whats the solution to the given system of equations?

-5x+8y=-36
5x+7y=6

Answer:

12 boys and 18 girls

Step-by-step explanation:

the ratio from boys to girls is 2 to 3

12/2=6

18/3=6

both equal 6 meaning that both are proportional meaning that A is the correct answer  

Answer:

a.

Step-by-step explanation:

12 and 18 is equal to 2/3

Answer:

.op

Step-by-step explanation:

Answer:

(4,-8)

Step-by-step explanation

hope it helps

Answer:

it's (4,-6)

Step-by-step explanation:

the first answer given by the other user is incorrect.

Step-by-step explanation:

50 is the answer I

jjsndn

Answer:

Simplified answer for 13x^8 + 18:

x​ x • (13x7 + 18)

Answer:

x(13x^7+18)

Step-by-step explanation:

Answer:

y=x+10

Step-by-step explanation:

it's a guess. it goes up 1 over 1 so the "m" in y=mx+b has to be 1. so x stands alone. the line looks like it begins at 10 so the b will equal 10

Answer:

y = 5x + 10

Step-by-step explanation:

Line is passing through the points (2, 20) & (4, 30)

Slope of line (m) = (30 - 20)/ (4 - 2) = 10/2 = 5

y - 20 = 5(x - 2)

y = 5x - 10 + 20

y = 5x + 10

Answer:

c

IT was pretty easy

Answer:

slope = 4/11

Step-by-step explanation:

To find the slope, use delta y/ delta x

(4,6) (-7,2)

(2-6)/(-7-4)

(-4)/(-11)

slope = 4/11

Let m = slope

m = difference of y-values divided by the difference of x-values.

m = (2 - 6)/(-7 - 4)

m = -4/-11

m = 4/11

Answer:

Your answer should be C. 1/2(162 - 38)

Step-by-step explanation:

Answer:

11

Step-by-step explanation:

We can buy 10 gallons of gas with $30, whose unit price is $2.85.

The rate calculated for one quantity of something is called unit rates.

Given that, the gas costs $2.85 per gallon, we need to find how many whole gallons of gas could you buy with $30.00.

Let the x gallons cost $30.00

Therefore,

2.85x = 30

x = 30 / 2.85

x = 10.52

x ≈ 10

Hence, we can buy 10 gallons of the gas from $30.

Learn more about unit rates, click;

https://brainly.com/question/29781084

#SPJ2

Answer:

Wait I don't understand the question... It looks like it is already answered- :(

Step-by-step explanation:

Answer:

x = 12, y =

Step-by-step explanation:

Let x=# of Ornaments and y=# of boxes of candy.  The system of equations is:

x + y = 15

1.5x + 3y = 27

And solve via elimination

1.5 x = 18

x = 12, y =3

HAVE A GOOD DAY

Total = price per hour x number of hours + travel fee.

Total = 27h + 18

Answer:

11,7,3,-1,-5,-9

Step-by-step explanation:

count by 4

Answer:

514 m = width of the river to the nearest meter

Step-by-step explanation:

You must memorize the definitions of the trig functions and then these types of problems are easy.

You have a right triangle where the 100 m is the adjacent side to the 79° angle.  You are looking for the side opposite the 79° angle.  So, you need to use the tan function which is defined as opposite side/adjacent side

Let x = the length of the opposite side (width of river)

Tan 79 = x/100

100 tan 79 = x

x = 514 m = width of the river to the nearest meter

The tangent or tanθ in a right angle triangle is the ratio of its perpendicular to its base. The width of the river is 514.455 meters.

The tangent or tanθ in a right angle triangle is the ratio of its perpendicular to its base. it is given as,

[tex]\rm Tangent(\theta) = \dfrac{Perpendicular}{Base}[/tex]

where,

θ is the angle,

Perpendicular is the side of the triangle opposite to the angle θ,

Base is the adjacent smaller side of the angle θ.

