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
Anestetic [448]
3 years ago
8

Find the values of a and b so that the solution of the linear system is (5,2)

Mathematics
2 answers:
True [87]3 years ago
8 0
5*a+2*b=23
5*a-2*b=7:
a=(23-2b)/5
b=(7+5a)/2:
a=(23-2*(7+5a)/2)/5
5a=23-7-5a
5a+5a=23
a=23/10
b=(7+5*23/10)/2
b=(7+23/2)/2=(37/2)/2=37
AVprozaik [17]3 years ago
7 0

Answer: a = 10 and b= 4

Step-by-step explanation:

x =5 y = 2

5a + 2b = 23-------(1)

5a - 2b = 7---------(2)

(1) -(2)

4b = 16

b = 16/4

b = 4

also, (1) + (2)

10a =30

a = 30/10

a = 3

You might be interested in
Mrs. Perez was looking at her bank account statement. She noticed that her beginning balance was $500 and she added nothing to h
Irina18 [472]
The answer would be d. Because the identity property of addition is that if you add zero to any number the number stays the same
3 0
3 years ago
1. What is the value of 5a + 2b when a = 2 and b = 6 ?
Montano1993 [528]

Answer:

1. 22

2. 20

3. 11

Step-by-step explanation:

1. 5(2) + 2(6)

10 + 12 = 22

2. (5)^2 -5

25 - 5 = 20

3. (4)^2 + 6 / 2

16 + 6 / 2

22 / 2 = 11

7 0
3 years ago
PLEASE Help me ASAP!! show work please!!
Digiron [165]
140 * .45 = 63
Add 140 and 63
2. 203 because you are adding 45% of 140 to increase it by 45%
Same with the other except subtraction
4. 15
I think this is right, I am not sure
5 0
3 years ago
Read 2 more answers
Factor 10a^3 b ^2 −5a^2 b+15a^2 b^3 PLS HELP IM STUCKK
kykrilka [37]

10a^3b^2-5a^2b+15a^2b^3\\\\=5a^2b(2ab-1+3b^2)

8 0
2 years ago
He point-slope form of the equation of the line that passes through (–4, –3) and (12, 1) is y – 1 = y minus 1 equals StartFracti
ruslelena [56]

Answer:

x-4y=8

Step-by-step explanation:

we have

y-1=\frac{1}{4}(x-12)

Convert to standard form

Ax+By=C

where

A is a positive integer

B and C are integers

Multiply by 4 both sides to remove the fraction

4y-4=x-12

subtract 4y both sides

-4=x-12-4y

Adds 12 both sides

-4+12=x-4y

8=x-4y

Rewrite

x-4y=8

8 0
2 years ago
Read 2 more answers
Other questions:
  • What is a mixed radical in simplest form? Use square root number 72.
    15·1 answer
  • In a group of​ bird-watchers, 3 out of every 5 people have seen a bald eagle. What percent of the​ bird-watchers have not seen a
    7·1 answer
  • Macy is painting a design that contains two repeating patterns. One pattern repeats every 8 inches. The other repeats every 12 i
    7·1 answer
  • Find the radius of a circle having area 616cm square.​
    8·1 answer
  • Where were the two cars in relation to each other when they began traveling?
    9·1 answer
  • ما النتائج المترتبة على :-<br> ١- الاحتلال البريطاني لمصر.
    6·1 answer
  • Question 6
    12·1 answer
  • HELPPPPPP QUICKKKKKHELPPPPPP QUICKKKKK
    13·2 answers
  • 100 points anwser asap
    9·2 answers
  • Companies also gather data on customer web use and preferences often without
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!