1. WILL GIVE BRAINLIST TO BEST ANSWER
Based on the data what would be the expected test score for a student that studies for 80

1. WILL GIVE BRAINLIST TO BEST ANSWER Based On The Data What Would Be The Expected Test Score For A Student

Answers

Answer 1

Answer:

90/100

Step-by-step explanation:

if you look at the graph on the bottom part it tells you the study time if you line it the left side which says the test score. so if they studied for 80 mins they are expected to have the score of between 85 and 90.


Related Questions

how many solution does 8m=-48 have​

Answers

Answer:

1 solution

Step-by-step explanation:

8m = - 48 ( divide both sides by 8 )

m = - 6 ← is the only solution

How many different 4-question geometry quizzes can a teacher make if there are 7 different problems to test on?.

Answers

Answer:

35 quizzes

Step-by-step explanation:

We need to determine how many ways we can choose 4 questions out of 7 to make the quizzes.

We do this by using the formula [tex]\displaystyle nCr=\frac{n!}{r!(n-r)!}[/tex] which describes the number of ways we can choose [tex]r[/tex] objects given [tex]n[/tex] possible choices. So, if [tex]n=7[/tex] and [tex]r=4[/tex], then:

[tex]_4C_7=\frac{7!}{4!(7-4)!}\\\\_4C_7=\frac{7*6*5*4!}{4!*3!}\\\\_4C_7=\frac{210}{6}\\\\_4C_7=35[/tex]

Hence, the teacher can make 35 different geometry quizzes.

PLEASE HELP NEED ASAP.
Enter the values needed to find the
length AB. (Simplify your answer.)
A (-5x, 4y)
AB = (3x)2 + ([?])
=
D
E
E
C (7x, -1y)
Distance Formula
d = V(x2 - x2)2 + (y2 - yu)?
B (-2x, -47)

Answers

Answer: 8y

Step-by-step explanation:

what is 10 x 10 to the power 8

Answers

Your answer is

1,000,000,000 (one billion)

Hope this helps.

Explanation would be appreciated but not needed.​

Answers

Perimeter is the outline of a closed shape.you calculate perimeter by adding the lengths of all the sides.

Please help me with this (20 points)



Answers

Answer:

x³-2x²-22x-21

Step-by-step explanation:

(x+3) (x²-5x-7)

x³-5x²-7x+3x²-15x-21

x³-2x²-22x-21

[tex]Answer☘️[/tex]

[tex]\large{\underline{ \boxed{ \sf{✰\:Important\:points }}}}[/tex]

[tex]\pink {\underline{ \boxed{ \sf{»\:distributive\:property }}}}[/tex]

⇝A property of functions that have a rule describing how the function can be performed to the individual components of another operation.

⇝If the operation ★ is distributive with respect to the operation °, then a★(b°c)=(a★b)°(a★c).

[tex] \sf➛(x + 3)( {x}^{2} - 5x - 7) \\[/tex]

[tex]\\ \sf \:➛ distributing \: x \: with \: ( {x}^{2} - 5x - 7) \\ \sf \: then \\ \sf \:➛ 3 \: with \: ({x}^{2} - 5x - 7)[/tex]

[tex] \sf \: ➛gives \\ \sf \: ➛{x}^{3} - 5 {x}^{2} - 7x + 3{x}^{2} - 15x - 21 \\ [/tex]

Now arranging termsthen adding nd subtracting like terms gives you:-

[tex] \sf➛{x}^{3} + 2 {x}^{2} - 22x - 21[/tex]

[tex] \underline{ \boxed{ \sf{✰\: Option\:D✓ }}}[/tex]

Hope it helps ~

A(x) = x( 48 - x)
When is A(x) at its maximum?
Explain or show how you know.

Answers

Answer:

When X = 24

Step-by-step explanation:

Use derivative to locate the turning point.

48 - 2X = 0, => X = 24

Please Answer This Ixl Asap!!!

