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
xxMikexx [17]
2 years ago
10

Solve the following systems of equations without graphing 5x + 10y = 30 -5x +15y = 20

Mathematics
1 answer:
galben [10]2 years ago
8 0

Answer:

(2, 2)

Step-by-step explanation:

In this case, elimination would be the most efficient means of solving.

Simply, add the two equations, and you will be left with only one variable to solve for. (In this case y) You are then able to take your solution and plug it into an equation and solve for x, therefore giving you their intercept.\

5x + 10y = 30

+

-5x + 15y = 20

(x's cancel) 25y = 50

25y = 50

y = 2

5x + 10(2) = 30

5x + 20 = 30

5x = 10

x = 2

The solution to this equation is (2, 2)

You might be interested in
If triangle CDE is dilated by a scale factor of 1/5 with a center of dilation at vertex E, what is the area of triangle C'D'E'?
timurjin [86]
The correct answer would be Choice B: 4 square units.

When the scale factor is 1/5, that means the lengths of the sides are 1/5 of the original size. So instead of having a base of 20 and height of 10, the new triangle has a base of 4 and a height of 2.

The area of the triangle is: (4 x 2) / 2 = 4
8 0
3 years ago
Read 2 more answers
Maureen went on a 3 day 50 mile trip. the first day she biked 17 7/8 miles . the second day she biked 18 5/7 miles. How many mil
Inessa [10]
To find the miles for 3rd day, we take away the miles she biked for the first two day from the total.

   50 - 17 \dfrac{7}{8} - 18\dfrac{5}{7}

=50 - 17 \dfrac{7 \times 7}{8 \times 7} - 18\dfrac{5 \times 8}{7 \times 8}

= 48 \dfrac{112}{56}  - 17 \dfrac{49}{56} - 18\dfrac{40}{56}

= 13 \dfrac{23}{56}   \text { miles }

-----------------------------------------------------------------------------------
Answer: She traveled 13 23/56 miles on the third day.
-----------------------------------------------------------------------------------
7 0
3 years ago
Help me in both please it’s a test and i need help
nataly862011 [7]

1. -2x + 3y + 5

A. -x + -x + y + y + y + 1 + 1 + 1 + 1 + 1

B. -x + -x + 2y + y + 4 + 1

D. -5x + 3x + 4y - y + 4 + 1

2. -$40 + 100 = $60 - $50 = $10

Cindy currently has $10 left in her bank account.

5 0
2 years ago
<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7Bx%20%2B%201%7D%7B2x%20-%201%7D%20%20-%20%20%5Cfrac%7Bx%20-%201%7D%7B2x%20%2B%201%
lubasha [3.4K]

x=0

because you must

determine the undefined range

write all numerators above the common denomonator

multiply the parenthesis

collect the alike terms

remove parenthesis

eliminate the opposites collect the like terms

set the numerator equal to 0

divide both sides by 6

check if thesolution is the defined range

if so then you would find your answer X=0

8 0
2 years ago
Can someone help lol
djverab [1.8K]

Answer:

p=30 q=150

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Other questions:
  • Plsssss help 30 POINTS
    15·2 answers
  • If b=a, where one the number line will b appear
    11·1 answer
  • Kai wrote the number 85 on the board. Is 85 prime or composite? Explain.
    6·1 answer
  • A coach is assessing the correlation between the number of hours spent practicing and the average number of points scored in a g
    8·1 answer
  • Help me In sick and don’t feel like doing their rn tbh
    9·1 answer
  • If you draw three cards from a regular deck of 52 cards, keeping each card out of the deck after you draw it, what are the chanc
    6·1 answer
  • Question is in the picture
    12·1 answer
  • An isosceles triangle has two angle measurements of 80 and 50 degrees. Could more than one triangle be drawn that fits these con
    13·1 answer
  • Two sets of three consecutive integers have a property that the product of the larger two is
    5·1 answer
  • Hello! Can someone please help me with these 2 questions! thank you so much! (i’ll give brainlist)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!