i got -3 - 2a² is that correct?​

Answer:

3.5

Step-by-step explanation:

Look at the .5's closely if you take the 2.5 measurement info and then there is a little bit left that may be another .5 measurement.

The next step is to to construct a line through point R  is the option;

The steps to  construct a perpendicular through the point R are;

The step that should be taken next to construct a line through point R that is perpendicular to [tex]\overleftrightarrow{ST}[/tex] is therefore;

Place the compass on point T. without changing the setting from the previous step, draw a small arc above [tex]\overleftrightarrow{ST}[/tex]

Learn more about how to carry out geometric constructions here:

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Answer:

$57.60

Step-by-step explanation:

48 x 0.20 = 9.60

48 + 9.60

57.60

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Using the z-distribution, as we have the standard deviation for the population, it is found that the smallest sample size required to obtain the desired margin of error is of 77.

The confidence interval is:

[tex]\overline{x} \pm z\frac{\sigma}{\sqrt{n}}[/tex]

In which:

The margin of error is given by:

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In this problem, we have that the parameters are given as follows:

[tex]M = 3, z = 1.645, \sigma = 16[/tex].

Hence, solving for n, we find the sample size.

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

[tex]3 = 1.645\frac{16}{\sqrt{n}}[/tex]

[tex]3\sqrt{n} = 1.645 \times 16[/tex]

[tex]\sqrt{n} = \frac{1.645 \times 16}{3}[/tex]

[tex](\sqrt{n})^2 = \left(\frac{1.645 \times 16}{3}\right)^2[/tex]

[tex]n = 76.97[/tex]

Rounding up, the smallest sample size required to obtain the desired margin of error is of 77.

More can be learned about the z-distribution at https://brainly.com/question/25890103

The line plot is used to show the lengths of the string colors using  check marks above the line

From the complete question, we have the following frequency table

String color      Length

Black string        [tex]3\frac 12 \ in[/tex]

Blue string          4 in

White string         [tex]3\frac 12 \ in[/tex]

Brown string         [tex]3\frac 14 \ in[/tex]

Green string         [tex]4\frac 34 \ in[/tex]

Express as improper fraction

String color      Length

Black string        [tex]\frac {14}4 \ in[/tex]

Blue string          [tex]\frac{16}4\ in[/tex]

White string        [tex]\frac {14}4 \ in[/tex]

Brown string       [tex]\frac {13}4 \ in[/tex]

Green string        [tex]\frac {19}4 \ in[/tex]

Since the lengths are fractions and the string color is a text, then

We plot the lengths on the x-axis and the string color on the y-axis

See attachment for the line plot

Read more about line plots at:

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Left side traingle:-

Area=

[tex]\\ \rm{:}\dashrightarrow \dfrac{1}{2}BH=\dfrac{1}{2}(6)(8)=4(6)=24km^2[/tex]

Now

Volume:-

Answer: 9 + 10 = 19

-129 x 5 =  -645

232 exponent of 2 = 53,824

32 x 400  = 12,800

400 / 23 = 17

53,824 + 12,800 + -645 + 19 + 17 = 66015

Step-by-step explanation:

Answer:

i don't know I don't have ideas

Answer:

$68.00

Step-by-step explanation:

16 x 425 = 6800

Just move the decimal 2 places to the left to get 68

Matthew spends $68 on gas as the rate of gas is $4.25 per gallon.

Per unit is a technique of expressing a quantity's value in terms of a base or reference quantity. Each system variable or quantity in a per-unit system is normalized in relation to its own base value.

Given Matthew bought 16 gallons of gas for $4.25 per gallon.

Since the price per gallon = 4.25

The price of the gas for 16 gallons = 4.25 * 16

The price of the gas for 16 gallons = 68.00

Therefore, Due to the $4.25 per gallon price, Matthew spends $68 on gas.

Learn more about per unit here:

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Answer: 17 degrees

Step-by-step explanation: Because you have angle A= 163, you can tell that angle B is 17 degrees (sum of angles on one side of a straight line add up to 180). Line M and line N are parallel, so they have corresponding angles, making angle B and angle X are the same. See picture attached for my diagram :). hope this helped!

Hello.

Use the Distributive Property which states

a(b+c)=ab+ac

Simplify:

[tex]\hookrightarrow[/tex] [tex]\mathrm{3(9k-1)}[/tex]

[tex]\hookrightarrow[/tex] [tex]\mathrm{27k-3}[/tex]

Be sure to multiply 3 by both terms inside the parentheses.

I hope it helps.

Have an awesome day.

[tex]\boxed{imperturbability}[/tex]

Hey there!

The Distributive Property states that

a(b+c)=ab+ac

where

a, b, and c can be either constants or variables.

Now that we know what the property states, let's simplify:

3(9k-1)

multiply:

3 times 9k and 3 times -1

27k-3

Hope everything is clear.

Let me know if you have any questions!

#LearningIsFun

Answer:

18 times 15 times 9 = 2430 cubed inches

Step-by-step explanation:

Answer:

I think 58% I’m not 100% sure but yea

Step-by-step explanation:

I divided the number of votes for printed 71 by the total number of votes 122 so 71/122=.58 58%

Answer:

b≈12.78 ; c≈15.25

Step-by-step explanation:

See image.

Answer:

1.1150

Step-by-step explanation:

x(86.90) = 96.90

86.90x = 96.90

86.90x/86.90 = 96.90/86.90

x = 1.120

Answer:

[tex]\huge\boxed{\sf x = 1.12}[/tex]

Step-by-step explanation:

x (85 + 1.90) = 96.90

Add

x (86.90) = 96.90

Divide 86.90 to both sides

x = 96.90 / 86.90

x = 1.12

[tex]\rule[225]{225}{2}[/tex]

Answer:

====================================================

Explanation:

The first task is to sort the items given.

The sorted set is {18, 20, 22, 26, 28, 30, 31}

There are 7 values in that set. The median is going to be in slot 4 because n/2 = 7/2 = 3.5 rounds to 4.

The value in slot 4 is 26, meaning the median is 26.

There are 3 values below the median, and 3 values above it.

L = lower set = items below the median

L = {18,20,22}

U = upper set = items above the median

U = {28,30,31}

The median of set L is 20, showing that Q1 = 20 is the first quartile.

The median of set U is 30, meaning Q3 = 30 is the third quartile.

The min and max are exactly what they sound like: they are the smallest and largest items. In this case, we have min = 18 and max = 31.

Answer:

-1/3

Step-by-step explanation:(if treasure of change is "rate of change")

Equation of a line: mx + b

m=-1/3: slope

b: y-intercept

^Whenever working with an equation of slope/rate of change the above variables have specific meanings.

Slope is another term for rate of change so the rate of change would be -1/3.

m=-1/3=slope/rate of change

b=4=y intercept

Answer:

A

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5 - 2 = 3 cupcakes left for herself

2 - 1 = 1, kakashi has 1 sharingan now and so does obito

Answer:

408 students = 60%

408 x 100/60

= 680 students in total

Answer:

8.75%

Step-by-step explanation:

Answer:

8.75%

Step-by-step explanation:

money given= $60

Price=$48

returned money should be=$60-$48

                                            =$12

received= $7.80

sales tax=$12-$7.80

              =$4.2

%=Sales tax /price×100

=$4.2/$48×100

=8.75%

Answer:

count how many time you need to move the decimal point to only have 1 number on the left

4,200,000 = 6 times

4.2 × 10^6

Answer:

No, Hillary is incorrect. There's 20oz of punch for every 4 servings.

Step-by-step explanation:

80oz / 20oz = 4

16 servings / 4 = 4 servings

So, instead of there being 20oz of punch for every 5 servings, there would be 20oz of punch for every 4 servings.

Answer:

8x - 4

Step-by-step explanation:

3x - 5 + 5x + 1

8x - 4

Answer:

c

Step-by-step explanation: