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3 years ago

The difference between two numbers is 20. their sum is 14.find the numbers

2 answers:

8 0

Let the two numbers be x and y. The sum of x and y is 14 and the difference is 20. We can write a system of equations and solve:

$x-y=20 \\
x+y=14 \\
2x=34 \\
x=17$

Then substitute x back into one of the equations to find y:

$x+y=14 \\
17+y=14 \\
y=-3$

So the two numbers are 17 and -3

irina [24]3 years ago

6 0

(17,-3) 20 apart and 14 in sum

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Solve for r and t: 6r - 3t = 6 6r + 8t = -16

MAVERICK [17]

Multiply the first equation with (-1)
you should get this

-6r + 3t = -6
6r + 8t = -16

start to eliminate

11t = -22

divide by 11

t = -2

substitute

6r - 3(-2) = 6
6r + 6 = 6
6r = 6 - 6
6r = 0
r=0

8 0

3 years ago

(-10) + 3 = 10 - 3 is true or false???

Goshia [24]

(-10) + 3 = -(10 - 3) = -7

10 - 3 = 7

-7 ≠ 7

FALSE

3 0

3 years ago

Please help. I dont really understand this, you can even just explain it to me and Ill give you brainliest and 30 points :)

polet [3.4K]

When any shape is inscribed in a circle, it means that the shape is within the circle but all of the corners are touching the circle. So this could just look like a square within a circle with the corners of the square touching the circle but not going outside of the borders of the circle. Repeat this process with the other shapes. The central angle used to locate the vertices is found by taking the number of sides on the shape and divide it by 360 (the angle of a circle). So for a square with 4 sides, you would take 360/4 and get 90 degrees. This means that each angle within the square is 90 degrees. That 90 degrees is the interior angle of the polygon (for a square specifically). Then what you do is look at the circle and draw a dot at the center of it. You can use a protractor for this part if you want but you would find the central angle by picking a point on the circle and drawing a line to the center dot, then you rotate however many degrees you found in the interior angle of the polygon and you would draw a new line from the center of the circle to that point. You will continue this process until you have gone back to your starting point on the circle. The amount of times it takes you to repeat the process should be the amount of sides the polygon has that you are trying. Interior angle and central angle should be the same for the individual shapes but it would be different for different shapes like a square and an octagon because there are a different amount of sides.

4 0

3 years ago

Your school's football team scored 49 points. Your team's score was 19 points more than the opponent's score s. Write and solve

solmaris [256]

Answer:

39 points

Step-by-step explanation:

Your school's football team scored 49 points.

Your team's score is 19 points more than the opponents score

The opponent score is represented as S

Since the total points that was scored is 49 and your team score is 19 then the equation can be written as follows

S+ 19= 49

Solve for S

S= 49-19

S= 30

Hence the opponent's score is 30 points

7 0

3 years ago

ANSWER ASAP! In an arithmetic sequence, a17 = -40 and

dsp73

Answer:

The Recursive Formula of sequence is: 8, 5, 2, -1, -4,...

Step-by-step explanation:

Arithmetic Sequence is a sequence in which every two neighbor digits have equal distances.

For finding the nth term, we use formula

aₙ = a + (n - 1) d

where, aₙ = value of nth term

a = First term

n = number of term

d = difference

We have given that,

a₁₇ = -40 ⇒ a₁₇ = a + (17 - 1)d

⇒ -40 = a + 16d → (1)

Also, a₂₈ = -73 ⇒ a₂₈ = a + (28 - 1)d

⇒ -73 = a + 27d → (2)

Solving, equation (1) and (2), We get

a = 8, d = -3

Hence, First term = a = 8

Second term = a + d = 8 - 3 = 5

Third term = 5 + d = 2

Fourth term = 2 + d = -1

Thus, The Arithmetic Sequence is: 8, 5, 2, -1, -4,...

8 0

3 years ago