why is it important to have a random sample for your data in statistics?

Answer:

She should get a speeding ticket. The speed limit is 60mph and her speed was 78 mph, 18 miles over the speed limit.

Step-by-step explanation:

She drove 117 miles in 90 minutes.

117/90 = 1.3 miles per minute

1.3 miles x 60 minutes = 78 mph

Answer:

Excact Form

Decimal Form

Mixed Number

Step-by-step explanation:

To add fractions, find the least common denominator and then combine

2 = 5 + 8

hopes this helps

Answer:

14

Step-by-step explanation:

14 x 3 = 42

42 + 6 = 48

48 ÷ 8 = 6

Therefore, the answer is 14.

Answer:

14

Step-by-step explanation:

let us call the number x for now

the number (x) is multiplied by 3 to give us

3x

then,

it is added to 6 to give

3x + 6

then, our sum is divided by 8:

(3x + 6) / 8

according to the question, the result is 6

therefore,

3x + 6 / 8 = 6

if we cross multiply,

3x + 6 = 8 ( 6 )

3x + 6 = 48

collecting like terms,

3x = 48 - 6

3x = 42

divide through by 3 to give

3x / 3 = 42 / 3

x = 14

therefore, x = 14

to reassure us of our answer,

since (3(x) + 6) / 8 = 6

and we know that x = 14,

therefore,

(3(14) + 6) / 8 = 6

(42 + 6) / 8 = 6

48 / 8 = 6

6 = 6

therefore, we are now sure that x = 14

hope this helps

thanks

Answer:

The price was reduced by 25%

Step-by-step explanation:

Not sure how to go step by step on this, because it's kinda obvious once you think about it a bit. You need to find what percent of 40 that 10 equals (if that  makes sense). So really it's just what percent of 40 equals 10? and since 10 is one fourth of forty, 1/4, then you convert that to percent: 25% (sorry if this made no sense, i'm not very good at explaining things)

Answer:

[tex]f = 9 \div 5c + 32[/tex]

[tex]f - 32 = 9 \div 5c[/tex]

[tex]5(f - 32) = 9c[/tex]

[tex]5(f - 32) \div 9= 9c \div 9[/tex]

Step-by-step explanation:

C = 5(F–32)/9

everything can be found in the solving hope this helps. if you have any worries or doubts don't hesitate to ask me back

Answer:C

Step-by-step explanation:

F=9/5 x C +32

F = -32 =9/5 x C

5/9 (F-32)+C

Answer:

9x + y = 12

Step-by-step explanation:

Hi there!

We are given the equation y - 3 = -9(x-1) and we want to write it in standard form

The equation is currently in point-slope form, which is [tex]y-y_1=m(x-x_1)[/tex], where [tex](x_1 , y_1)[/tex] is a point and m is the slope. Standard form is ax + by = c, where a, b, and c are free integer coefficients

We can first convert the equation from point-slope form into slope-intercept form, which is y=mx+b, where m is the slope and b is the y intercept

We can distribute 9 to every term on the right side:

y - 3 = -9x + 9

Now add 3 to both sides

y = -9x + 12

Now the equation is in slope-intercept form (y=mx+b). To make it standard form, add 9x to both sides, to make the form ax + by = c .

9x + y = 12

Hope this helps!

Answer:

15.75 inches

Step-by-step explanation:

You can use a ratio to find your answer by cross multiplying.

300 ft        315 ft

----------  =  ----------

 15 in           x  in

Cross multiplying would give you:

300x = 15 x 315

300x = 4725

x = 4725 / 300

x = 15.75 inches

Answer:

a = 3x + 6y

Step-by-step explanation:

You start by flipping the equation.

After that there is not enough information to solve for a.

Answer:

the values are x= 0.94 and x= -3.19

Answer:

The rational numbers include all the integers, plus all fractions, or terminating decimals and repeating decimals. Every rational number can be written as a fraction a/b, where a and b are integers. If a number is a whole number, for instance, it must also be an integer and a rational.

