All categories

3 years ago

A pair of integers whose sum is 20

Mathematics

2 answers:

sergij07 [2.7K]3 years ago

7 0

Answer:

10+10

Step-by-step explanation:

when u add them they give you 20 they're integers

ikadub [295]3 years ago

5 0

Answer:

10+10

Step-by-step explanation:

You might be interested in

You are ordering softballs for two softball leagues. The Pony Leagues uses an 11-inch softball prices at $2.75. The Junior Leagu

Zigmanuir [339]

Answer:

I have ordered 30 softballs of 11-inch and 50 soft balls of 12-inch.

Step-by-step explanation:

Let the number of 11-inch softball be 'x'.

Let the number of 12-inch softball be 'y'.

Given:

Total number of soft balls = 80

Now we know that.

Total number of soft balls is equal to sum of the number of 11-inch softball and the number of 12-inch softball.

framing in equation form we get;

$x+y=80 \ \ \ \ equation \ 1$

Also Given:

Price of 11- inch softball = $2.75

Price of 12-inch softball = $3.25

Total Bill = $245

Now we know that;

Total bill of soft balls is equal to sum of Price of 11- inch softball multiplied by the number of 11-inch softball and Price of 12- inch softball the number of 12-inch softball.

framing in equation form we get;

$2.75x+3.25y = 245 \ \ \ \ equation \ 2$

Now Multiplying equation 1 by 3.25 we get;

$3.25(x+y)=80\times 3.25\\\\3.25x-3.25y = 260 \ \ \ \ equation \ 3$

Now Subtracting equation 2 from equation 3 we get;

$(3.25x+3.25y)-(2.75x+3.25y)=260-245\\\\3.25x+3.25y-2.75x-3.25y = 15\\\\0.5x = 15$

Dividing both side by 0.5 we get;

$\frac{0.5x}{0.5}= \frac{15}{0.5}\\\\x= 30$

Now Substituting the value of 'x' in equation 1 we get;

$x+y=80\\\\30+y=80\\\\y =80-30 =50$

Hence I have ordered 30 softballs of 11-inch and 50 soft balls of 12-inch.

6 0

3 years ago

What is the solution of the system?

kakasveta [241]

Divide the first equation by 2 and add the result to the second equation. This will eliminate x.

... (-4x -2y)/2 + (2x +4y) = (-12)/2 +(-12)

... 3y = -18 . . . . . collect terms

... y = -6 . . . . . . . divide by 3

Substitute this into either equation to find x. Let's use the second equation, where the coefficient of x is positive.

... 2x +4(-6) = -12

... 2x = 12 . . . . . . . . add 24

... x = 6 . . . . . . . . . . divide by 2

The solution is (x, y) = (6, -6).

8 0

4 years ago

Find the maximum and minimum values of the function. Y=-cos8x

natka813 [3]

Answer:

Step-by-step explanation:

Given a sinusoidal function (sine function or cos function) in the form

y = A Cos (Bx), we can say that A is the amplitude.

Amplitude defines the function's maximum and minimum.

The maximum of this form of function is A and the minimum is -A.

The function given is y = -Cos(8x), so A is -1

Thus, maximum value is 1 and minimum value is -1.

Correct answer is A

8 0

3 years ago

Find the coordinates of the midpoint of the segment with the given pair of endpoints. J(6, 6); K(2, –4)

Levart [38]

Answer:

(4,1)

Step-by-step explanation:

let J(6,6) be x1, y1

let K(2,-4) be x2, y2

midpoint = (x1+x2)/2 , (y1+y2)/2

=(6+2)/2 ,(6-4)/2

= 8/2 ,2/2

=4, 1

3 0

3 years ago

Help!!!!!!!!!!!! !!!!!!!!!!!!

yulyashka [42]

The correct answer is y=2/3x+4 which is the last option :)

6 0

3 years ago

Read 2 more answers