Answers

Answer:

EH = 120 degrees

Step-by-step explanation:

angles in a circle add up to 360 degrees

arc EF + arc FG + arc GH + arch EH = 360

95 + 90 + 55 + EH = 360

240 + EH = 360

subtract 240 from both sides to isolate EH

EH = 120 degrees

PLEASE HELP!!
How many solutions can be found for the equation −4x − 11 = 2(x − 3x) + 13?

Answers

Answer: [tex]No~Solution[/tex][tex]s[/tex]

Step-by-step explanation:

Let's factor then solve to find the complex solutions.

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : [tex]-4x-11=2(x-3x)+13[/tex]

Equations that are never true:

[tex]1.1 ~~~~ Solve : -24 = 0[/tex]

This equation has no solution.

A non-zero constant never equals zero.

Therefore your answer is [tex]No~Solution[/tex]


A a right triangle has a hypotenuse length of 21 meters. It has
one leg with a length of 15 meters. What is the length of the other leg?
Express your answer as a square root.

Answers

Answer:

√216 meters

Step-by-step explanation:

» Concepts

The Pythagorean theorem states that in a right triangle, the sum of the squares of the legs is equal to the length of the hypotenuse squared. It's represented as an equation of a² + b² = c², where a & b are the legs, and c is the hypotenuse

» Application

To find the length of the other leg, we have to plug in the values of b and c into the equation. B would be 15 meters, and c would 21 meters.

» Solution

Step 1: Simplify both sides of the equation.

[tex]a^2+15^2+21^2[/tex] [tex]a^2+225=441[/tex]

Step 2: Subtract 225 from both sides.

[tex]a^2+225-225=441-225[/tex] [tex]a^2=216[/tex]

Step 3: Take square root of both sides.

[tex]\sqrt{a^2} = \sqrt{216}[/tex] [tex]a = \sqrt{216}[/tex]

Therefore, the length of the other leg is √216 meters.

Nate has £88.65 to convert into shekalim. the currency exchange he is using charges an 8% fee after the currency conversion has occured. about how many more shekalim will nate receive if he makes his trade on the day with the most favorable exchange rate than if he makes his trade on the day with the least favorable exchange rate? a. ins 41.69 b. ins 38.35 c. ins 31.68 d. ins 6.67

Answers

If he makes his trade on the day with the least favorable exchange rate, the amount received is ins 38.35

How to determine the amount received?

From the complete question, we have the following parameters:

£1= 0.47 --- least favorable rate

Given that the uses a charge of 8%, the amount received when he converts  £88.65 is calculated using:

Amount = Rate * Amount * (1 - 8%)

So, we have:

Amount = 0.47 * 88.65 * (1 - 8%)

Evaluate the product

Amount = 38.33

The closest amount to 38.33 is 38.35.

Hence, the amount received is ins 38.35

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I'm a little stuck on these problems!
100 points!!!

Answers

Answer:

coordinate, acute, ray, acute, star, ray

Step-by-step explanation:

The United States has a complex government system. One important tenet of this system is democracy, in which the ultimate power rests with the people. In the case of the United States, that power is exercised indirectly, through elected representatives. Although the U.S. has been a strong proponent of democracy, it did not invent democracy. The Greeks are often credited with pioneering a democratic government that went on to influence the structure of the United States. Read this article that describes how elements of ancient Greek democracy heavily influenced the figures that designed the United States government.

please help meeeee what the answer

Answers

Pytago: x^2+x^2=16^2 then solve it, you can find the value of x

Determine whether the events are mutually exclusive or not mutually exclusive. Then find the probability. Round to the nearest tenth of a percent, if necessary. 16. drawing a card from a standard deck and choosing a 7 or a 9.

Answers

The events are mutually exclusive and the probability of drawing a card from a standard deck and choosing a 7 or a 9 is 2/13

How to determine the probability?

The given parameters are:

Standard deck = 52

n(7) = n(9) = 4

The probability of choosing a 7 or a 9 is calculated as:

P(7 or 9) = P(7) + P(9)

So, we have:

P(7 or 9) = 4/52 + 4/52

Evaluate

P(7 or 9) = 8/52

Simplify

P(7 or 9) = 2/13

Hence, the probability of drawing a card from a standard deck and choosing a 7 or a 9 is 2/13

Read more about probability at:

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If u want u can answer 26 and 27 but if not just answer 26

Answers

26 is c

Step-by-step explanation:

Answer:

26 is Clay types 2 more words per minute than marsha. (c)

Step-by-step
if you study the number line correctly than you will find out your answer to number 26

1. What are the formulas for the two main types of energy?

Answers

Answers:

Kinetic Energy Formula: [tex]KE = \frac{1}{2} mv^2[/tex]

Potential Energy Formula: [tex]PE=mgh[/tex]

Explanations:

For KE:

Kinetic energy is directly proportional to the mass of the object and to the square of its velocity. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

For PE:

In the above equation, m represents the mass of the object, h represents the height of the object and g represents the gravitational field strength (9.8 N/kg on Earth) - sometimes referred to as the acceleration of gravity.

3. A bag of
Jelly beans contains 12 red, 17 white and 14 black jelly beans.

b) if 5 jelly beans are chosen at random, determine the probability that 2 will be white and 3 will
be black

Answers

In Total there are 43 jelly beans, which means that will be our denomintor.(sorry if i spelled that wrong)

12/43 are red      17/43 are white        14/43 are black = 43/43

27.9% of 43       +   39.5% of 43       +   32.6% are black = 100%

There is the highest chance that the jelly beans chosen will be white, with black following. 2 white & 3 black would be 5/43 which is 11.6% of the jelly beans in total. Of this chance there is about a 25% chance that white will be chose & 27-30% chance that black will be chosen.

I HOPE THIS HELPS <3!! & good luck.

Need help on math homework

Answers

The answer is 1 because everything is 1

1) x2 + 5x + 4 = 0
a =
b=
C =
vb2 - 4ac =
-

Answers

[tex]\text{Compare}~ x^2 +5x +4=0~ \text{with the standard form of quadratic equation}~ \\\\ax^2 +bx +c =0\\\\a=1\\\\b=5\\\\c=4\\\\\sqrt{b^2 -4ac} = \sqrt{5^2 -4 \cdot 1 \cdot 4} = \sqrt{25 -16} = \sqrt{9} =3[/tex]

Of all the students at a high school, 54% are in band and play sports. 78% of all students at the high school play sports. Find the probability that a student is in band given that the student plays sports. Round your answer to the nearest tenth.

A. 42.1%
B. 6.9%
C. 1.4%
D. 69.2%

Answers

Answer:

A. 42.1%

Step-by-step explanation:

Answer 42.1%
Explaination: yes

I need help asap with this problem

Answers

Answer:

  7.07 years

Step-by-step explanation:

The standard deviation of a population is easily calculated by a spreadsheet or calculator. Care must be taken to use the formula for population standard deviation, rather than the formula that assumes the values are a sample.

__

The attached calculator shows the standard deviation is about 7.07 years.

_____

Additional comment

The population standard deviation is the square root of the variance. The variance is the mean of the squares of the values, less the square of the mean of the values. The second attachment shows the calculation done this way.

The units of standard deviation are the same as the units of the members of the population. Here, that is "years."

How do you solve this using system of equations
y = 3x -1
y = -x +3

Answers

Answer:

1

Step-by-step explanation:

The first equation's y value can be replaced with -x + 3, then solve it:

3x - 1 = -x + 3

3x + x = 3 + 1

4x = 4

x = 4 divided by 4

x = 1

Answer:

Step-by-step explanation:

Enter a range of values for x.
a
a
3x-90 939
26
27
[?]

Answers

Answer:

3<x<34

Step-by-step explanation:

(Big side to big angle)

Solution: 27>26 => 93°>3x - 9°

102°>3x

34>x

HOPE THIS HELPS AND HAVE A NICE DAY <3

simplify 3(6-3) -2x2 + 15 /5

Answers

Answer:  [tex]\frac{3(6-3)-2x^{2}+15 }{5} : \frac{-2x^{2}+24 }{5}[/tex]


You're welcome.

