please help on this i cant understand it

Answer:

15

Step-by-step explanation:

65 min by riding her bike

x min by boarding a bus

since the time taken to get to the dentist with a bus is 5min shorter than twice the time taken with a bike, it can be written as

(2x) - 5 = 65

2x = 65 + 5

2x = 70

x = 35 min. (A)

Answer:

Its 1/81

Step-by-step explanation:

I am not sure why it is not in your choices but I think that's the answer!

Answer:

she will have 3,600 dollars when she is 18

Step-by-step explanation:

Answer:

8 inch is your best buy

Step-by-step explanation:

8inch diameter =10 dollars

5 inch radius = 12 dollars

so if we get each equal to the diameter it should be 10 inch and that would be 24 dollars vs . 8 in for 10 dollars. So best buy would be 8 inch

9514 1404 393

Explanation:

A linear system of two equations in two variables will be a dependent system. This means both equations reduce to the same equation. The equations will be different only until they are reduced to the same form.

Here is one possible set of equations. The first is in slope-intercept form. The second is in point-slope form.

If we subtract the first equation from the second, we get ...

  (y -7) -(y) = (3(x -2)) -(3x +1)

  -7 = 3x -6 -3x -1 . . . . . eliminates y

  -7 = -7 . . . . . . . . . true for all values of x

There are an infinite number of solutions.

Answer:

For the first question: y = x^2

For the second question: y = x^2 - 2x + 1

For the third question: y = x^2 + 2x + 1

For the fourth question: y = x

For the fifth question: y = -x

Hope this helps:) Have a great day!

Answer:

29 approximately

Step-by-step explanation:

You want to estimate 35% of 84.  35% is roughly equivalent to 1/3, so multiply 84 by 1/3 (or, equivalently, divide 84 by 3), obtaining 28.    Use a calculator to find 0.35(84):  29.4.     This 28 is a fairly good estimate of 35% of 84 which is 29.4.

Answer:

False

Step-by-step explanation:

SO SO SO SO SO SO SO sry if this is wrong!!!! i'm 99.9 persecnt sure its right!!!!  :):)::)

Answer:

Y is not directly proportional to x because the line does not pass through the Origin.

Answer:

V=343in³

Step-by-step explanation:

A=6a2

V=a

3V=6A3/2

36=6·2943/2

36=343in³

Answer:

350 people can fit into 42 rooms

Step-by-step explanation:

So we can write it as a relation fraction equation:

[tex]\frac{50}{6}=\frac{x}{42}[/tex]

Where:

x represents the people can fit in 42 rooms

[tex]x=\frac{50*42}{6}[/tex]

[tex]x=350[/tex]

Therefore, 350 people can fit into 42 rooms.

I hope it helps you!

Answer:

they are related because they are across the x axis

Answer:

x=11

Step-by-step explanation:

6x + 1 + 7x = 144

13x + 1 = 144

13x = 143

x = 11

Answer: [tex]2d^2-2d[/tex]

Step-by-step explanation:

Given

[tex]\Rightarrow (d^2-d+5)-(-d^2+d+5)\\\Rightarrow (d^2+d^2)-d-d+5-5=0-2d+0\\\Rightarrow 2d^2-2d=2d(d-1)[/tex]

Answer:

158in^2

Step-by-step explanation:

Answer:

158 in^2

Step-by-step explanation:

2C = 2x5x8 = 80

2B = 2x3x8 = 48

2C = 2x3x5 = 30

80+48+30 = 158 in^2

Answer:

3. C

4. D

Step-by-step explanation:

1. add flat fee to each song.

2. Multiply 0.15 by 25 then add 10

Answer:

[tex]x=-15.5[/tex]

Step-by-step explanation:

Write down what the problem is saying;

[tex]6(x+9)=2(x-4)[/tex]

Distribute;

[tex]6(x+9)=2(x-4)\\\\(6)(x)+(9)(6)=(2)(x)+(2)(-4)\\[/tex]

Simplify,

[tex]6x + 54 = 2x - 8[/tex]

Inverse operations,

[tex]6x + 54 = 2x - 8\\-2x\\\\4x + 54 = -8\\-54\\\\4x = - 62\\/4\\\\x =-15.5[/tex]

Answer:

__

7.933

Step-by-step explanation:

photo explains it use it

hope this helps ^^

Answer:

y = -2x + 4

Step-by-step explanation:

slope intercept form:

y = mx + b

m = slope = -2

b = y-intercept

x = x = 3

y = y = -2

Plug in the corresponding numbers to the corresponding variables:

-2 = (-2) * (3) + b

Simplify. First, multiply:

-2 = (-6) + b

Next, isolate the b. Note the equal sign, what you do to one side, you do to the other. Add 6 to both sides of the equation:

-2 (+6) = -6 (+6) + b

b = -2 + 6

b = 4

Plug in 4 for b in the equation:

y = mx + b

y = -2x + 4

~

Answer:

Step-by-step explanation:

Given the value 141700000, we are to express in scientific notation

The standard form is expressed as A * 10^n

A is any integer between 1 and 10

n is also any integer

141700000.= 1.47 * 10^8

Note that the decimal point was shifted back 8 times, main reason the power is 8

Answer:

B

Step-by-step explanation:

My teacher just told me

Answer:

A . 496 ft²

Step-by-step explanation:

Area = ½ × base × height

= ½ × 62 × 16

=496 ft²

Answer:

Each friend gets 4 candies and there is 1 left over.

Step-by-step explanation:

4 x 3 = 12.

13 - 12 = 1.

Answer:

y=-3x+5

Step-by-step explanation:

y=-3x-7

slope is -3

parallel lines have the same steepness, they have the same slope.  The slopes are equal.

y-y1=m(x-x1)

y-2=-3(x-1)

y-2=-3x+3

y=-3x+3+2

y=-3x+5

Answer:

62

Step-by-step explanation:

60 + 58 + y = 180

118 + y = 180

y = 180 - 118

y = 62