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
Kay [80]
3 years ago
12

3x – 2y = 7 y = x + 2 What the answer to this?

Mathematics
1 answer:
kogti [31]3 years ago
5 0

Answer:

{x,y}={−3,−1}

Step-by-step explanation:

You might be interested in
SOMEONE HELP ME PLS I DONT UNDERSTAND AND GIVE ONE OF THE SELECTED OPTIONS PLS :)
VLD [36.1K]
X = 130°

they are alternate exterior angles. the one you have highlighted is correct.
4 0
2 years ago
Jon overdrew his checking account and now has a balance of –$75. How much money does Jon need to deposit in his account to break
adell [148]
Cause it’s -$75 he would have to put $75 to achieve a balance of $0
6 0
3 years ago
Read 2 more answers
What is the area of a regular 16-gon with a radius of 15 feet? Round your answer to the nearest tenth.
Sedbober [7]

Split up the 16-gon into 16 congruent isosceles triangles. Cut each of these isosceles triangles in half to get a right triangle.

The radius of the 16-gon corresponds to the hypotenuse of any of these 32 right triangles. As you probably know, the area of a triangle is half the product of its base and height. For a right triangle, the base and height can be taken to be the two legs. So you need to find their lengths.

Recall that the exterior angles of any convex polygon sum to 360º in measure. For a regular polygon, these angles are all congruent. There are 16 of them in this case, so they each have measure (360/16)º = 22.5º.

Interior angles are supplementary to exterior angles, which means each interior angle of the 16-gon has measure (180 - 22.5)º = 157.5º.

When we split up the 16-gon into isosceles triangles, the "base angles" are equal in measure to half the measure of the interior angles, since each hypotenuse bisects the interior angle. So each base angle has measure 78.75º.

In each right triangle, we then have base <em>b</em> and height <em>h</em> such that

sin(78.75º) = <em>h</em>/15

cos(78.75º) = <em>b</em>/15

Solve for <em>h</em> and <em>b</em> to get

<em>b</em> = 15 cos(78.75º)

<em>h</em> = 15 sin(78.75º)

Then the area of each right triangle is

1/2 <em>b h</em> = 225/2 sin(78.75º) cos(78.75º) = 225/4 sin(157.5º)

and so the area of the 16-gon is

32(1/2 <em>b h</em>) = 1800 sin(157.5º) ≈ 688.8 sq. ft.

4 0
3 years ago
1. The ages of Sonal and Manoj are in the ratio of 7:5. Ten years hence, the ratio of their ages will be 9:7. Find the present a
sesenic [268]

Answer:

Ratio of present ages of Sonal and Manoj = 7:5

Let us consider the ages of Sonal and Manoj to be 7x yrs. and 5x yrs. respectively.

After 10 years, ratio of their ages = 9:7

A/q,  7x+10/5x+10 = 9/7

or     9 (5x+10) = 7 (7x+10)

or     45x + 90 = 49x + 70

or      49x - 45x = 90 - 70

or      4x = 20

or       x  =  20/4  =  5 .

Therefore, present age of Sonal = 7x yrs. = 7 x 5 yrs. = 35 yrs.

                    present age of Manoj = 5x yrs. = 5 x 5 yrs. = 25 yrs.              

Step-by-step explanation:

You helped me before so thank you

4 0
3 years ago
What is the value of mza+mZb?<br>a<br>124°<br>O<br>34<br>56<br>90°<br>180°<br>om​
alexira [117]

Answer:

90°

Step-by-step explanation:

180-124=56 so angle a is 56 and a=c so c would also be 56 next you'd have to add the right angle with angle c. 90+56=146 then to get the angle for b you would have to subtract 180-146 which is 34

34+56=90°

7 0
3 years ago
Read 2 more answers
Other questions:
  • A rectangular swimming pool measures 16
    11·1 answer
  • What is the area of this figure enter your answer in the box 4cm 5cm 5cm​
    7·2 answers
  • A satellite system consists of n components and functions on any given day if at least k of the n components function on that da
    10·1 answer
  • Which fraction has a repeating decimal as its decimal expansion?<br> 3/25 3/16 3/11 3/8
    10·2 answers
  • Index laws for zeros. Can anyone help me?
    12·1 answer
  • elena wants to paint her jewelry box blue.the jewelry box is in the shape of a cube and it has an edge length of 4 in. how much
    9·1 answer
  • Which fraction is not equal to 2/3?
    12·2 answers
  • Which triangles are similar to triangle FDG? help me asap I'm not understanding this.​
    12·1 answer
  • A goalie make 12 saves in 3 games. What is the rate of saves per game?
    12·1 answer
  • I NEED HELP, IF LINK = REPORT FOR MODERATORS TO MODERATE (I think they should start something that doesn’t let us post links)
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!