = 2 ( x + 15 )
    13·1 answer
  • A student said we cannot subtract 1.97 from 20 because one 1.97 has two decimal digits and 20 has none do you agree with this st
    8·1 answer
  • Please help me 6-7-8 please
    8·1 answer
  • Please help me.<br> I need your help
    14·1 answer
  • What Theorem can you use to show that the quadrilateral is a parallelogram
    8·1 answer
  • The water hose can fill a water basin in 6 minutes, while it takes 8 minutes to empty it with the drain spigot. How long will it
    11·1 answer
  • a point is chosen at random on AK. what is the probability that the point will be on CD. don't forget to reduce
    5·1 answer
  • cho tứ giác ABCD. Gọi M,N,P,Q là trung điểm của các cạnh AB, CD, AD, BC. Chứng minh rằng vecto MP = vecto QN, vecto MQ = vecto P
    7·1 answer
  • Rational root therom
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!