True or false? if you are balancing an object on its center of mass, there must be equal amounts of mass on both sides of the center of mass

Answers

The statement 'if you are balancing an object on its center of mass, there must be equal amounts of mass on both sides of the center of mass" is false.

What is center of mass?

A place at which the entire mass of a body or all the masses of a system of particles appears to be concentrated is defined as the center of mass of a body or system of particles.

We have statement:

If you are balancing an object on its center of mass, there must be equal amounts of mass on both sides of the center of mass.

As we know, center of a mass is an object balance point it doesn't need to have equal amounts of mass on both sides of the center of mass.

Thus, the statement 'if you are balancing an object on its center of mass, there must be equal amounts of mass on both sides of the center of mass" is false.

Learn more about the center of mass here:

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David has a stack of 30 cards, which are numbered 1 through 30. what is the exact probability of randomly selecting a card from the stack with a number that is even or is less than 10?

Answers

Answer:

1/3 or 1:3

Step-by-step explanation:

since there is a 10/30 chance

to simplify divide by 2

10/30 ÷ 2/2 = 5/15

then divide by 5

5/15 ÷ 5/5 = 1/3

your answer is 1/3

another simple way to simplify

since there is a zero (0) in both the ones (1s) spot on both the numerator and denominator in 10/30, you may just cross out both zeros (0s) to simplify the value

10/30 simplified/taken away 0s = 1/3

hope this helps:)

There are 22 students in a homeroom. How many different ways can they be chosen
to be elected President, Vice President, and Treasurer?

Answers

Answer:

9240

Step-by-step explanation:

22

×

Vice President

21

×

Treasurer

20

Answer:

Step-by-step explanation:

9240

Find the equation of the circle with center (4,5) which passes through the y-intercept of the line 5x-2y+6=0​

Answers

Answer:

(x-4)^2 + (y-5)^2 = 20

Step-by-step explanation:

Rearrange the line equation of 5x - 2y + 6 = 0

So y = 5/2x +3

The y-intercept of the line equation is 3 as when x=0, y=3.

We know the Circle has the formula [tex](x-4)^2 + (y-5)^2 = ?^2[/tex] from the question but with the intercept, we can find the entire equation as the y-intercept is (0,3) so we can substitute it into the equation to find the full equations so:

[tex](0-4)^2 + (3-5)^2 = ?^2[/tex]

This simplifies to:

[tex](-4)^2 +(-2)^2[/tex] = [tex]?^2[/tex]

16 + 4 = 20 = [tex]?^2[/tex]

The answer is 20 so the equation of the circle is [tex](x-4)^2 + (y-5)^2 = 20[/tex]

What is the product? startfraction 4 k 2 over k squared minus 4 endfraction times startfraction k minus 2 over 2 k 1 endfraction startfraction 4 over 2 k 1 endfraction startfraction 2 over k minus 2 endfraction startfraction 2 over 2 k 1 endfraction startfraction 2 over k 2 endfraction

Answers

The product of the expression [tex](\frac{4k+2}{k^2-4})* \frac{k-2}{2k+1}[/tex]  is the expression [tex]\frac{2}{k+2}[/tex]

What is an equation?

An equation is an expression that shows the relationship between two or more variables and numbers.

Given the expression:

[tex](\frac{4k+2}{k^2-4})* \frac{k-2}{2k+1} \\\\This\ can\ be\ simplified\ to:\\\\(\frac{2(2k+1)(k-2)}{(k+2)(k-2)(2k+1)}) \\\\=\frac{2}{k+2}[/tex]

The product of the expression [tex](\frac{4k+2}{k^2-4})* \frac{k-2}{2k+1}[/tex] is the expression [tex]\frac{2}{k+2}[/tex]

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The figure shown is formed by a square and a semicircle. Line segment BC is 4 cm. Find the area of the figure.

Question 5 options:

22.28 cm2

20.56 cm2

32.642

22.542

Answers

Step-by-step explanation:

area of square = 16

area of semi circle =( π/2)*4 = 2π

total area = 22.48cm^2

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