Solve the system of equations by using substitution.​

Answer:

24m^2

Step-by-step explanation:

to get the length, we have to follow this equation:

2W + 2L = P

2(4) + 2L = 20

8 + 2L = 20

8 + 2(6) = 20

to get the area from this information, we have to follow this equation:

A = W • L

A = 4 • 6

A = 24m^2

lol also isn’t there a time limit on quizizz ?

Answer:

B. x + 3x ≤ 36

Step-by-step explanation:

bc the word AT MOST means ≤

so it would be B

Answer:

constant

Step-by-step explanation:

constant just trust

Answer:

no

Step-by-step explanation:

the slope is the angle of the line. to make this easier, I normally imagine rise/run. rise being the y axis and run being the x axis. if we change -3 to a fraction, it is -3/1. this basically means that from any given point, you go down 3 units, and over 1.

replace the (-3,0) point with a (3,1) point and it should be fixed.

Given:

Mean = 45

Standard deviation = 9

Confidence level = 95%.

To find:

The confidence interval.

Solution:

The formula for confidence interval is:

[tex]C.I.=\overline{x}\pm z\dfrac{\sigma}{\sqrt{n}}[/tex]

Where, [tex]\overline{x}[/tex] is mean, z is the z-value at given level of confidence, [tex]\sigma[/tex] is the standard deviation and n is the number of observations.

The z-value at 95% confidence level is 1.96.

Here number of observations are not given. Assume it is 1.

Putting [tex]\overline{x}=45,\sigma=9,z=1.96,n=1[/tex].

[tex]C.I.=45\pm 1.96\dfrac{9}{\sqrt{1}}[/tex]

[tex]C.I.=45\pm 1.96(9)[/tex]

[tex]C.I.=45\pm 17.64[/tex]

It can be written as

[tex]C.I.=[45-17.64,45+17.64][/tex]

[tex]C.I.=[27.36,62.64][/tex]

Approximate the value to the nearest whole number.

[tex]C.I.=[27,63][/tex]

The interval for the middle 95% of snowfall is  27 to 63.

Therefore, the correct option is A.

Answer:

drag the celucs

Step-by-step explanation:

Answer:

lol bro cheatinggggg nice

Answer:

20.9, 34

Step-by-step explanation:

How to find mean: add up all the numbers and  divide by how many numbers

19, 19, 20, 20, 20, 21, 22, 22, 22, 22, 23

(19+19+20+20+20+21+22+22+22+22+23)/11=230/11=20.9(rounded)

If the new mean is 22, sum of all the numbers is 22 times 12=264

264-230=34(new player age)

Answer:

Jesse's store will sell the phone cases for $14.80

Step-by-step explanation:

Cost price of the phone cases purchased by Jesse = $8

He marks them up 85%.

Therefore, selling price of the phone cases = $8 + (85% of $8)

                                                                        = 8 + ([tex]\frac{85}{100}\times 8[/tex])

                                                                        = 8 + 6.80

                                                                        = $14.80

Jesse's store will sell the phone cases for $14.80

Answer:

Horse

Step-by-step explanation:

takes less time to go 100 feet less.

Answer:

A horse.

Step-by-step explanation:

If you divide 400 by 8 you get 50 ft per second

If you divide 300 by 5 you get 60 ft per second.

Answer:

85 degrees

Step-by-step explanation:

A triangle's angles must add up to 180 degrees.

50 + 45 = 95

180 - 95 = 85

x = 85

Answer:

85

Step-by-step explanation:

50 + 45 = 95

180 - 95 = 85

Answer:

Attach a picture

Step-by-step explanation:

Answer:

y - 6 = -(x - 5)

Step-by-step explanation:

Start with the general point-slope form y - k = m(x - h).

Here m = -1, h = 5 and k = 6, and so, after substitutions, we have:

y - 6 = -(x - 5)

Answer:

-3

Step-by-step explanation:

use the equation y = mx + b where m is the slope and b is the y-intercept so just plug in what you know. y = 2/3x + 2 then solve the equation for x . To do that, just put y = 0 so then it would be -2 = 2/3x then -2/ 2/3 = x and -2 divided by 2/3 would be -3

Answer: 5966cm³

Step-by-step explanation:

The volume of a cylinder is calculated using the formula:

Volume = πr²h

where, π = 3.14

radius = 10cm

Height = 19cm

Volume = πr²h

= 3.14 × 10² × 19

= 3.14 × 100 × 19

= 5966.00cm³

Answer:

The Richter scale measures the largest wiggle (amplitude) on the recording, but other magnitude scales measure different parts of the earthquake. The USGS currently reports earthquake magnitudes using the Moment Magnitude scale, though many other magnitudes are calculated for research and comparison purposes.

Answer:the other point at x=-1 is (-1,0)

the other point at x=-1 is (-1,0)this fails the vertical line test so it is a relation not a function

Answer:

Sample

Step-by-step explanation:

Just took on Edge.

Sample describes the number 58.2 in the given problem.

Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.

A sample is a subset of individuals or items selected from a population, and statistics are values calculated from a sample.

As given, the governor of Florida randomly selected 500 Florida residents and determined their mean age to be 58.2 years.

This value is a sample statistic because it is calculated from a sample of individuals and is used to estimate a population parameter.

The number 58.2 represents a sample statistic.

Hence,  sample describes the number 58.2 in the given problem.

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Given:

The sequence is 2, 4, 8, 16,... .

To find:

The explicit formula for the sequence and use it to find the eleventh teen in the sequence.

Solution:

We have,

2, 4, 8, 16,...

It is a GP because the ratio between two consecutive terms are same..

Here,

First term: [tex]a = 2[/tex]

Common ratio: [tex]r=\dfrac{a_2}{a_}[/tex]

[tex]r=\dfrac{4}{2}[/tex]

[tex]r=2[/tex]

The explicit formula of GP is:

[tex]a_n=ar^{n-1}[/tex]

Putting [tex]a=2,r=2[/tex], we get

[tex]a_n=2(2)^{n-1}[/tex]

Put n=11 to find the 11th term of the given sequence.

[tex]a_{11}=2(2)^{11-1}[/tex]

[tex]a_{11}=2(2)^{10}[/tex]

[tex]a_{11}=2(1024)[/tex]

[tex]a_{11}=2048[/tex]

Therefore, the correct option is D.

Answer: 2^2 * 3^3

Step-by-step explanation: In this problem, you are only transferring each factor into an exponent. Since there are two factors of two and three factors of three, the answer would be two squared multiplied by three cubed.

Answer:

25

Step-by-step explanation:

Shawna needs 32 flowers and she has 7 flowers already.

Number of flowers she has to plant = 32 - 7 = 25

If 1 seed packet grows 1 flower, she needs 25 seed packets

Answer:

yes, the following is a function

Using long division 1020 ÷ 156 is equal to  654.

Addition is also known as the sum, subtraction is also known as the difference, multiplication is also known as the product, and division is also known as the factor.

Given, 102024  is divided by 156​.

First, we'll take up to 1020 ÷ 156 then we'll have a reminder of two-digit and a quotient of 1 digit we will bring down the next digit and continue the process until it is completely divisible or we have a remainder than is less than 156.

1020 ÷ 156

= 654.

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Answer:

a) f(3) = -19

b) x = -2 (I assume you have to find x, but the question isn't very clear)

Step-by-step explanation:

a) f(3) = -4(3) - 7 = -12 - 7 = -19

b) Suppose f(x) = 1. Then 1 = -4x - 7, so -4x = 8, and thus x = -2

Answer:

y-5=-3(x-10)

Step-by-step explanation:

y-y1=m(x-x1)

y-5=-3(x-10)