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
riadik2000 [5.3K]
2 years ago
15

Can Anybody Help me?

Mathematics
2 answers:
Leviafan [203]2 years ago
8 0

Answer:

x=8, y=-1

Step-by-step explanation:

The figure is said to be a rectangle, which means opposite sides have to be equal in length. From this, we can write a system of equations:

5x-2y=42

2x+3y=13

There are a number of ways to solve this but I'll go with elimination--that means you need to try to remove one variable first by manipulating the equations and solve for the other variable. Then you use the solution to solve for the variable you initially removed. That sounds confusing, but let me show you how to do it.

If you multiply the first equation by 3 and the second equation by 2, you'll have have:

15x-6y=126

4x+6y=26

Now, we can add these two equations. The y will cancel out, so we can easily solve for x.

19x=152

x=8

Use this value of x to substitute back into either of the original equations to find y.

5(8)-2y=42

40-2y=42

-2y=2

y=-1

allochka39001 [22]2 years ago
6 0
X=8 y= negative 1 I think
You might be interested in
A bag contains three marbles, eight blue marbles and nine red marbles. If the marbles are picked at random, what is the probabil
Phoenix [80]

The probability of obtaining two blue marbles without replacement is equal to 0.15.

We are given that:

The number of yellow marbles = 3

Number of red marbles = 9

Number of Blue marbles = 8

Total marbles = 3 + 9 + 8

Total marbles = 20

Now, we have to calculate the probability of obtaining two blue marbles without replacement.

The probability will be:

P( obtaining two blue marbles without replacement )  = 8 / 20 × 7 / 19

P( obtaining two blue marbles without replacement )  = 56 / 380

P( obtaining two blue marbles without replacement )  = 0.15

Therefore, the probability of obtaining two blue marbles without replacement is equal to 0.15.

Learn more about probability here:

brainly.com/question/24756209

#SPJ9

5 0
1 year ago
100 Freebie points!!! YW Nerds
blondinia [14]
Thanks for the points.
8 0
2 years ago
Read 2 more answers
An initial population of 415
slamgirl [31]

Answer:

The exponential function to model the duck population is:

f(n)=415*(1.32)^n, where:

x is the duck population

n is the number of years

Step-by-step explanation:

In order to calculate the duck population you can use the formula to calculate future value:

FV=PV*(1+r)^n

FV=future value

PV=present value

r=rate

n=number of periods of time

In this case, the present value is the initial population of 415 and the rate is 32%. You can replace these values on the formula and the exponential function to model the duck population would be:

f(n)=415*(1+0.32)^n

f(n)=415*(1.32)^n, where:

x is the duck population

n is the number of years

3 0
3 years ago
PLEASE ANSWER <br><br> Which characteristic is shared by both prokaryotes and eukaryotes?
Norma-Jean [14]

Answer:

the 3rd one,

Step-by-step explanation:

Because it is the 3rd one

7 0
2 years ago
Read 2 more answers
Need help with number 4
zmey [24]
<span>–6(x – 2y) when x = –3 and y = –5
so
</span><span>–6(x – 2y) 
= </span><span>–6(-3 – 2(-5))
= -6(-3 + 10)
= -6(7)
= -42

answer
</span><span>A. -42</span>
3 0
2 years ago
Other questions:
  • One of the two hypotheses is to be chosen based on an observation of the random variable X. If H0 is true, then X is exponential
    9·1 answer
  • Find the equation of the quadratic function whose graph is a parabola containing the points (0,2), (3,26), and (-1,6).
    8·1 answer
  • In which quadrant does the point lie? Write the coordinates of the point.
    7·1 answer
  • The circumference of a circle is 7π in. Find its radius, in inches.
    6·2 answers
  • At a real estate​ agency, an agent sold a house for ​$327,000. The commission rate is ​7.5% for the real estate agency and the c
    6·1 answer
  • The heiaght of a doir in a house is aporoximatly​
    13·2 answers
  • (2.5x-9)+6x=-7
    11·2 answers
  • You are trying to dunk a basketball.
    9·1 answer
  • The square of a negative number increased by 6 times the number is 72. Find the number.
    13·1 answer
  • 8k^4 -3k^2 multiplied by 5k^2
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!