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
andrezito [222]
4 years ago
12

PLEASE HELP!!!!

Mathematics
1 answer:
alina1380 [7]4 years ago
7 0

Answer:

B, D, E  

Step-by-step explanation:

-8x  -  6y = 10

  x + 7y =    9

You can multiply any of these equations by a constant without changing the solution.

B. 4x + 3y = -10 is equivalent to multiplying each side of the first equation by -½.

D. -16x - 12y = 20 is equivalent to multiplying each side of the first equation by 2.

E. 3x + 21y = 27 is equivalent to multiplying each side of the second equation by 3.

A. -2x + 7y = 9 is wrong. The signs don't match those of the second equation.

C. 24x + 18y = 10 is wrong. The signs don't match those of the first equation.

F. x - 14y = -18 is wrong. The coefficient of x should be -2.

You might be interested in
Which expression is equivalent to 96?​
Delicious77 [7]

Answer:

4\sqrt{6}

Step-by-step explanation:

\sqrt{96}

\sqrt{2*2*2*2*2*3}

2*2\sqrt{2*3}

4\sqrt{6}

6 0
3 years ago
2x + 3y = 6
Andreyy89

Answer:

A)

Step-by-step explanation:

You just basically substitute the coordinates into the equation

2x+3y =6

2(0) +3y =6

y=2

5 0
2 years ago
PLEASE HELP <br>I need the answers for all of the ones that I haven't done please. Thank you!
Rudik [331]
#2.

a) 1/4m + 3 = 2

1/4m = -1

m = -4

b) 4y - 3(y + 8) = 12

4y - 3y + 24 = 12

y = -12



For #10, letter b. Do the same thing you did with letter a.
The equation is already given.
You have your y-intercept: -8, and your slope: 3/1.

These two create two different points you can add to your data table.

(0, -8) and (1, 3)

y:-8, 3
x: 0, 1

6 0
4 years ago
In a volcano, erupting lava flows continuously through a tube system about 13 kilometers to the sea. Assume a lava flow speed of
ExtremeBDS [4]

Answer:

26 hours

Step-by-step explanation:

speed = distance/time

s = d/t

st = d

t = d/s

t = (13 km)/(0.5 km/h)

t = 26 h

Answer: 26 hours

8 0
3 years ago
Grandma baked 96 cookies and gave them to her grandchildren. one of the grandchildren, cindy, received 5 fewer cookies than she
Assoli18 [71]
~Hello There!~

Cindy received (96/h) - 5

Hope This Helps You!
Good Luck :)
Have A Great Day ^_^

- Hannah ❤
5 0
3 years ago
Read 2 more answers
Other questions:
  • The equation of line WX is 2x + y = −5. What is the equation of a line perpendicular to line WX in slope-intercept form that con
    9·1 answer
  • Za and Zb are complementary angles. Za measures 78º.<br> What is the measure of Zb?
    11·2 answers
  • Which of these numbers is the most precise approximation of?
    5·2 answers
  • When Amy roller-skates, she moves 90 yards per minute. What is her speed in miles per hour? Round your answer to the nearest hun
    7·1 answer
  • Find the equation of a line passing through the point (1, 1) and having a slope of 3.
    15·1 answer
  • Find the exact length of the third side.<br> 39<br> 36
    6·1 answer
  • In a survey of market, it is found that 143 persons use white toothpaste and 135 use red toothpaste. If 70 of them use both the
    6·1 answer
  • Can someone help me with this problem
    10·1 answer
  • If a researcher needs a sample that is representative of the population they are studying, they could utilize a _______.
    14·1 answer
  • Suppose that the cost of a rental car is $65 for a week plus 0.15 per mile driven.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!