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
faltersainse [42]
3 years ago
8

X+Y=100 4.5X+20Y=822 Elimination, graphing,and substitution methods.

Mathematics
1 answer:
serious [3.7K]3 years ago
4 0

Answer:

y=10

4 SX +20 Y= 822

Elimination

X - 10 -4

UX - 822-20Y

6.5

10 -4 = 822-201

45

- 4.5 = 822 - 204

15.54=774

4 = 90:13

= -40.129

You might be interested in
How do I solve this?
ra1l [238]

Answer:

(-6,1)   (2,7)

Step-by-step explanation:

y =x+5

y = x^2 +5x-7

Set the two equations equal since y=y

x+5 =  x^2 +5x -7

Subtract x from each side

x-x+5 =  x^2 +5x-x -7

5 = x^2 +4x -7

Subtract 5 from each side

5-5 = x^2 +4x -7-5

0 = x^2 +4x-12

Now we can factor the right side

What 2 numbers multiply to -12 and add to +4

6*-2 =-12

6-2 =4

0 = (x+6) (x-2)

Using the zero product property

x+6=0    x-2=0

x=-6   x=2

We need to find y for each value of x

y = x+5           y = x+5

y = -6+5            y = 2+5

y =1                 y = 7

4 0
3 years ago
G(5)= please help asap
xenn [34]

Answer:

The answer is 5G

Step-by-step explanation:

6 0
2 years ago
Please i will give brainliest <br>​
igor_vitrenko [27]

Answer:

6✓2=8.49

✓8.49^2-6^2

✓ 36

6

✓24^2+6^2

✓612

=24.74=x

5 0
3 years ago
last year, 639 students attended a summer camp. of those who attended this year, 0.5% also attended summer camp last year. about
lawyer [7]

Answer:

First of all, he have to find out what 0.5% of the students is.

Second of all, find out what 0.5 of 100 is. 100 divided by 0.5 is 200.

Third of all, divide 200 from 639. This equals 3.195

Since it is asking about how many, I would go with about 3. After all, you can't have have half of a person, so the decimals shouldn't be added.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
X^2 =11+2 sqrt30 find value of X
Fofino [41]

Answer:

If the question goes like this : x²=11+2

then the value of x will be √13

Step-by-step explanation:

x²=11+2

x²=13

x=√13 ans…

7 0
2 years ago
Other questions:
  • Anthony and Andrew raised money for charity in the ratio 3:7. Anthony raised $177. How much did Andrew raise?
    7·1 answer
  • Read the word problem.
    7·2 answers
  • Write an algebraic rule to describe the translation P(–8, 6)
    7·1 answer
  • 5) –2x – 9y=-25<br> -4x – 9y=-23
    15·2 answers
  • Can you make a triangle with the following side lengths: 1 in, 2 in, 5 in ?
    8·1 answer
  • A. 70-74<br> B. 60-64<br> C.75-79<br> D.65-69<br> E.55-59<br><br> please answer will give brainliest
    12·1 answer
  • $20 item marked down 40%
    9·1 answer
  • The scale factor from Drawing 1 to Drawing 2 is 41 2 over 3 %. Justify why Drawing 1 is a scale drawing of Drawing 2 and why it
    15·1 answer
  • The table shows ordered pairs of the function . What is the value of y when ?
    13·1 answer
  • Identify the set of perpendicular lines in this image.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!