As it is given that you walk 100 meters to the right of the stake and measure a 79° angle between the stake and the boulder. Therefore, using the tangent angle the width of the river can be written as,

[tex]\rm Tangent(\theta) = \dfrac{Perpendicular}{Base}\\\\\\\rm tan(79^o) = \dfrac{\text{Width of the river}}{100\ meter}\\\\\\\text{Width of the river} = tan(79^o) \times 100 = 514.455\ meters[/tex]

Hence, the width of the river is 514.455 meters.

Learn more about Tangent (Tanθ):

https://brainly.com/question/10623976

Answer:c+t<_27

Step-by-step explanation:

Answer:

-5

Step-by-step explanation:

2x=-10

x=-5

Answer:

x = -5

Step-by-step explanation:

2x - 2 = -12

(Add 2 on both sides)

2x - 2 (+2) = -12 (+2)

(simplify)

2x=-10

(Divide by 2 on both sides)

2x/2 = -10/2

(Simplify)

x = -5

Hope this helps :)

Answer:

The SI unit for length is the meter (abbreviated m); its definition has also changed over time to become more accurate and precise. The meter was first defined in 1791 as 1/10,000,000 of the distance from the equator to the North Pole.

Answer:

Step-by-step explanation:

1. I do not agree with Ahmed.

2. 0.45cm,65mm,90m.

3. I don't agree with Ahmed because when all the lengths are put in the same unit we have: 0.45cm,6.5cm,9000cm

PLEASE MARK BRAINLIEST.

Answer:

The answer is B and the guy above me is correct.

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

cs i'm right

Answer:

y = 2x + 2

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope (gradient) and c the y- intercept )

Here m = 2 , then

y = 2x + c ← is the partial equation

To find c substitute (1, 4) into the partial equation

4 = 2 + c ⇒ c = 4 - 2 = 2

y = 2x + 2 ← equation of line

Answer: y=2x+2

Step-by-step explanation:

using angle sum property

we get

110+35+(x+12)=180

(x+12)=180-145

(x+12)= 35

x= 35-12

x= 23

Answer:

Angles in a triangle are sum up to 180 degrees.

35 + 110 + (x+12)=180

145+x+12=180

157+x=180

x=180-157

x=23 degrees

Answer:

He bought 9 books.

Step-by-step explanation:

If $18 can by 3 books to find how much one book costs we divide 18 by 3 and get six.

54÷6=9

I hope this helps you :)

Answer:

answer is the ratios are not equivalent or not in proportion

Step-by-step explanation:

you can find it by crops multiplication

4/7

8/11

4*11

8*7

44=56

Therefore it is not in proportion

Answer:  4 : 7 = 8 : 14

8 : 11 = 16 : 22

Step-by-step explanation:

The ratio is already in lowest terms so I found an equivalent ratio by multiplying both terms by 2.

The ratio is already in lowest terms so I found an equivalent ratio by multiplying both terms by 2.

Answer:

The equation is:

y = -15*x + 1200

and:

a = 120

b = 70

c = -1500

Step-by-step explanation:

This seems to be a linear relationship.

A linear relationship can be written as:

y = a*x + b

where a is the slope and b is the y-axis intercept.

For a line that passes through the points (x1, y1) and (x2, y2), the slope can be written as:

a = (y2 - y1)/(x2 - x1).

Here we know that our line passes through the points (60, 300) and (20, 900)

Then the slope of this line is:

a = (900 - 300)/(20 - 60) = 600/(-40) = -15

Then this line is something like:

y = -15*x + b

To find the value of b, we know that this line passes through the point (60, 300) then when x = 60, we have y = 300.

Replacing these values in the above equation we get:

300 = -15*60 + b

300 + 15*60 = b = 1200

Then:

y = -15*x + 1200.

Now that we have this equation, we can complete the table.

a is the value for y, when x = 72

Then we can replace x by 72 in the above equation:

a = -15*72 + 1200 = 120

a = 120

b is the value of x when y = 150, then we need to replace y by 150

150 = -15*b + 1200

150 - 1200 = -15*b

(150 - 1200)/-15 = b = 70

then:

b = 70

c is the value of y when x = 180, then we need to replace x by 180.

c = -15*180 + 1200

c = -1500

Answer:

16640x²

Step-by-step explanation: