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
AlexFokin [52]
3 years ago
8

Without drawing the graphs, find the points of intersection of the lines: a 7x+4y=23 and 8x–10y=19

Mathematics
1 answer:
emmainna [20.7K]3 years ago
8 0

Answer:

(3,0.5)

Step-by-step explanation:

The given system has equations:

7x + 4y = 23 \\ 8x - 10y = 19

Let us multiply the second equation by 4 and the first equation by 10.

70x + 40y = 230 \\ 32x - 40y = 76

We add both new equations to get:

102x = 306 \\ x =  \frac{306}{102}  = 3

Put x=3 into the first equation and solve for y.

7(3) + 4y = 23 \\ 21 + 4y = 23 \\ 4y = 23 - 21 \\ 4y = 2 \\  y =  \frac{1}{2}

The point of intersection is the solution to the system of equation which is (3,0.5)

You might be interested in
I need this answered please
TiliK225 [7]
The answers are

1: False
2: True
3: True
4: False
4 0
2 years ago
I just wanna make sure my answer is right can anyone confirmmm
valina [46]
You would get it wrong cause you haven’t answered anything
3 0
3 years ago
A gym employee is paid monthly. After working for three months, he had earned $4,500. To
Leto [7]

Answer:

$9000

Step-by-step explanation:

A gym employee has earned in 3 months =$4500

Then his monthly salary =$4500/3 =$1500

After six months he will earn = 6 × his monthly salary

= 6×$1500=$9000

5 0
3 years ago
Jessica earned $16 mowing a neighbor's yard. She bought a craft kit for $7.37. She used $3.75 to buy food for a food drive. She
iogann1982 [59]

Answer:

$4.88

Step-by-step explanation:

Jessica made $16 mowing a neighbors yard

She brought a craft kit for $7.37

16-7.37

= 8.63

She used $3.75 to buy food for a food drive

8.63-3.75

= 4.88

Hence the amount Jessica put in the savings account is $4.88

4 0
2 years ago
Read 2 more answers
PLEASE HELP!
34kurt
It's both. Look at the gradients between one point then the one after it. It stays constant from one to the next. (Gradient is 2 by the way: (5-3)/(2-1)) 
3 0
3 years ago
Read 2 more answers
Other questions:
  • In 2016, a town had a population of 80,000 people. The growth rate per year is 4%.
    11·1 answer
  • Use the counting principle to determine the number of elements in the sample space. The possible ways to complete a multiple-cho
    5·1 answer
  • Anastasia works at the local museum and has been tracking museum attendance. On Thursday, she counts 220 museum visitors under t
    9·1 answer
  • Robby and his friend, Sal, are at the top of a lookout tower. Sal dares Robby to drop one of his favorite pair of Jordan's from
    12·1 answer
  • How do I solve this?
    15·1 answer
  • Giving brainliest for the correct answer
    13·1 answer
  • Help me with this please. <br><br> x = ?<br><br> use socatoah
    7·2 answers
  • In AFGH, f = 3.1 inches, g = 2 inches and h=3.2 inches. Find the measure of ZF to the
    14·1 answer
  • HELP PLEASE FOR BRAINLIST!!!!!!!!!!!!
    8·1 answer
  • A normal deck of 52 cards includes 4 suits where each suit ranges from 2 though 10 inclusive, Jack, Queen, King and Ace. In a st
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!