All categories

2 years ago

Solve by elimination: (x + 7y = 12) (3x - 5y = 10) *

Mathematics

1 answer:

Nadusha1986 [10]2 years ago

8 0

Answer:

Step-by-step explanation:

You might be interested in

How many sides does a polygon have if the sum of the measures of the interior angles is 3960

anastassius [24]

Answer: the polygon has 20 sides.

Step-by-step explanation:

The formula for determining the sum of the measure of the interior angles in a regular polygon is expressed as (n - 2) × 180.

if the sum of the measures of the interior angles is 3960

degrees. This means that

(n - 2) × 180 = 3960

Expanding the brackets by applying the distributive property, it becomes

180n - 360 = 3960

180n = 3960 - 360

180n = 3600

Dividing both sides by 180, it becomes

n = 3600/180

n = 20

6 0

3 years ago

Type the correct answer in each box.

Mariulka [41]

Answer:

$(x-5)^2+(y+4)^2=100$

Step-by-step explanation:

step 1

Find the radius of the circle

we know that

The distance between the center and any point that lie on the circle is equal to the radius

we have the points

(5,-4) and (-3,2)

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

substitute the values

$r=\sqrt{(2+4)^{2}+(-3-5)^{2}}$

$r=\sqrt{(6)^{2}+(-8)^{2}}$

$r=\sqrt{100}\ units$

$r=10\ units$

step 2

Find the equation of the circle

we know that

The equation of a circle in standard form is equal to

$(x-h)^2+(y-k)^2=r^2$

where

(h,k) is the center

r is the radius

we have

$(h,k)=(5,-4)\\r=10\ units$

substitute

$(x-5)^2+(y+4)^2=10^2$

$(x-5)^2+(y+4)^2=100$

6 0

2 years ago

Anyone knows how to do integration? Pls help! URGENT!

MrRa [10]

Uhhhhhhh I don't really know look on quizlet

8 0

2 years ago

Four students were asked to label angles in pairs of triangles. Their drawings are shown below. Tatyanna Triangle A B C. Angle B

valentina_108 [34]

Answer:

Anders

Step-by-step explanation:

7 0

2 years ago

Ndicate the answer choice that best completes the statement or answers the question.

kirill115 [55]

Answer:

I think the answer is "adjacent, supplementary".

4 0

2 years ago