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
Alex17521 [72]
3 years ago
10

y=5x+23, -2x-y=5 i need help with this, it’s solving by substitution. i don’t get it someone pls help

Mathematics
2 answers:
Anna71 [15]3 years ago
7 0
You just put the y=5x+23 in -2x-y=5
-2x-(5x+23)=5
-2x-5x-23=5
-7x=5+23
-7x=28
X=-4
madam [21]3 years ago
4 0

Answer: if this doesn't help u let me know and i can explain more have a good day <3

x=−4 and y=3

Step-by-step explanation:

Step: Solvey=5x+23for y:

y=5x+23

Step: Substitute5x+23foryin−2x−y=5:

−2x−y=5

−2x−(5x+23)=5

−7x−23=5(Simplify both sides of the equation)

−7x−23+23=5+23(Add 23 to both sides)

−7x=28

−7x/−7=28/−7

(Divide both sides by -7)

x=−4

Step: Substitute−4 for x in y=5x+23:

y=5x+23

y=(5)(−4)+23

y=3(Simplify both sides of the equation)

Answer:

x=−4 and y=3

You might be interested in
(This is due by 11:59...I posted it a while ago but no reply)
Trava [24]

The kite is directly 35.707 yards high above Erika

Step-by-step explanation:

Given scenario forms a right triangle where the length of string is the hypotenuse and the distance between Mary and Erika is the base.

So

H = 50\ yards\\B = 35\ yards

We have to find the perpendicular

Using pythagoras theorem,

H^2 = B^2 + P^2

Putting the values

(50)^2 = (35)^2 + P^2\\2500 = 1225 + P^2\\P^2 = 1275\\

Taking square root on both sides

\sqrt{P^2} = \sqrt{1275}\\P= 35.707

Hence,

The kite is directly 35.707 yards high above Erika

Keywords: Triangle, Pythagoras

Learn more about triangles at:

  • brainly.com/question/10940255
  • brainly.com/question/10941043

#LearnwithBrainly

8 0
4 years ago
There are 347 students going on a field trip. Each bus holds 44 students. If each bus costs $95, is the total cost of the buses
nevsk [136]

Answer:

Total cost= $760

Step-by-step explanation:

Giving the following information:

Number of students= 347

Each bus holds 44 students.

Bus cost= $95

<u>First, we need to determine the number of buses needed:</u>

Number of buses= total students / student per bus

Number of buses= 347 / 44

Number of buses= 7.88 = 8 buses

<u>Now, the total cost:</u>

Total cost= 8*95

Total cost= $760

6 0
4 years ago
What is the answer? <br> May you please help me on this<br> Plsss asapp
sergey [27]

Answer:

i believe its c

Step-by-step explanation:

6 0
2 years ago
A bicycle store costs ​$4000 per month to operate. The store pays an average of ​$75 per bike. The average selling price of each
Montano1993 [528]

Answer:

50 you need to break even

Step-by-step explanation:

4000+75n= stores operating costs

155N=stores profit

155n=4000+75n

-75 -75

80n=4000

80/80 4000/80

N=50

6 0
4 years ago
Fred the clown can create 20 animal balloons every 15 minutes.How many animal ballons can he make in 45 minutes?
fomenos

Answer:

60 animal balloons

Step-by-step explanation:

15 times 3 equals 45 so 20 times 3 equals 60 balloons

8 0
4 years ago
Other questions:
  • Help ASAP!!! Read the question and answer please!!! First answer and correct answer gets the brain-
    11·1 answer
  • Could please some explain and solve these questions ?
    15·1 answer
  • if 1 bottle of gas treatment (5.25 oz/135 ml) treats 21 gallons of gas, how much gas treatment would be used to treat 1 gallon o
    13·1 answer
  • Can some one plzzzzzzzzzz help 1\/5
    7·1 answer
  • 10pts and I’ll mark brainliest!<br> (Also EXPLAIN the reasoning you used to find the expression)
    6·1 answer
  • Farmland A farmer has a rectangular plot of land shaped like the figure in the
    15·1 answer
  • 6. You are saving up for adopting a dog. You want to have at least $200 saved.
    8·1 answer
  • What is the answer to 7+1+10t
    8·1 answer
  • Please help if you want BRIANLIST PLEASE!!!
    5·1 answer
  • Find the missing angle on the triangle pls need help
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!