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
crimeas [40]
3 years ago
9

40 POINTS is (4,7) a solution of equations? Explain your answer 2x+4y=36 3x-4y=-6

Mathematics
2 answers:
dsp733 years ago
6 0
<span>2x + 4y = 36
3x - 4y = -6
--------------add
5x = 30 
  x = 6

</span>2x+4y=36 
2(6)+4y=36 
12 + 4y = 36
4y = 24
  y = 6

answer
<span>(6, 6) is a solution of equations
</span><span>(4,7) is NOT a solution of equations</span>
Alona [7]3 years ago
5 0

using (4,7)

2(4) +4(7) = 8 +28 =36 True

3(4) - 4(7) = 12 -28 =-16 False (-16 is not -6)

 (4,7) is not a solution

You might be interested in
G is the centroid and BE = 12. Find BG and GE.
Alona [7]
The centroid is the intersection point <span>of the medians.
</span><span>So the distance from any vertex to the </span><span>centroid is 2/3 the length.
</span><span>BG=1/3*BE and GE=2/3*BE
</span><span>
So answer: </span>BG = 4, GE = 8
7 0
3 years ago
Part of a cheerleading routine is throwing a flyer straight up and catching her on the way down. The flyer begins this move with
umka2103 [35]

Answer:

Step-by-step explanation:

Given that a flyer begins from earth and thrown up with a velocity of 30 ft/sec vertically.

u = initial velocity = 30 :   a = -g = 32 ft/sec^2

s(0) =initial height  =4 ft.

We have the equation

where u = initial velocity : v= final velocity : s = distance travelled and a = acceleration.  Here final velocity is found out as follows

Substitute to get

Since v cannot be negative, the flyer’s center of gravity cannot ever reach 20 feet.

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

To reach 25 ft, put s = 25

and v must be atleast 0

Then we have

Hence if thrown with initial velocity of 40 ft /sec, it will reach a height of 25 ft.

6 0
3 years ago
Describe a real word world problem you could solve using a proportion​
katen-ka-za [31]

Answer:

if dad used 6 gallons every week then what will he use for 7 weeks?

Step-by-step explanation:

6 muliplied by 7 = answer :)

5 0
3 years ago
if the length of a rectangle is decreased by 2cm and the width is increased by 6 cm the result will be a square the area of this
Nastasia [14]

The area of the rectangle is 105 square cm

<h3>How to determine the rectangle area?</h3>

Represent the dimensions of the rectangle with x and y

So, the length of the square would be:

Length = x - 2

Width = y + 6

The areas are then calculated as:

Rectangle = xy

Square = (x -2)(y + 6)

The relationship between the areas is:

(x -2)(y + 6) = 64 + xy

Expand

xy + 6x - 2y - 12 = 64 + xy

This gives

6x - 2y - 12 = 64

Add 12 to both sides

6x - 2y= 76

Divide through by 2

3x - y = 38

By trial by error, we have:

x = 15 and y = 7

The rectangle area is then calculated as:

Rectangle = xy

This gives

Rectangle = 15 * 7

Evaluate

Rectangle = 105

Hence, the area of the rectangle is 105 square cm

Read more about areas at:

brainly.com/question/27683633

#SPJ1

8 0
2 years ago
I NEED HELP ON THIS QUESTION PRONTO
Mandarinka [93]
7.4 cans, multiply the height and base 27x11=297 divided by 40= 7.4, i really hope this helps and sorry again if im wrong!!
5 0
2 years ago
Other questions:
  • 12 is 25% of what number?​
    11·1 answer
  • For what numbers x, 0 ≤ x ≤ 2π, does cos x = -1?
    11·1 answer
  • How many times does 2 go into 9
    6·2 answers
  • The temperature dropped 5 degrees each hour for 7 h. Use an integer to represent the total change in temperature.
    15·2 answers
  • PLZZZZZZ NEED HELP!!!!!!!!!!
    8·1 answer
  • How to find measures of parallelogram with algebra?
    10·1 answer
  • What is the solution to the equation?
    10·1 answer
  • Giving Brainliest, hard question ,pretty sure nobody knows this
    13·2 answers
  • WHATS THE ANSWER DO NOT GIVE ME A LINK TO ANYTHING JUST THE ANSWER
    5·1 answer
  • What is the value of the expression shown below?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!