Help with proofs (10 points) please help will give brainliest

Answer:

Step-by-step explanation:

if you know 50*4=200, you must also know that 50*10=500 and that 4*100=400 so 500*400= 50*10*4*100

multiplication is comutative so

50*4*10*100=200*1,000= 200, 000

Answer:

500×400=

5×4=20

=20+(4 of zero)0000

200000

=200,000

Answer:

35

Step-by-step explanation:

Let the number  = y ;

  5 more than the number  = y + 5

  20 less than that number  = y  - 20

Ratio  = 8:3;

Solution:

 Ratio of the number:

                   [tex]\frac{y + 5}{ y -20}[/tex]   = [tex]\frac{8}{3}[/tex]

Now cross multiply and solve for y;

          3(y+5)  = 8(y-20)

            3y + 15  = 8y - 160

            3y - 8y  = -160 - 15

                -5y  = -175

                    y  = 35

Answer:

Both ate 52 degrees

Step-by-step explanation:

You can find the measure of angle 5 by subtracting 128 from 180, which equals 52. From there you can deduct that angles 3 and 1 are congruent to 5, making them both 52 degrees.

Answer:

10

100

1000

Step-by-step explanation:

I had a quiz on that the other day got 100%

Step-by-step explanation:

since it's 20% off, that means it's sold at 80%.

hence,

80% x $41.45 = $33.16

Topic: percentage

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Answer:

Step-by-step explanation:

1). 17 and 2

17 × 2 = 34 and 17 + 2 = 19

2). 7 and 4

3). 24 and 1

4). ( - 11) and ( - 3)

5). ( - 15) and ( - 2)

6). 22 and 3

Answer:

Step-by-step explanation:

start at (0, 72), then (1, 64), (2, 56), ETC. I hope you see the pattern! Do it until you reach (9, 0)

Answer:

person jumping on trampoline

Step-by-step explanation:

A person jumping on a trampoline

a diagram showing the relation between variable quantities, typically of two variables, each measured along with one of a pair of axes at right angles.

According to the graph,

It is measured between height and time,

Which can be related to

A person jumping on a trampoline

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Answer: $12.55

Step-by-step explanation:

Answer:

(4n + 5)(4n+5)

16n^2+20n+20n+25

16n^2+40n+25

Answer is option D.

Mark brainliest!!

Answer:

D

Step-by-step explanation:

By definition of tangent,

tan(x) = sin(x) / cos(x)

so if tan(x) < 0, and we're given cos(x) = -1/4 < 0, then it follows that sin(x) > 0.

Recall the Pythagorean identity:

cos²(x) + sin²(x) = 1   →   sin(x) = + √(1 - cos²(x))

Then

sin(x) = √(1 - (-1/4)²) = √(15/16) = √(15)/4

Recall the double angle identity:

sin(2x) = 2 sin(x) cos(x)

Then

sin(2x) = 2 • √(15)/4 • (-1/4) = -2√(15)/16 = -√(15)/8

Answer:

n knf

Step-by-step explanation:

sdfdfdf

Answer:

e

Step-by-step explanation:

Answer:

Perimeter of his fence = 120 m

Step-by-step explanation:

Given:

Area of square land = 3,600 m²

Find:

Perimeter of his fence

Computation:

Area of square land = 3,600 m²

4a² = 3,600 m²

a² = 900 m²

a = 30 m

Perimeter of his fence = 4a

Perimeter of his fence = 4 x 30

Perimeter of his fence = 120 m

Answer:

A decagon has 10 sides so its interior angles add up to 180(10) - 360 = 1440 degrees. Therefore, on average, each interior angle is 144 degrees and each exterior angle is 36 degrees. The sum of the exterior angles is 10 x 36 = 360 degrees.

Step-by-step explanation:

The total sum of the interior angles of a simple decagon is 1440°

Answer:

slope: -3.5 y-intercept: 4

Step-by-step explanation:

The ratio of cups of flour to tablespoons of peanut butter if Felipe makes 3 batches of dog treats is, 1/4

A ratio in mathematics is a comparison of two or more numbers that shows how big one is in comparison to the other. The dividend or number being divided is referred to as the antecedent, while the divisor or number that is dividing is referred to as the consequent.

Given that,

Felipe makes 3 batches of dog treats

The recipe for peanut butter dog treats,

(Ingredient)                 (amount)

Peanut butter              4 tbsp

Flour                             1 cup

Egg                               1

Water                           2 tbsp

For 3 batches

Peanut butter required = 3 × required for one batch

                                       = 3 × 4

                                       =  12 tbsp

Flour Required               =  3 × required for one batch

                                       =  3 × 1

                                       =  3

the ratio of cups of flour to tablespoons of peanut butter =  3/12

                                                                                                =  1/4

Hence, the ratio is 1/4

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Answer:

15.8 miles

Step-by-step explanation:

Given that:

Distance driven south = 15 miles

Distance driven east = 5 miles

How far is Mr. Martinez from his starting point?

Using Pythagoras :

Distance from starting point(d) :

d = √(15)² + (5)²

d = √225 + 25

d = √250

d = 15.811388

d = 15.8 miles

Answer:

0

Step-by-step explanation:

god made it that way

Answer: The side length is eight inches.

Step-by-step explanation: 56/7 because of 1/7 scale. Which = 8

Answer:

A"(-1, -3), B"(-2, -6), C"(1,-7)

Step-by-step explanation:

y= -4 is a horizontal line that cuts y-axis at (0, -4)

A'(-4, -5), B'(-5,-2), C'(-2,-1) are given on thhe graph

first we reflect over the line m, y= -4

A"(-4, -3), B"(-5, -6), C"(-2,-7) because the line m is the bisector of what conects the image and preimage points

second we translate T(3,0) so you add a 3 to the x coordinate of each point

A"(-4+3, -3), B"(-5+3, -6), C"(-2+3,-7)

A"(-1, -3), B"(-2, -6), C"(1,-7)

Answer:

x =32

Step-by-step explanation:

create equation

180 = 3x + 20 + 2x

combine like terms

180= 3x + 20 + 2x

180=5x + 20

subtract 20 from both sides of the equation

180=5x + 20

180-20= 5x +20 -20

simplify

160= 5x

divided both sides by 5

160/5=5x/5

solution

32= x

Answer:

12

Step-by-step explanation:

[tex]\frac{60}{20}[/tex] = 3, so if it varies directly with x then its 4 x 3 which is 12

Answer:

12

Step-by-step explanation:

I took the test thats the correct answer

Answer: Timothy

Step-by-step explanation:

8/9=0.8888888889

2/3=0.6666666667

4/5=0.8

Answer:

represent a Pythagorean triple consists of three positive integers a, b, and c, such that a^2 plus b^2 = c^2

Answer:

D

Step-by-step explanation:

3.19 become 3.20 . 1.69 becomes 1.70. Then 3.20 plus 1.70 is 4.90 or 4.9.

Answer:

D. 4.9

3.19 -> 3.2

1.69 -> 1.7

3.2 + 1.7 = 4.9