Noah says that to find 20% of a number he divides the number by 5. For example, 20% of 60 is 12, because 60÷5=12. Does Noah’s method always work? Explain why or why not.

Answer:

Step-by-step explanation:

Given the number of miles Elise walks in n hiurs modeled by the equation;

d = ns

The number of miles he walks per hour is expressed by substituting n =1 into the equation to have;

d = ns

d = (1)s

d = s

Hence the number of miles he walked per hour is expressed as d = s

Answer: abd=50

Step-by-step explanation: bc angel 3 is 80 that means angel 2 is one hundred and abc is the same as angel tow because the two lines are so ABC is 100 and line segment BC is bisecting ABC so you divide ABC by two and get 50  

Answer:

24,418,421,851

Step-by-step explanation:

Answer:

24418421730+ 11x

Step-by-step explanation:

Answer:

41

Step-by-step explanation:

x=12

so y=3⋅12 +5

=36+5

=41

Answer:

Step-by-step explanation:

8/30   16/50

find a least common factor, whih in this case is 150

40/150 to 48/150.

so the sign you would use is <

Answer:

line 1 and 2 I think sorry if I'm wrong

Answer:

Infinite solution

Step-by-step explanation:

- 2x + 5 = -2x + 5

→ Plug any value in and the output with equal it

Answer:

Infinite solution

Step-by-step explanation:

one solution - x=a

no solution- a=b

infine solution- a=a

Answer

Step-by-step explanation:

1.F

2.T

3.T

4.F

they are correct

took it on ede

Step by step explanation

let x be the number of minutes and y be the total charges per month

A. Melissa's cell phone plan charges two cents a minute plus a $10 monthly fee.

y=0.02x+10

B. Sandra's cell phone plan charges seven cents a minute.

y=0.07x

C. Holly's cell phone plan charges five cents per minute. She also receives a $5 discount each month.

y=0.05x-5

D. Alicia's cell phone plan charges six cents per minute plus a $5 monthly fee.

y=0.06x+5

Answer:

The question is y/4= -7

So we will have to criss-cross it, so that x could be alone

When we criss-cross it we multiply

So,

y=4×-7

y=-28

Step-by-step explanation:

I explained my best, please give me brainliest

Answer:

x=125, y=125

Step-by-step explanation:

180-55=125

x and y are alternate angles

Answer:

x=125

y= 125

Step-by-step explanation:

x + 55 = 180

y = x

alternate interior angles are equal

Answer:

1) The correct option is;

b. Reflection over the y-axis

2) The correct option is;

a. Dilation by a scale factor of 1/2

Step-by-step explanation:

1) The rule for reflection over the y-axis is given as follows;

Given the point of the preimage before the reflection = (x, y), the point of the image after the reflection will be (-x, y)

The coordinate of a point on T1 is (-2, 4). The coordinate of similar point in T2 is (2, 4) which satisfies the rule for reflection over the y-axis

2) The length of a side in triangle T2 is given by the formula for finding the length, l, of segments between coordinate points as follows;

[tex]l = \sqrt{\left (y_{2}-y_{1} \right )^{2}+\left (x_{2}-x_{1} \right )^{2}}[/tex]

Point 1, (x₁, y₁) = (2, 4)

Point 2, (x₂, y₂) = (6, 2)

The length = √((2 - 4)² + (6 - 2)²) = 2·√5

The length of the corresponding side in T3 is given as follows;

Point 1, (x₁, y₁) = (1, 2)

Point 2, (x₂, y₂) = (3, 1)

The length = √((1 - 2)² + (3 - 1)²) = √5

The length of of a side T3 = 1/2 of the length of a side of T2

Therefore. triangle T2 is transformed into triangle T3 by dilation with a scale factor of 1/2.

Answer:

13/36

Step-by-step explanation:

Answer:

13/36

Step-by-step explanation:

1/4(1/3)^2+1/3

1/4(1/9)+1/3

1/36+1/3

1/36+12/36

13/36

Answer: B

The graph of the proportional relationship equation is a straight line through the origin.

I hope this is good enough:

Answer:

x=0

Step-by-step explanation:

Divide both sides by the numeric factor on the left side, then solve.

3(2x−5)=−15

Step 1: Simplify both sides of the equation.

3(2x−5)=−15

(3)(2x)+(3)(−5)=−15(Distribute)

6x+−15=−15

6x−15=−15

Step 2: Add 15 to both sides.

6x−15+15=−15+15

6x=0

Step 3: Divide both sides by 6.

6x/6 = 0/6

x=0

Hope this helps :)

Answer:

2x-5= -3x times(x) 3 is -9

Step-by-step explanation:

PEMDAS

Answer:

Step-by-step explanation:

Convert the decimal number to a fraction by placing the decimal number over a power of ten. Since there is

1

number to the right of the decimal point, place the decimal number over

10

1

(

10

)

. Next, add the whole number to the left of the decimal.

Answer:

A=2(wl+hl+hw)

Step-by-step explanation:

Answer:

A=2(wl+hl+hw) hope this is helps you

Answer:

I am pretty sure it's C but, make sure before choosing anything else, to look over.

Step-by-step explanation:

Answer:

0.304 pints per day

Step-by-step explanation:

Here, we want convert

if 6 milliliters flow in an hour , then in a day which is 24 hours, the amount that will flow is 24 * 6 = 144 milliliters in a day

so we need to convert this to pint

mathematically;

1 pints= 473.176 ml

x pints = 144 ml

x =

144/473.16 = 0.304 pints per day

Step-by-step explanation:

let eqn be y = mx + b.

m = (-2 - 8)/(1 - 3) = 5

sub (3, 8):

8 = 5(3) + b

b = -7

therefore equation of the line is y = 5x - 7

Topic: coordinate geometry

If you like to venture further, feel free to check out my insta (learntionary). I'll be constantly posting math tips and notes! Thanks!

Answer:y = 5x - 7

Step-by-step explanation: /

Answer: 203.8 percent

Step-by-step explanation:

Answer:

y  = 6x + 4

Step-by-step explanation:

Given parameters:

     Slope  = 6

     y-intercept  = 4

Unknown:

Equation of a given line  =?

Solution:

The equation of line is given as;

        y  = mx + c

y and x are the coordinates

m is the slope  

c is the intercept;

  So;

         y  = 6x + 4

Answer:

A: she will earn 450$ interest

B:the balance will be 7950$

hope that helps

Step-by-step explanation:

Answer:

$3003

Step-by-step explanation:

30/100×$3,575=3000/$3,575=0.84%

0.84%/100×$3,575

84/100×3,575=$300,300/100

$3003

Answer:

42 ft in 6 seconds

Step-by-step explanation:

The person whom walks a greater distance in lees time is faster

Answer:

2

Step-by-step explanation:

15+15 is 25 and for every 15 questions he gets 1 wrong so he got 2 wrong

John will fail.

John will fail.

John will fail.

John will fail.

John will fail.

John will fail.

John will fail.

John will fail.

John will fail.

Answer:

Area is 69 in^2

Step-by-step explanation:

the big square is 9*9=81

the small rectangle is 4*3=12

81- 12= 69 in^2