Step-by-step explanation:

Answer:

100

Step-by-step explanation:

hope it's help you

pls brainliest me:(

Answer:

8 cm

Step-by-step explanation:

Hello there! :)

We are given that these figures are similar.

It means that the sides are proportional. So

[tex]\frac{4}{6} =\frac{6}{x}[/tex]

Cross-multiply:

4x=36

Divide both sides by 4 to isolate x:

x=9 cm

Hope this helps!

~Just a gloomy teen who misses her best friend

[tex]GraceRosalia :-([/tex]

estimated sum-114, actual sum-112.97

Step-by-step explanation:

76.6-77

25.5-26

10.87-11

77+26+11=114

76.6+25.5+10.87=112.97

Answer:

Option C.

Step-by-step explanation:

First, simplify the inequality. Add 2 to both sides:

4v - 2 < 10

4v - 2 + 2 < 10 + 2

4x < 12

Divide both sides by 4:

4x ÷ 4 < 12 ÷ 4

x < 3

As 3 will not satisfy the inequality, it is not a solution. The option that shows x being less than 3 but not including is option C.

Hope this helps!

Answer:

7x+7

Step-by-step explanation:

10x + 7 - 3x

Combine like terms

10x-3x   +7

7x+7

Step-by-step explanation:

10x + 7 - 3x

= 10x - 3x + 7

= 7x + 7

[tex] \small{\colorbox{black}{\purple{\boxed{\pink{ \sf\:✨ \small{ḀṆṠẇḕṙ \: ḃẏ}✨{ \small{\gray{\boxed{\orange{\: \tt \: - ꆰꍟꈤ꒒ - \:}}}}}}}} }}[/tex]

Answer:

16 minutes

Step-by-step explanation:

80% of 20 =

10% ×8= 2×8=16

16 mins

Answer:

C.

Step-by-step explanation:

The formula to convert C° to F° is C = 5(F-32)

Answer: -7, 12

Step-by-step explanation:

a+b = 5

a*b = -84

a = 5-b

(5-b)*b = -84

-b^2 + 5b + 84 = 0

(-b - 7)(b + 12) = 0

The roots are -7 and 12.

I'm not sure what â€" stands for

Answer:

3

Step-by-step explanation:

Let the number be x

5*x=5x

5x-8= 4 + x

4x =12

x= 3

Answer:

2 step equation problems.

Step-by-step explanation:

So you need to replace -3 into that to add -18 on both sides and that gives you the negative number is -20 and then you add the -5r+-3r less than or equal to -20. Now, negative -5 +3 = -8 + -20 = -28. r=-28.

Answer:

they have two corresponding angles that are congruent or equal in measure.

Step-by-step explanation:

BIG BRAIN

Answer:

24% voted for candidate C.

Step-by-step explanation:

36/150 = 0.24 = 24%

Answer:

-10

Step-by-step explanation:

2x+6 = x-4

2x = x - 4 - 6

2x = x -10

2x -x = x-x - 10

x = -10

Please mark my answer as brainest

Answer:

angle 4 = 56°

Step-by-step explanation:

Interior angles in the same side of the transversal are supplementary (their sum is 180°)

Angle 1 and 4 are interior angles on the same side of the transversal.

So, angle 1 + angle 4 = 180°

Angle 1 = 124° (given)

124 + angle 4 = 180°

angle 4 = 180° - 124° = 56°

Therefore, angle 4 = 56°

Hope it helps :)

Answer:

according to how i see all numbers are rational

Answer:

Rational:

0.63

-15.5

-11/4

2 1/2

NOT Rational:

-25.348197

0.314587

Step-by-step explanation:

hope this helps ya (⁠ ⁠╹⁠▽⁠╹⁠ ⁠)

Answer:

correct

Step-by-step explanation: