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
lora16 [44]
3 years ago
8

23. How many solutions are there to the system of equations below?

Mathematics
2 answers:
xxTIMURxx [149]3 years ago
5 0

D

When you add 2+3 which equals 5 so it’ll be y=5x-7. And plug in y into the other equation. 5x-7-5x+8=0. -7-8=0, -7-8 =-1 therefore there is no solution because-7-8= -1 not 0.

Nina [5.8K]3 years ago
5 0

Answer:

There are exactly 4 solutions

Step-by-step explanation

Given the two equation

y = x² + 3x – 7 ... (1)

y – 5x + 8 = 0 ...(2)

From equation 2,

y - 5x = -8

y = -8+5x ...(3)

Substituting equation 3 into 1

-8+5x = x²+3x-7

Moving -8+5x to the other side of the equation, we have:

x²+3x-7+8-5x = 0

x²+3x-8x-7+8= 0

x²-5x+1 = 0

Since the resulting equation is quadratic, we will get two solutions as our x and substituting both value of x in equation 2 to get y will give us two solutions for our y variable making a total of 4 solutions.

Therefore in the system of equation given, there are exactly 4 solutions

You might be interested in
A jar contains 6 yellow marbles, 4 black marbles, and 2 purple marbles. Two marbles are picked at random, without replacement. W
ludmilkaskok [199]

Answer:

The probability of selecting both yellow is 5/22.

Step-by-step explanation:

Given the number of yellow marbles = 6

Black marbles = 4

Purple marble = 2

Now find the total number of marbles in the jar.

Thus total marbles = Yellow marbles + Black marbles  + Purples marble

Now insert the values in the above formula.

Total marbles = 6 + 4 + 2

Total marbles = 12

The probability of 2 yellow marble:

= \frac{6}{12} \times \frac{5}{11} \\= \frac{5}{22}

Thus, the probability of selecting both yellow is 5/22.

3 0
4 years ago
Liana can see that the measure of Angle L and Angle M form a straight line. Since Liana knows that a straight line has an angle
cricket20 [7]

Answer:

150 degrees

Step-by-step explanation:

Let's start off by looking at what we are working with in this specific problem:

We can see that we are looking at 2 angles, angle L and angle M, that add up to a total of 180 degrees (aka a straight line)

Now that we know that, we also have to keep is mind that angle L + angle M = 180 degrees.

Now that we've got all of that out of the way, let's set up a simple algebraic equation:

angle L + angle M = 180

We also know that angle L is 30 degrees so let's add it into the equation we have just created:

30 + angle M = 180

We now know that 30 plus angle M (whatever it might be) is equal to 180 so in order to solve this problem we have to do some simple subtraction.

180 - 30 = angle M

Now we are left with:

150 degrees = angle M

4 0
3 years ago
HELPPPPPPPP Write the standard form of an equation
vovangra [49]

Answer:

See the Answer Below:) I am certain this is the answer

Step-by-step explanation:

4 0
3 years ago
The mean of 17,x,10,17,51 is 21 find x
KIM [24]

Answer:

x=10

Step-by-step explanation:

(17+x+10+51+17)/5=21

95+x=105

x=10

8 0
3 years ago
Find the length of st​
lutik1710 [3]
The legth is 3.6 :) it says it to the right
6 0
3 years ago
Other questions:
  • I have another question for u guys could u plz help me out? so here it is? Anthony threw a ball from the top of a 10-story build
    13·1 answer
  • A carpet square is 9inches what’s the area of the carpet square?
    14·1 answer
  • 3.) Alex makes $31,992 per year and pays about 15% of his gross monthly income in federal
    15·1 answer
  • Add.
    6·2 answers
  • Help please thank you
    11·1 answer
  • 9. If AJKL - ANML, find the values of x and y.
    15·1 answer
  • What will the area be?<br><br><br> Include the appropriate unit in your answer.
    15·1 answer
  • (I NEED HELP THIS IS A TEST)
    7·1 answer
  • Lol help anyone?PLEASE !!
    8·2 answers
  • Kyla put 4 ounces of ilk in 2 cups of coffee for her parents. How much milk would she need for 16 cups of coffee? A.1c B.1qt C.2
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!