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
Elza [17]
3 years ago
5

Y=4x+8 y=-x-7 solve by substitution

Mathematics
2 answers:
ValentinkaMS [17]3 years ago
8 0

Answer:x=15

Step-by-step explanation:

nikklg [1K]3 years ago
7 0

Step-by-step explanation:

Alrighty! here you go image.

You might be interested in
FIND PR.PLS HELP BRAINLIEST...
slega [8]

Answer:

6.2 units.

Step-by-step explanation:

We are given two angles and an opposite corresponding side. To solve for an unknown side, we can use the law of sines.

\frac{8}{sin(90)}=\frac{x}{sin(180-39-90)}=\frac{x}{sin(51)}

Cross multiplying and solving will get you this:

x=\frac{8(sin(51))}{sin(90}

Which can simplify to:

x=8(sin(51))

Which putting into a calculator gets you:

x=6.2

So the line PR is 6.2 units long.

6 0
3 years ago
Find the zeros of the function: f(x)=3x^2-5x+3
maks197457 [2]

Answer:

x = 5 ± i √ 11 /6

Step-by-step explanation:

The roots (zeros) are the  x  values where the graph intersects the x-axis. To find the roots (zeros), replace  y  with  0  and solve for  x .

8 0
3 years ago
At a certain high school, 15 students play stringed instruments and
Aleks [24]

Answer:

<em>0</em> is the probability that a  randomly selected student plays both a stringed and a brass  instrument.

Step-by-step explanation:

Given that:

Number of students who play stringed instruments, N(A) = 15

Number of students who play brass instruments, N(B) = 20

Number of students who play neither, N(A \cup B)' = 5

<u>To find:</u>

The probability that a randomly selected students plays both = ?

<u>Solution:</u>

Total Number of students = N(A)+N(B)+N(A \cup B)' =15 + 20 + 5 = 40

(As there is no student common in both the instruments we can simply add the three values to find the total number of students)

As per the venn diagram, no student plays both the instruments i.e.

N(A\cap B) =0

Formula for probability of an event E can be observed as:

P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}

P(A\cap B) = \dfrac{N(A\cap B)}{N(U)}\\\Rightarrow \dfrac{0}{40}\\\Rightarrow P(A\cap B) = 0

So, <em>0</em> is the probability that a  randomly selected student plays both a stringed and a brass  instrument.

5 0
3 years ago
Enter the correct 9 letter sequence (no space) use all capital letters
olya-2409 [2.1K]

Answer:

i think you forgot the rest of the question?

6 0
3 years ago
Pls help me with this ​
tamaranim1 [39]

Answer:

Step-by-step explanation:

So you start with 5.7 miles which is the first ride and the long ride is 5 2/3 times longer so you multiply 5.7 by 5 2/3. 5.7 is equivalent to 5 7/10 so you multiply 5 7/10 by 5 2/3. If we get common denominators we will end up with 5 21/30 and 5 20/30 then you multiply. You will get 32.3: 32.3 is equivalent to 32 and 3/10. Then you add that to 5 and 7/10. You will get 38.

Answer: 38

3 0
3 years ago
Other questions:
  • How many molecules are in 12.5 moles of calcium phosphate
    13·1 answer
  • How do you use the slope to prove lines are parallel or perpendicular?
    9·1 answer
  • How do u find angle mesurements in a triangle
    10·1 answer
  • When making a fruit salad, a chef chooses 7 fruits from 10 that are in season. how many different fruit salads can the chef crea
    15·1 answer
  • Help me please assap
    10·1 answer
  • At a farm the ratio of cows to horses was 7:2. If there were 21 cows at the farm, how many horses were there?
    8·2 answers
  • Fred is 4 times as old as nathen and is also27 years older than nathen
    6·1 answer
  • Solve<br>7w - 5 &lt; 1 - 3w<br>can someone help me ?​
    9·2 answers
  • Find the minimum or maximum value of the function. (Desmos)
    11·1 answer
  • NEED HELP ASAP WILL GIVE BRAINLIEST REAL ANSWERS ONLY PLZ WILL REPORT FAKE ANSWERS
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!