20 POINT!!
Can someone please help me I don’t understand it

9514 1404 393

Answer:

  L'(4, -3)

Step-by-step explanation:

The reflection over the horizontal line y=-1 effects the transformation ...

  (x, y) ⇒ (x, -2-y)

So, the coordinates of L are transformed to ..

  L(4, 1) ⇒ L'(4, -2-1) = L'(4, -3)

Answer:

48 km.

Step-by-step explanation:

Multiply 6 and 8, you get 48.

Answer:

The corn plant grew by 11.17 inches during week 2.

Step-by-step explanation:

7 and 1/3 inches tall at the end of Week 1.

The height at the end of week 1, as a simple fraction, is:

[tex]7 + \frac{1}{3} = \frac{3*7 + 1}{3} = \frac{22}{3}[/tex]

The corn plant was 18 1/2 inches tall at the end of Week 2.

At the end of week 2, the height will be of:

[tex]18 + \frac{1}{2} = \frac{18*2+1}{2} = \frac{37}{2}[/tex]

How many inches did the corn plant grow during Week 2?

Height at the end of week 2 subtracted by the height at the end of week 1. So

[tex]\frac{37}{2} - \frac{22}{3} = \frac{3*37-2*22}{6} = \frac{67}{6} = 11.17[/tex]

The corn plant grew by 11.17 inches during week 2.

9514 1404 393

Answer:

  +70 or -70, depending on how you rewrite the equation

Step-by-step explanation:

A quadratic equation in standard form can be written as ...

  ax² +bx +c = 0

When this equation is written in standard form, it could be either of ...

  17x² +30x +40 = 0 . . . . . . . . . . add 17x²+30x to both sides

or

  -17x^2 -30x -40 = 0 . . . . . . . . . subtract 40 from both sides

__

In the first case, a = 17, b = 30, c = 40 and (b+c) = 70.

In the second case, a = -17, b = -17, c = -40 and (b+c) = -70.

_____

Additional comment

I personally prefer a positive leading coefficient, but it is less work to subtract 40 from both sides than to subtract 2 terms from both sides. Check your curriculum materials for the preferred rewrite in this case.

Answer:

110 degrees

Step-by-step explanation:

the answer is 110 degrees

add up everything and subtract it by 360 to get 110.

plz dont report. Can I have brainliest. I need it.

Answer:

we will add all the sides

40+128+×+82=360

250+×=360

×=360-250

x=110

Answer:

We observe that this is a GP  with:

The nth term is:

Answer:

48 minutes

Step-by-step explanation:

Multiply

Answer:

option A

A(-2,-3)

Step-by-step explanation:

make y subject of formula

x+2y=-8

2y=-8-x

y=(-8-x)/2

y=-4-x/2

when x=-2

y=-4-(-2)/2

=-4-(-1)

=-4+1

=-3

(-2,-3) is an ordered pair

Step-by-step explanation:

the product is

2³ x n²

sorry but I don't get your question

Step-by-step explanation:

it is equal to 8n2 that is the answer

Answer:

The inverse function is [tex]f^{-1}(x) = \frac{x - 5}{9}[/tex]

Step-by-step explanation:

Inverse function:

Suppose we have a one-to-one function y = f(x). To find it's inverse, we exchange y and x, and then isolate y.

In this question:

[tex]y = 9x + 5[/tex]

Exchanging x and y:

[tex]x = 9y + 5[/tex]

Isolating y:

[tex]9y = x - 5[/tex]

[tex]y = \frac{x - 5}{9}[/tex]

[tex]f^{-1}(x) = \frac{x - 5}{9}[/tex]

The inverse function is [tex]f^{-1}(x) = \frac{x - 5}{9}[/tex]

9514 1404 393

Answer:

  96 yards

Step-by-step explanation:

The diagonal through the park cuts the rectangle into two right triangles. The Pythagorean theorem tells you the relationship between the sides of a right triangle and its hypotenuse: the sum of the squares of the sides is equal to the square of the hypotenuse.

The diagonal is the hypotenuse, so we have ...

  100² = 28² + w²

  w = √(10000 -784) = 96

The width of the park is 96 yards.

_____

Additional comment

The integer side lengths of a right triangle form what is called a "Pythagorean triple." One of the most often seen of these is (3, 4, 5). Other commonly seen Pythagorean triples are (5, 12, 13), (7, 24, 25), (8, 15, 17).

You may notice that the numbers here are those of the (7, 24, 25) Pythagorean triple, multiplied by 4. If you recognize the given lengths as having the ratio 28:100 = 7:25, you have the clue you need to determine the answer simply from your knowledge of Pythagorean triples.

9514 1404 393

Answer:

  A

Step-by-step explanation:

The axis of symmetry of quadratic ax²+bx+c is x=-b/(2a). For the given equation, the axis of symmetry is ...

  x = -4/(2(3/2)) = -4/3

The only graph with its vertex at x=-4/3 is graph A.

_____

Additional comment

You can also make the correct choice by evaluating the equation at a couple of different values of x. Convenient ones are x= -1, or 0, or +1. The value at x=0 is the y-intercept, (0, -2), which seems to be a point on all of the graphs. The value at x=1 is 3/2+4-2 = 3.5, which looks like it is only seen on graph A.

Answer:

10 students were taking science and art at the same time.

Step-by-step explanation:

Given that a group of 80 students were asked if they were taking science or art, of which 10 were taking neither, 50 were taking science, and 30 were taking art, to determine how many students take both science and art, the following calculation must be done:

80 - 10 = 70

50 - 30 - 70 = X

80 - 70 = X

10 = X

Therefore, 10 students were taking science and art at the same time.

