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
Katyanochek1 [597]
3 years ago
14

NEED HELP ASAP!

Mathematics
1 answer:
galina1969 [7]3 years ago
6 0

9514 1404 393

Answer:

  • lamp: $80
  • end table: $140

Step-by-step explanation:

If we let x and y represent the costs of a lamp and end table, respectively, the two purchases can be written as ...

  3x +2y = 520

  2x -y = 20

__

These equations can be solved many ways. If we use "elimination", we can add twice the second equation to the first to eliminate y:

  (3x +2y) +2(2x -y) = (520) +2(20)

  7x = 560 . . . . simplify

  x = 80 . . . . . . divide by 7

  y = 2x -20 = 2(80) -20 = 140

The cost of a lamp is $80; the cost of an end table is $140.

You might be interested in
Please help me with this question step by step. A rectangle has a width of 2x exponent 2 +4x+1) and a length of (8-x). What is t
timurjin [86]

Answer:

A = (2x² + 4x + 1) (8 − x)

A = -2x³ + 12x² + 31x + 8

Step-by-step explanation:

W = 2x² + 4x + 1

L = 8 − x

Area is width times length.

A = (2x² + 4x + 1) (8 − x)

If you wish, you can simplify with distribution.

A = 8 (2x² + 4x + 1) − x (2x² + 4x + 1)

A = 16x² + 32x + 8 − 2x³ − 4x² − x

A = -2x³ + 12x² + 31x + 8

6 0
3 years ago
PLZ HELP MARKIN BRAINIEST!!!
motikmotik

Answer:

It's no correlation

Step-by-step explanation:

It's no correlation because the dots are scattered everywhere. There's no exact direction they all lead to.

5 0
3 years ago
Swati recorded this data set, which contains an outlier.
podryga [215]

Answer:

lower quartile: 163  upper quartile: 184

Step-by-step explanation:

1. put the numbers in order from least to greatest. 97, 163, 169, 175, 184, 199

2. find the median. 172

3. find the median of the first 3 numbers to get your Q1. 163

4. find the median of the last 3 numbers to get your Q3. 184

3 0
3 years ago
Need help breaking this down
yulyashka [42]

Answer:

2b2t

Step-by-step explanation:

2b2t

5 0
3 years ago
Jill measures some scrap boards in her garage to
Alika [10]

Answer: Yes, Jill has enough scrap boards to create a border around her garden.

Step-by-step explanation:

2.75 + 3.2 + 1.65 + 2.6 = 10.2 m

7 0
3 years ago
Read 2 more answers
Other questions:
  • What is the square root of 169/225 in fraction?
    15·2 answers
  • Zina spends 1.5 hours setting up her sewing machine and making one hat. The total amount of time spent making hats can be repres
    7·2 answers
  • Answer worth 50 points
    5·2 answers
  • What does the word partial mean.
    7·2 answers
  • 3[-x+(2x+1)]=x-1 ? What is X?
    6·1 answer
  • If 1/3 of students in a class like school and 1/3 of those that like school, like science, what is the fraction of students that
    10·2 answers
  • 45 1/2% in simplest form
    8·1 answer
  • Please hellllppppp me!!
    6·2 answers
  • A good faith estimate is required by law to be given by the lender to the borrower within three days of submitting a loan applic
    8·1 answer
  • Help (Image attached)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!