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
iVinArrow [24]
2 years ago
9

Eq 1 X+Y=16 Eq 2 6x+9y=120 Solve by substitution Solve step by step

Mathematics
1 answer:
Alexxx [7]2 years ago
7 0

Answer:

X = 8, Y = 8

Step-by-step explanation:

Step 1) Solve for Y w/ bottom equation to yield - y = -2/3x + 40/3.

Step 2) substitute equation into x + y = 16 to get 1/3x + 40/3 = 16 multiply by 3 to clear the fractions and get x + 40 = 48 - subtract 40 by both sides to get x = 8.

Step 3) Plug x = 8 into the bottom equation to get 48 + 9y = 120, subtract 48 by both sides to get 9y = 72 and then divide by 9. The product is y = 8.

You might be interested in
(-3+-2^2) + -(4*2) / 2
ozzi

Answer:

-3

Step-by-step explanation:

2^2 = 4

4 + (-3) = 1

4*2 = 8

8 * -1 = -8

-8 / 2 = -4

1 + -4 = -3

5 0
3 years ago
Label the terms in the expression as constant, linear, and quadratic
Masteriza [31]

Answer:

Step-by-step explanation:

4x^2 is the quadratic

3x is linear

-6 is the constant.

8 0
3 years ago
There are 120 students in the seventh grade. Seventy percent of these students are involved in extracurricular activites. How ma
Tanzania [10]

First, turn 70% into a decimal by dividing 70 by 100.

70% ⇒ 0.70

Multiply 120 by 0.70.

120 × 0.70 = 84

Now we know that 84 students are involved in extracurricular activities. Subtract 84 from 120 to find the amount of students who are <em>not</em> involved in extracurricular activities.

120 - 84 = 36

<h2>Answer:</h2>

<u>36 seventh grade students are not involved in extracurricular activities.</u>

6 0
3 years ago
Read 2 more answers
A town determined that the function f(x) - 820(0.977* models the number of speeding tickets issued in the town x years after 200
Rom4ik [11]

Answer:D The number of tickets is increasing by 97% each year

Step-by-step explanation:

The rate of change is (0.97). You change that decimal into a percent To get your percentage rate / increase rate...I think

3 0
3 years ago
The bacteria in an old piece of cheese is growing at a rate that can be modeled by y = 280 • 2^x. Determine which number represe
Katyanochek1 [597]
The answer is <span>C.) 2

The general form of formula is
y = a </span><span>• r^x
y - the total number of bacteria after x period of time
a - the initial number of bacteria
r - growth rate
x - period of time

Let's compare:
</span>y =    a   • r^x
<span>y = 280 • 2^x

Since r = 2, the growth rate is C.) 2</span>
5 0
3 years ago
Read 2 more answers
Other questions:
  • recycled cds incorporated, offers a choice of 5 used cds for $26, with each additional cd costing $4. write a cost function for
    10·1 answer
  • If one card is randomly picked from a standard deck of 52 cards, find the
    9·1 answer
  • Distributive property 6y+18
    12·1 answer
  • Carly uses the shipping box in the shape of a rectangular prism as shown in the diagram to mail a present to her grandmother. Wh
    10·1 answer
  • What is the area of this parallelogram​
    6·1 answer
  • What is the median of 7, 9, 6, 15, 22, 25, 31?<br><br> 15<br> 16<br> 19<br> 24
    13·1 answer
  • Whats is the valume of the created retagular prism
    8·1 answer
  • A juice recipe calls for 5 cups of grape juice for every 2 cups of peach juice are needed for a batch that uses 8 cups of peach
    9·2 answers
  • Pls answer i need answer fast
    14·2 answers
  • Suppose 300 randomly selected people are surveyed to determine whether or not they rent their home. Of the 300 surveyed, 60 repo
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!