All categories

3 years ago

A number is greater than another number by 5. if their sum is 21, find the number

Mathematics

2 answers:

DochEvi [55]3 years ago

6 0

Answer:

x=13

y=8

Step-by-step explanation:

let the greater number be x and the smaller number be y.

from first condition,

x = y + 5 --------1

from second condition,

x + y = 21

or, x = 21 - y --------2

from equation 1 and 2,

y + 5 = 21 - y

or, 2y = 16

y = 8

now,

putting the value of y in equation 1

x = 8 + 5

= 13

Flura [38]3 years ago

5 0

Answer:

13.

Step-by-step explanation:

x+x+5=21

2x+5=21

2x=16

x=8

You might be interested in

The solution to 5 - 3x> 35 is either x>-10 or -10> x. which solution is correct

velikii [3]

It should be x < -10 because when you divide by a negative number the inequality sign flips.

3 0

3 years ago

Jade wants to build a raised garden bed in her backyard. The garden measures 9 feet in length by 6 feet in width by 4 feet in de

e-lub [12.9K]

Answer:

$864

Step-by-step explanation:

5 0

2 years ago

A line includes the points (4, 8) and (3, 5). What is its equation in slope-intercept form? Write your answer using integers, pr

stich3 [128]

Answer:

A line includes the points (4, 8) and (3, 5) whose equation in slope-intercept form will be :

$y=3x-4$

Step-by-step explanation:

The point slope form: $(x_1,y_1) and(x_2,y_2)$

$(y-y_1)=m(x-x_1)$

where : m = Slope of the line

$m=\frac{y_2-y_1}{x_2-x_1}$

A line includes the points (4, 8) and (3, 5).The equation of the line will be:

$m=\frac{5-8}{3-4}=3$

$(y-8)=3\times (x-4)$

$y-8=3x-12$

$y=3x-4$

(y=mx+c), where c is intercept at y axis.

The above equation represents slope-intercept form of the line.

6 0

3 years ago

Find the circumference and area of a circle A with a diameter of 26 inches.

makkiz [27]

Answer:

Circumference: 81.681 in; Area: 530.929 in

Step-by-step explanation:

To find circumference we use the formula pi x diameter. Which in this case is pi x 26 in, or approximately 81.681 in.

For the area, we use pi x r^2. r = 1/2 d, so r = 13in. Therefore, the area is equal to 169 x pi in, which is about 530.929 in.

5 0

3 years ago

What is an example of a rate of change

nekit [7.7K]

When you have lines in graphs for ex

Y=2x+7
2x is the rate of change

7 is the instant amt if the x=0 (or the y-intercept)

6 0

3 years ago

A number is greater than another number by 5. if their sum is 21, find the number​

A number is greater than another number by 5. if their sum is 21, find the number