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
MrRa [10]
3 years ago
8

What is the y-value in the solution to this system of linear equations?

Mathematics
2 answers:
baherus [9]3 years ago
4 0

Answer:

Option  A.)−4

Step-by-step explanation:

we have

4x+5y=-12 -----> equation A

-2x+3y=-16 -----> equation B

Solve the system of equations by elimination

Multiply the equation B by 2

2*(-2x+3y)=-16*2

-4x+6y=-32 -----> equation C

Adds equation A and equation C

4x+5y=-12

-4x+6y=-32

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

5y+6y=-12-32

11y=-44

y=-4

Alik [6]3 years ago
3 0

Answer with Step-by-step explanation:

We are given a system of linear equations:

4x + 5y = −12

-2x + 3y = −16

Multiply second equation by 2 and add it to first equation.

4x+5y-4x+6y= -12-32

⇒ 11y= -44

Dividing both sides by 11

⇒ y= -4

Hence, the y-value in the solution to the system of linear equations

4x + 5y = −12

-2x + 3y = −16    is:

A.)−4

You might be interested in
A woman stands 15 ft from a statue. She looks up at an angle of 60° to see the top of the statue. Her eye level is 5 ft above th
Novay_Z [31]

Answer:

31 ft

Step-by-step explanation:

Let the Woman's Eye level be at Band the top of the statue be at C in the attached diagram.

We want to calculate the height CE of the statue.

CE=CD+DE

First we find CD using trigonometry

Tan 60=CD/15

CD=15 X Tan 60

=25.98 ft

DE=AB= 5ft( Sides of a Rectangle)

Therefore the height of the statue

CE=CD+DE = 25.98+5=30.98 ft

=31ft( to the nearest foot)

4 0
3 years ago
Simplify the expression. Write the answer using scientific notation. 0.3(8.2 x 10^-3)
olchik [2.2K]

Answer:

0.3(8.2 x 10^-3) = 2.46 X 10 ^ -3

Step-by-step explanation:

We need to solve the equation 0.3(8.2 x 10^-3) and write answer in scientific notation.

Solving,

= 0.3(8.2 x 10^-3)

= 0.3 * 0.0082

= 0.00246

Writing in scientific notation

= 2.46 X 10 ^ -3

So, after solving the expression 0.3(8.2 x 10^-3) the result is 2.46 X 10 ^ -3.

8 0
3 years ago
Find tan a and sin b if a=10 and b=7...... please help this is for trigonometry
xz_007 [3.2K]

I think it’s R maybe
4 0
3 years ago
Every, 5 hours, a machine produces 210 baskets. What is the unit rate of this proportional
sukhopar [10]

Answer:

the unit rate is 42 baskets per hour. this is because 210 divided by 5 is 42.

8 0
3 years ago
Read 2 more answers
I need help on this geometry question please! thank you❤
Liula [17]
180-116=54
90-53=37
90-54=36
180-(36+37)=180-73=107

x=107

Sorry if it is a wrong answer, but i tried, i think it is right
8 0
3 years ago
Other questions:
  • Select the correct answer. How can you justify that the diagonals of a rhombus bisect opposite interior angles?
    9·1 answer
  • Subtract<br> (2+8i)-(7+2i)
    11·1 answer
  • What is the volume of the cylinder?
    11·1 answer
  • I need help. This just doesn't make sense
    7·1 answer
  • 8x raise 2 -36 is a linear expression true or false
    10·1 answer
  • Bobbie wants to make $2.00 using dollars, half dollars, and quarters. How many different ways can she make $2.00?
    8·1 answer
  • Review the graph of function g(x). On a coordinate plane, y = g (x) curves down through (negative 5, 2), has an inflection point
    11·2 answers
  • Use Factors to simplify<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B%20%7B8x%7D%5E%7B2%7D%20%20-%2012x%7D%7B%20%20%7B4x%7D
    15·1 answer
  • Solve for x.<br> 8x + 13<br> 12x +7&gt;&gt;
    8·2 answers
  • An engine is operating at 25% of its full power. Which number line shows a point that represents 25%?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!