Answer:

The volume of the cylinder is 6,104.16 square meters.

Step-by-step explanation:

Given that a cylinder has a height of 6 meters and a diameter that is 6 times the measure of the height, to determine, using 3.14 for pi, which of the following can be used to calculate the volume of the cylinder, the following calculation must be done, knowing that the volume of a cylinder is determined by multiplying Pi by the height by the radius squared, and that the diameter of a circle is twice its radius:

3.14 x 6 x (6x3) ^ 2 = X

18.84 x 18 ^ 2 = X

18.84 x 324 = X

6,104.16 = X

Therefore, the volume of the cylinder is 6,104.16 square meters.

Answer:

(3.14)(18m)2(6m)

Step-by-step explanation:

I took the test

Answer:

$171.72

Step-by-step explanation:

$9.54 x 18

Answer:

x=6root15

Step-by-step explanation:

24^2-6^2=x^2

x^2=540

x=6root15

Answer:

x=23.2379

Step-by-step explanation:

Answer:

1 3/35

Step-by-step explanation:

4/5 +2/7

To solve this you need to find the common denominator.

Basically, you want to find a number that both 5 and 7 multiply into.

In this case, it is 35.

So we wanna make both fraction's denominators (the bottom numbers) into 35.

The only way we can do this is by multiplying the left fraction 4/5 by 7/7 and the right fraction 2/7 by 5/5.

In the end you get 28/35 +10/35. Now you can add them and you get 38/35 which simplifies to 1 3/35.

Answer:

?</><<

Step-by-step explanation:

Answer:

if each tube of paints costs a dollar he will get 25 because of the 15 dollars added to the 10 dollars

Step-by-step explanation:

hope this helps

Answer:

[tex](a)\ Mean = 80kg[/tex]

[tex](b)\ Median = 76kg[/tex]

[tex](c)\ Mode = 61kg[/tex]

Step-by-step explanation:

Given

[tex]Data:105kg, 53kg ,76kg ,91kg ,120kg ,61kg ,55kg ,98kg ,61kg[/tex]

[tex]n = 9[/tex]

Solving (a): The mean

This is calculated using:

[tex]\bar x = \frac{\sum x}{n}[/tex]

[tex]\bar x = \frac{105kg+53kg +76kg +91kg +120kg +61kg +55kg +98kg +61kg}{9}[/tex]

[tex]\bar x = \frac{720kg}{9}[/tex]

[tex]\bar x = 80kg[/tex]

Hence:

[tex]Mean = 80kg[/tex]

Solving (b): The median

[tex]Data:105kg, 53kg ,76kg ,91kg ,120kg ,61kg ,55kg ,98kg ,61kg[/tex]

Arrange in ascending order

[tex]Data: 53kg ,55kg, 61kg ,61kg,76kg ,91kg ,98kg , 105kg,120kg[/tex]

[tex]n = 9[/tex]

So, the position of the median element is:

[tex]Median = \frac{n+1}{2}th[/tex]

[tex]Median = \frac{9+1}{2}th[/tex]

[tex]Median = \frac{10}{2}th[/tex]

[tex]Median = 5th[/tex]

The 5th element is 76kg

Hence:

[tex]Median = 76kg[/tex]

Solving (c): The mode

In the given data

[tex]Mode = 61kg[/tex]

Because it has a frequency of 2 (the highest), others have 1

Answer:

84,000 cm³

Step-by-step explanation:

This is a prism with a trapezoidal base.

V = BH

where V = volume of prism, B = area of the base, H = height of the prism

For the trapezoid, the area is

A = ½(b1 + b2)h,

where A = area, b1 and b2 are the bases, and h is the height of the trapezoid.

V = ½(b1 + b2)hH

V = ½(60 cm + 45 cm) (20 cm)(80 cm)

V = 84,000 cm³

ytog8higfjfhlfiydd6ofudydyfof6f

Answer:

4x + y = 500

Step-by-step explanation:

Given:

Volume of water = 500 gallons

Water drained rate = 4 gallon per hour

Find:

Equation

Computation:

Total volume of water left in tank = y

Number of hour water drained = x

So,

Volume of water - Total volume of water left in tank = Water drained rate[Number of hour water drained]

500 - y = 4x

So,

Water drained;

4x + y = 500

Answer:

Step-by-step explanation:

y = The number of gallons in the tank after being drained for x hours

x = The number of hours that the tank is being drained

500 = The number of gallons in the tank

4 gallons = the number of gallons that are being drained per hour

y = 4x - 500

Correct answer: 0 = 4 (125) - 500

500 / 4 = 125

Answer:

2 3/4

Step-by-step explanation:

Answer:

hhhhhhhhhhhhhhhhhhhiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

Step-by-step explanation:

Answer:

y=5

Step-by-step explanation:

First simplify:

y/15=1/3

Multiply each side by 3

y/15x3=1/3x3

y/5=1

Multiply each side by 5

y=5

Answer:

12, 14, and 16

Step-by-step explanation:

Assume

1st number: x

2nd number: x+2

3rd number: x+4

(I'm adding 2 for each number because even numbers skip by 2)

The numbers add to 42, so

x+(x+2)+(x+4)=42

x+x+2+x+4=42

3x+6=42

3x=36

x=12

1st number: 12

2nd number: 12+2=14

3rd number: 12+4=16

12, 14, and 16

Answer:

73

Explanation

To find the average we need to find the mean. So you have

87,93,96, and 89. Add it up and you get 365. Next you have to divide it by how many numbers there are, so 365 divided by 5 and you get 73.

(I divided 365 by 5 because we are looking for the score she needs on the 5th quiz too.)