Anyone good with slopes?

Answer:

40 students

Step-by-step explanation:

We do not count the counselors or the principal because they are not students, so we do 83 - 3 = 80, now it is just simple division, for every student there is a parent, so we divide 80 in half, 80 / 2 = 40 students :D

Answer:

[tex]y = -3x +8[/tex]

Step-by-step explanation:

The graph diagram is not given; however, the equation can be solved from the given points

(2,2) and (0,8)

This is represented as:

[tex](x_1,y_1) = (2,2)[/tex]

[tex](x_2,y_2) = (0,8)[/tex]

Calculate slope (m)

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

[tex]m = \frac{8 - 2}{0 - 2}[/tex]

[tex]m = \frac{6}{- 2}[/tex]

[tex]m =-3[/tex]

The equation is calculated using:

[tex]y - y_1 = m(x - x_1)[/tex]

[tex]y - 2 = -3(x - 2)[/tex]

[tex]y - 2 = -3x + 6[/tex]

Add 2 to both sides

[tex]y - 2 +2= -3x + 6+2[/tex]

[tex]y = -3x + 6+2[/tex]

[tex]y = -3x +8[/tex]

Answer:

These are similar triangles.

By changing the length of the base of the corresponding triangle, the 3 interior angles of this triangle remain equal to the original

Therefore, if these triangles are similar, their corresponding sides must give equal ratios to each other:

This means that BF/FE = BC/CD=FC/ED

The total length of line segment BD=BC+CD; BC=6, CD=42; BD=6+42, BD=48

BE=BF+FE; BE=9+?

if BF/FE=BC/CD then 9/BE=6/42; 6/42=3/21 or 1/7. 9/BE=1/7; 1/7=9/BE

1x9=9, 7x9=63

63=BE

Step-by-step explanation:

Answer:BE is equal to 72.

Step-by-step explanation: They are similar triangles. We know CD and BC. So we can find the comparison between the two. And we see that BC x 7 = CD. So the same will be said for BF and FE. We have BF is equal to 9. So 9 x 7 = 63. However, now we need to add the two together in order to get BE. Because BF + FE = BE. So 9 + 63 = 72

pls dont cheat on quiz: ask for extra practice from teacher and ask questions if you don't get material

Answer:

B

Step-by-step explanation:

Negative numbers are always less than positive numbers. √11 will be positive and absolute value | | is how far the number is from 0, so it will be positive

Answer:

<L,<K,<M

Step-by-step explanation:

angle M us the largest angle I think

Answer:

125.84

Step-by-step explanation:

116.52(0.08)=9.32

116.52+9.32=125.84

Answer:

The total is $125.84.

Step-by-step explanation:

The total is equal to the original value (100%) + the tax amount (8%) which equals 108%. To multiply it, we move the decimal two to the left to get our figure (1.08) then multiply that times 116.52. So, 116.52x1.08=125.8416; for dollars I rounded to the nearest cent: $125.84.

Answer:

7 / 15

Step-by-step explanation:

Fraction before painting = 5/6

Fraction left after painting = 11/30

Fracrion used = difference of the fraction before painting and fraction left after painting

Fraction used = 5/6 - 11/30

Lowest common factor of 6 and 30 = 30

5/6 - 11/30 = (25 - 11) / 30 = 14/ 30

Fraction used = 14/30 = 7/15

Answer:

a) 40.

Step-by-step explanation:

a triangle is 180 total

9514 1404 393

Answer:

  a)  E = 6500 -50d

  b)  5000 kWh

  c)  the excess will last only 130 days, not enough for 5 months

Step-by-step explanation:

Given:

  starting excess (E): 6500 kWh

  usage: 50 kWh/day (d)

Find:

  a) E(d)

  b) E(30)

  c) E(150)

Solution:

a) The exces is linearly decreasing with the number of days, so we have ...

  E(d) = 6500 -50d

__

b) After 30 days, the excess remaining is ...

  E(30) = 6500 -50(30) = 5000 . . . . kWh after 30 days

__

c) After 150 days, the excess remaining would be ...

  E(150) = 6500 -50(150) = 6500 -7500 = -1000 . . . . 150 days is beyond the capacity of the system

The supply is not enough to last for 5 months.

Answer:

-2.1f-17

Step-by-step explanation:

combine like terms

Answer:

-2.1f-17

Step-by-step explanation:

1. Combine like terms

Like terms are those that either have the same variable, degree, or no variable at all.

Here, -2.5f and 0.4f and -14 and -3 are like terms. -2.5f and 0.4f are like terms because they both have f beside them. The reason -14 and -3 are like terms is because they both stand alone with no variables.

Combining like terms means to either add or subtract them from each other depending on their signs.

Just think of them as two separate problems for now.

-2.5f + 0.4f = ?

add these two together to get -2.1f

-14-3

Subtract these to get -17.

2. Put the expression back together: -2.1f-17

Answer:

Puppy's current weight = 33 pounds.

Step-by-step explanation:

The weight of Ray's puppy 1 year ago = 8 pounds

All we need is to add the 8 pounds to 25 to determine the current weight.

i.e.

current weight = 8 + 25

                         = 33 pounds

Therefore, puppy's current weight = 33 pounds.

Answer:

y=10x-4

Step-by-step explanation:

To find the slope of the line, we will take 2 points.

(1,6), (2,16)

m=16-6/2-1

m=10/1 or m=10

Next, we will need to find b.

6=10(1) + b

6=10 +b

-4=b

y=10x-4

Answer:

x= 6.6     Length of DE= 16.2

Step-by-step explanation:

I got it right on edge

Answer:

total hr worked = 39 + 37 = 76 hr

salary per hr = 110 $

so total salary = 110 * 76 = 8360$

Answer:

a

Step-by-step explanation:

1.25 times 4 =5, 1 times 5 =5

Answer:

It's 39/89

Step-by-step explanation:

cos X = adjacent/ hypotenuse = 39/89

[tex]\frac{39}{89}[/tex] represents cosine of ∠X.

What is cosine?

'In a right-triangle, cos is defined as the ratio of the length of the adjacent side to that of the longest side which is the hypotenuse.'

According to the given problem,

In the right angle triangle ΔWXY,

Hypotenuse = XW = 89

Perpendicular = WY = 80

Base = YX = 39

We know,

cos∅ = [tex]\frac{Base}{Hypotenuse}[/tex]

⇒ cosX = [tex]\frac{39}{89}[/tex]

Hence, we can conclude that the ratio [tex]\frac{39}{89}[/tex] represents the cosine of ∠X

Learn more about trigonometric identities here: https://brainly.com/question/17976817

#SPJ2

Answer:

Im pretty sure D

Step-by-step explanation:

Answer:

Step-by-step explanation:

Other ways are:

So in total there are:

Answer:

G

Step-by-step explanation:

10x20=200

8x25=200

Answer:

G: 8 in. wide and 25 in. long

Step-by-step explanation:

10 x 20 = 200

5 x 25 = 125 (nope)

8 x 25 = 200

Answer:

x=7,3

Step-by-step explanation:

x^2-8x+14=2x-7

Add 8x to both sides.

x^2+14=10x-7

Add 7 to both sides.

x^2+21=10x

x^2+7*3=10x

(x*7)+(x*3)=10x

x=7,3

Hope this helps plz hit the crown :D

Answer:

a. $12,600

b. $21

c. $19

Step-by-step explanation:

a) The cost is $3000 plus $16 per book

For 600 books, we have

3000 + 16(600)

= 3000 + 9600 = $12,600

b) Cost per book will be;

12,690/600 = $21

c) for 1000

= 3000 + 16(1000)

= 3000 + 16,000 = 19,000

cost per book is 19,000/1000 = $19

Answer:  [tex]385cm^{2}[/tex]

Step-by-step explanation:

given data:

AB= 10 cm.

BC = 22 cm.

volume of a cylinder V = [tex]\pi r^{2} h[/tex]

h = 10.

solution

base of the circumference = 22cm

circumference of a circle = [tex]2\pi r[/tex]

r = radius is unknown.

[tex]2\pi r = 22[/tex] .........................eq1

where [tex]\pi = \frac{22}{7}[/tex] insert this into eq1.

[tex]2* \frac{22}{7}* r = 22[/tex]

[tex]\frac{44}{7} r = 22[/tex]

[tex]r = \frac{22}{\frac{44}{7} }[/tex]

[tex]r= 3.5cm[/tex]

next we solve for the volume of the cylinder.

recall   [tex]V = \pi r^{2} h[/tex]

h = 10cm

r = 3.5cm

[tex]V = \frac{22}{7} * (3.5)^{2} *10[/tex]

[tex]V = 385cm^{2}[/tex]

Answer:

25

Step-by-step explanation:

15 divided by 6 is 2.5, and so is 32.5/13, so 2.5 is your scale factor. Multiply 10 by 2.5 for 25, which is the length of side XY.

Answer:

Step-by-step explanation:

the answer is that d and c is 13 m and y and z is 32.5 m

Answer:

1. 34

2. 2

3. 8.5

4. 52

5. 6.6

6. 71

7. 2

8. 100

9. .5

Step-by-step explanation:

Answer:

Option C

Step-by-step explanation:

Since, measure of all sides of the triangle has been given in the picture,

By applying cosine rule in the given triangle,

AC² = AB² + BC² - 2(AB)(BC)cos(B)

11² = 16² + 16² - 2(16)(16)cos(B)

121 = 256 + 256 - 512.cos(B)

121 - 512 = - 512.cos(B)

cos(B) = [tex]\frac{391}{512}[/tex] = 0.763672

B = [tex]cos^{-1}(0.763672)[/tex]

B = 40.2°

Therefore, measure of angle B is 40.2°.

Option C is the answer.

Step-by-step explanation:

Notice that B = {1, 3, 5, 7} and C = {0, 2, 4, 6, 8, 10}.

A U B = {1, 3, 5, 7}.

B ∩ C = { }.

A U C = {0, 1, 2, 4, 5, 6, 7, 8, 10}.

Answer:

The composite area is a total of 62 square inches.

Step-by-step explanation:

You're given three rectangles of different width and height.  To find the correct answer, you need to find the sum of each rectangles' area.

first though we need to find the height of the middle rectangle.  We are told the total height and the other two rectangles' heights, so we just need to subtract the others' heights from the total:

10 - (4 + 1.5)

10 - 5.5

= 4.5

So the middle rectangle is 4x4.5 inches, giving it an area of 18 square inches

The top one is 8x4 inches for a total of 32 square inches.

And the bottom one is 1.5x8 inches, for a total  12 square inches.

If we add them all up, that's 18 + 32 + 12 square inches, or 62 square inches.

Answer:

7 units

Step-by-step explanation:

Given that :

house is at (−4, 10). Her school is at (−4, 3)

House location = (-4, 10)

School location = (-4, 3)

Distance from house to school (d) :

Distance between two points :

x = sqrt[(x2 - x1)^2 + (y2 - y1)^2]

x1 = - 4 ; y1 = 10 ; x2 = - 4 ; y2 = 3

d = sqrt[(-4 - (-4))^2 + (3 - 10)^2]

d = sqrt[(-4 + 4)^2 + (-7)^2]

d = sqrt(0 + (-7)^2)

d = sqrt(49)

d = 7 units

Answer: B 35/4

Step-by-step explanation: