HELP PLS I WILL MARK BRAINLIEST PLS I NEED SOME HELP!!!

Answer:

x = 147/5 and y = 78

Step-by-step explanation:

First solve by substitution and put 78 into y in -5x + 2y = 9 so you get 147/5

then plug 147/5 into x and find y

Answer:

x = -147/5 , y = 78

Step-by-step explanation:

- 5x + 2y = 9

Y = 78

Substitute the second equation into the first

-5x + 2(78) = 9

-5x +156 = 9

Subtract 156 from each side

-5x+156-156 = 9-156

-5x =147

Divide each side by -5

-5x/-5 =147/-5

x = -147/5

Answer:

I am also truly sorry

Step-by-step explanation:

Answer: 29

Step-by-step explanation:

replace n with 8

Answer:

c)

Step-by-step explanation:

(-4,2)  ; (4,-5)

[tex]Slope=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\\\=\frac{-5-2}{4-[-4]}\\\\=\frac{-7}{4+4}\\\\=\frac{-7}{8}[/tex]

m = -7/8 ;   (-4,2)

equation: y - y1 = m(x - x1)

[tex]y-2=\frac{-7}{8}(x-[-4])\\\\y-2=\frac{-7}{8}(x+4)\\\\y-2=\frac{-7}{8}x +\frac{-7}{8}*4\\\\y=\frac{-7}{8}x-\frac{7}{2}+2\\\\y=\frac{-7}{8}x-\frac{7}{2}+\frac{4}{2}\\\\y=\frac{-7}{8}x-\frac{3}{2}\\[/tex]

Answer:

Cost, C = $28410.72

Step-by-step explanation:

We have, a concrete pillar has the shape of a cylinder.

Diameter of pillar is 8 m and ts height is 9 m

If concrete costs $87 per cubic meter, it is required to find the concrete cost for the pillar. For this lets find the area of cylindrical shape. So,

[tex]A=2\pi rh+2\pi r^2\\\\A=2\times 3.14\times 4\times 9+2\times 3.14\times 4^2\\\\A=326.56\ m^2[/tex]

The cost of pillar at the rate of $87 per cubic meter will be :

[tex]C=326.56\times 87\\\\C=\$28410.72[/tex]

Answer:

hope this helps you

Answer:

I think y=log0.5x

Step-by-step explanation:

Answer: It's D, y=log6x

Step-by-step explanation: Edge

Answer:

The mean will increase by 2.5

Step-by-step explanation:

The mean is just another word for the average of the data set. You can find this by adding all of the values and dividing by the number of values there are. (i.e 2+4+7+6+3+6+7 divided by 7). The original mean is 5. If you add 25, the average will increase to 7.5

Answer:

increased 2.5

Step-by-step explanation:

f(x)=4x^2+3x+13

Plug in x=1:

f(1)=4(1)^2+3(1)+13

=4*1+3+13

=4+16

=20

Answer:

f(1) = 20

Answer:

20

Step-by-step explanation:

Answer:

x = 38

Step-by-step explanation:

A straight line is 180°. We are given 134 and 84. We can find the value of ∠QLM and ∠QML by taking the given numbers and subtract it from 180:

180 - 134 = 46

180 - 84 = 96

All triangles add up to 180. And we already have two of the angles in the triangle. So to find x, we take 46 and 96, add, and subtract from 180:

46 + 96 = 142

180 - 142 = 38

Answer:

x = 38

Step-by-step explanation:

∠ KLO and ∠ MLO are adjacent and supplementary, thus

∠ MLO = 180° - 134° = 46°

The external angle of a triangle is equal to the sum of the 2 opposite interior angles.

∠ NMO is an external angle of the triangle, thus

x + 46 = 84 ( subtract 46 from both sides )

x = 38

Answer:

$300

Step-by-step explanation:

Money that she earns per hour:

$180÷18=$10

30 hours:

30×$10=$300

Answer:

$300

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

We can find the slope given two points

m = (y2-y1)/(x2-x1)

   = (-10- -5)/(0 -1)

   (-10+5)/(-1)

     - 5/-1

     5

Answer:

5

Step-by-step explanation:

Use the formula:

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Plug in the numbers/coordinates accordingly:

[tex]m=\frac{-10+5}{0-1}[/tex]

