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
OverLord2011 [107]
4 years ago
11

A: 5x − 2y = 10

Mathematics
1 answer:
Nuetrik [128]4 years ago
7 0

Answer:

D) Multiply A by -4 and B by 5

Step-by-step explanation:

5x-2y=10

4x+3y=7

----------------

-4(5x-2y)=-4(10)

5(4x+3y)=5(7)

----------------------

-20x+8y=-40

20x+15y=35

---------------------

23y=-5

y=-5/23

5x-2(-5/23)=10

5x+10/23=10

5x=10-10/23

5x=230/23-10/23

5x=220/23

x=(220/23)/5

x=(220/23)(1/5)

x=220/115

x=44/23

You might be interested in
Simplify the expression using order of operations. 15−7×2+23
ZanzabumX [31]

Answer: 24

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Madison wants to order t-shirts for the university which consists of about 12000 students. she takes a random sample to figure o
earnstyle [38]

Answer:

She should order a total of 5,160 medium sized t-shirts

Step-by-step explanation:

To calculate the number of medium sized t-shirt to be ordered, we shall be using the proportion of students that wanted medium sized t-shirt in her survey to multiply the total number of students that we have.

From the question, we can identify that the probability that a student will like a medium sized t-shirt is simply 129/300

Now we have about 12000 students in the University, using the probability from the survey, the number of medium sized t shirt she should order would be;

129/300 * 12,000 = 129 * 40 = 5,160 medium sized t-shirts

8 0
3 years ago
A garden wall is 4 feet in height and has a 6-foot shadow. A tree in the garden casts a 24-foot shadow at the same time of day.
4vir4ik [10]

Answer:

7height

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Equation of a line into slope-intercept form, simplifying all<br> fractions.<br> 12x + 3y = -18
stellarik [79]

Answer:

y = -4x - 6

Step-by-step explanation:

12x + 3y = -18

Solve for y.

3y = -12x - 18

y = -12/3 x - 18/3

y = -4x - 6

3 0
3 years ago
Read 2 more answers
50 POINTS
Tcecarenko [31]

Answer:

<u>Part 1: C. $3,159.30</u>

<u>Part 2. C. –5; –135; –10,935</u>

Step-by-step explanation:

Part 1:

Price of the boat = $ 16,600

Depreciation rate = 14% = 0.14

Time of utilization of the boat = 11 years

Price of the boat after 11 years = Original price * (1 - Depreciation rate)^Time of utilization of the boat

Price of the boat after 11 years = 16,600 * (1 - 0.14)¹¹

Price of the boat after 11 years = 16,600 * 0.1903

<u>Price of the boat after 11 years = $ 3,159.30</u>

Part 2:

Let's find out the first term of the sequence given:

A(1) = -5 * 3¹⁻¹

A(1) = -5 * 1

A(1) = -5

Let's find out the fourth term of the sequence given:

A(4) = -5 * 3⁴⁻¹

A(4) = -5 * 3³

A(4) = -5 * 27

A(4) = -135

Let's find out the eighth term of the sequence given:

A(8) = -5 * 3⁸⁻¹

A(8) = -5 * 3⁷

A(8) = -5 * 2,187

A(8) = -10,935

4 0
3 years ago
Other questions:
  • Does the point (4, 8) satisfy the equation y = x + 6
    15·2 answers
  • PLEASE HELP NOW! WILL GET BRAINLIEST IF CORRECT, ALSO WILL GET THANKS!!
    15·1 answer
  • Proof by Contradiction : Show that √ 2 is irrational.
    15·1 answer
  • Lyla and Gio are packing boxes for a food drive. Lyla packs 20.5 boxes per hour. After 2 hours, Gio has packed 10.3 more boxes t
    14·1 answer
  • The length of a rectangular plot of land is 1Start Fraction 17 over 25 End Fraction times its width. If the width of the plot is
    13·2 answers
  • Diane makes fruit punch with 3 cups of cranberry juice, 2 cups of
    5·2 answers
  • Megan budgeted $300 for her shopping trip. She spent $61.50 on jewelry at Revin Jewelry. What percent of her budget did she spen
    12·1 answer
  • 24/10 into hundredths​
    10·1 answer
  • Seth has 15 cans of regular soda and 20 cans of diet soda. He wants to create some identical refreshment tables that will operat
    11·1 answer
  • carys had some money. She brought a dirnk for £1.55 and a piece of cake for £1.30 she now has three-quarters of her money left.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!