[tex]m=\frac{-5}{-1}[/tex]         →         [tex]m=\frac{5}{1}[/tex]

m = 5

Answer:

4x 32x + 1 = 28x + 1

Step-by-step explanation:

4x-32x+1

=-28x+1

Answer:

BO

Step-by-step explanation:

bo becuase radius is the line that touches the center of the circle

Answer:

bo

Step-by-step explanation:

if you look b is the  only on touching that the O's dot

Answer:

a=b+12=b=c+4= the relationship between the two of them is 12/3=4

Answer:

a=c+16

Step-by-step explanation:

b=c+4 and a=b+12

so

a=(c+4)+12

a=c+4+12

a=c+16

Answer:

f(x)=-3x+14

Step-by-step explanation:

y +1=-3(x–5)

y +1=-3x+15

y= -3x+15-1

f(x) = -3x + 14

Answer:

b

Step-by-step explanation: sike idk

Answer:

i say 130 pi

Step-by-step explanation:

it is the closest one

area = 2πrh+2πr2=2·π·5·8+2·π·52≈408.40704

Answer:

24

Step-by-step explanation:

Answer:

hi I hope this helps you

Answer:

I think C

Step-by-step explanation:

Hope it was Right.

Answer:

49°

Step-by-step explanation:

Lines k and n seem to be parallel, so that means that 7x = 2x + 35 (corresponding angles are congruent), and x = 7. That means that angle A = 2x + 35 = 14 + 35 = 49° (because they are vertical angles).

The measure of <A is 49 degree.

Please see the attached picture for full solution

Hope it helps

Good luck on your assignment..

Answer:

(1, 5)

Step-by-step explanation:

Reflecting across the y-axis is the same thing as adding a negative to the y-value.

double negative 5 is the same thing as positive 5 so

(1, 5) is your answer

Answer:

d

Step-by-step explanation:

Answer:

5.6 ft

Step-by-step explanation:

sin a = 8/10

sin a = x/7

8/10 = x/7

x = 8/10 * 7 = 28/5 = 5.6 ft

Answer:

List the factors of 12

1,12

2,6

3,4

That is the side lengths of the 3 rectangles

All the areas will be 12 because they are the factors 12

factors multiply to be a number

(length + width) x 2 = perimeter

1+12=13x2=26

1 by 12 has a perimeter of 26 and area of 12

2 by 6 has a perimeter of 16 and area of 12

3 by 4 has a perimeter of 14 and area of 12

Hope this helps. If you have any questions you can ask

Step-by-step explanation:

Answer:

48,650

Step-by-step explanation:

3,475 times 14 bc thats how many days are in 2 weeks(obviously)

Answer:

1.5

Step-by-step explanation:

We can set up the equation 0.50X = 0.750

Divide by 0.5 and we get .75/.5=1.5

Answer:x=5 and y=8

Step-by-step explanation:

The value of the variable 'x' and 'y' will be 5 and 8, respectively.

It is a polygon with four sides. The total interior angle is 360 degrees. A parallelogram's opposite sides are parallel and equal, and each angle is 90 degrees. Its diagonals intersect in the center.

GHIJ is a parallelogram. Then the equation is given as,

HI = GJ

5x - 10 = 7x - 20

7x - 5x = 20 - 10

2x = 10

x = 5

Then the other equation is given as,

GH = IJ

3y = 5y - 16

5y - 3y = 16

2y = 16

y = 8

The value of the variable 'x' and 'y' will be 5 and 8, respectively.

More about the parallelogram link is given below.

https://brainly.com/question/1563728

#SPJ2

Answer:

5310

Step-by-step explanation:

She gets 270 extra every month and if you multiply that by 3 then you add that number onto 4500 then you get 5310

Answer:

5359.57

Step-by-step explanation:

4500x1.06^3=5359.57

it is ^3 because it is after three months

85% is the percentage

pls mark as brainliest

Answer::

Step-by-step explanation:

Answer:

Solve for area

A≈1134.11cm²

r Radius

19

cm

Solution

A=πr2=π·192≈1134.11495cm²

Answer: 1133.54

Step-by-step explanation:

The formula of area of a circle: A = [tex]\pi[/tex]r squared

All you have to do is plug the numbers in, so A= 3.14 (19) squared. Solve

19 times 19 = 361, and 3.14 times 361 = 1133.54