HELP ILL GIVE MOST BRAINLY AND 20 POINTS

Answer:

Frue

Step-by-step explanation:

Answer:

Option D)

The area below the standardized test score is 0.8413

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 85

Standard Deviation, σ = 5

We are given that the distribution of score is a bell shaped distribution that is a normal distribution.

Formula:

[tex]z_{score} = \displaystyle\frac{x-\mu}{\sigma}[/tex]

P(score is below 90)

[tex]P( x < 90) = P( z < \displaystyle\frac{90 - 85}{5}) = P(z < 1)[/tex]

Calculation the value from standard normal z table, we have,  

[tex]P(x < 90) =0.8413 = 84.13\%[/tex]

Thus, the correct answer is

Option D)

The area below the standardized test score is 0.8413

Answer:

Step-by-step explanation:

slope=6

y-int=0

just plot this on a graph

The expression (2x + 17) represents how much money Gary will have left over after purchasing two pairs of jeans.

To find out how much money Gary will have left over after purchasing two pairs of jeans, we need to subtract the cost of the jeans from the total amount Gary has.

Total amount Gary has = (10x + 7)

Cost of two pairs of jeans = (2(4x - 5))

Now, subtract the cost of jeans from the total amount:

Leftover money = (10x + 7) - 2(4x - 5)

Let's simplify this expression:

Leftover money} = 10x + 7 - (8x - 10)

Leftover money} = 10x + 7 - 8x + 10

Leftover money} = 2x + 17

So, the expression (2x + 17) represents how much money Gary will have left over after purchasing two pairs of jeans.

Question

Answer:

Out of all four, your answer would be the second choice: Y=0.4X.

Step-by-step explanation:

In order to get the answer, all you have to do this divide any y value you find on the line by the any x-value (as long as they're connected).

In this case, I decided to divide 2 by 5.

2/5 = 0.4.

You can also divide 4 by 10 and 6/15. You'll always get 0.4 as your answer.

P.S. I wish you good luck with the rest of your assignment!!

Answer:

y - 4 = 3(x - 0)

y - 4 = 3x - 0

y = 3x + 4

Step-by-step explanation:

Answer:

A) 0.072 = 7.2%

B) 8.3333 at-bats (8 to 9 at-bats)

Step-by-step explanation:

A)

If the chance of hitting a home run is 0.12, the chance of not hitting a home run is 1 - 0.12 = 0.88.

To find the probability of the next home run being in the fifth strike, we need the four other strikes to not be a home run, so the probability is:

P = (0.88)^4 * 0.12 = 0.072 = 7.2%

B)

To find the expected number of at-bats until the next home run, we just need to divide 100% by the probability of hitting a home run (0.12 = 12%):

100/12 = 8.3333

So the expected number is 8 to 9 at-bats

Answer:

see explanation

Step-by-step explanation:

The centre of circle B requires to be coincident with centre of circle A

(- 1, 4 ) → (2, 3 )

That is a translation of < 3, - 1 >

This ensures that the circles are concentric ( have the same centre )

radius of B is 10 and radius of A is 5, thus

dilatation = [tex]\frac{5}{10}[/tex] = [tex]\frac{1}{2}[/tex]

Answer: The HL Theorem.

Step-by-step explanation: We are given that the triangles have a congruent 90 degree angle and two congruent sides. This would indicate towards SAS but in this case, that doesn't work because the angle is not in between the two congruent sides. We know that the triangles are right, and that their hypotenuses are congruent and that one leg is congruent. Thus, the answer must be HL (hypotenuse & leg).

Answer:

The HL Theorem.

Step-by-step explanation:

Step-by-step explanation:

Multiply both numbers so

25x2 - 6x + 6x - 1

25x2 - 1

Answer:

25x power of 2   subtract 1

Step-by-step explanation:

Answer:

Step-by-step explanation:

As we know that:

=> ∠ABK=∠KBD=x

=> ∠ABD=2x

=> ∠KDB=∠ABD=2x

∠AKB=∠KDB+∠KBD=2x+x=3x

Please have a look at the attached photo

Answer:

He can stand on one leg for 228 seconds.

Step-by-step explanation:

You multiply the 3.8 seconds by 60.

So, 3.8 * 60 = 228

Hope this helps :)

Answer: 12

Step-by-step explanation: (s-2)(180)=1800, s-2=10, s=12

Using the formula for the sum of the interior angles of a polygon, we can determine that a polygon with an interior angle sum of 1800 degrees has 12 sides.

To determine the number of sides a polygon has based on its interior angle sum, we can use the formula for the sum of the interior angles of a polygon, which is (n - 2) times 180 degrees, where n is the number of sides of the polygon. Given that the sum of the interior angles is 1800 degrees, we can set up the equation n - 2 = 1800 / 180, which simplifies to n - 2 = 10. Solving for n gives us n = 12, so the polygon must have 12 sides.

Rounded to the nearest hundredth, the volume of the sphere with a radius of 4 ft is approximately 267.95 cubic feet.

The formula for the volume V of a sphere is given by:

[tex]\[V = \frac{4}{3} \pi r^3\][/tex]

Given:

Radius r = 4 ft

Let's calculate the volume using the given radius:

[tex]\[V = \frac{4}{3} \times 3.14 \times 4^3\][/tex]

[tex]\[V = \frac{4}{3} \times 3.14 \times 64\][/tex]

[tex]\[V = \frac{4}{3} \times 200.96\][/tex]

[tex]\[V \approx 267.95\][/tex]

Answer:

Nina is 25, Sam is 15

Step-by-step explanation:

5 years ago, Nina was 2S, and Sam was S.

In 5 years, she will be 1.5S and Sam is S.

In a span of 10 years, she will be 0.5S less.

20, 10 5 years ago

Currently, 25 and 15 years.

30 and 20 years in 5 years.

20*1.5=30

By solving from an expression Nina is currently 25 years old and Sam is currently 15 years old.

In mathematics, an expression is a combination of one or more numbers, variables, constants, and operators, which when evaluated, produce a value. Expressions can include mathematical symbols such as addition, subtraction, multiplication, division, exponents, roots, logarithms, and trigonometric functions.

Let's start by assigning variables to their current ages. Let N be Nina's current age and S be Sam's current age.

We know from the first sentence that 5 years ago, Nina was twice as old as Sam. So we can set up an equation based on that:

N - 5 = 2(S - 5)

Expanding the right side:

N - 5 = 2S - 10

N = 2S - 5

Now we can use the second sentence, which tells us that in 5 years Nina will be 1.5 times as old as Sam.

N + 5 = 1.5(S + 5)

Expanding the right side:

N + 5 = 1.5S + 7.5

N = 1.5S + 2.5

We have two equations, one for N in terms of S and one for N in terms of S. We can set them equal to each other:

2S - 5 = 1.5S + 2.5

Solving for S:

0.5S = 7.5

S = 15

So Sam is currently 15 years old. We can use either equation to find Nina's age:

N = 2S - 5

N = 2(15) - 5

N = 25

So Nina is currently 25 years old.

To know more about an expression follow

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Answer:

168ft

Step-by-step explanation:

1/2(6)(4)=12

1/2(6)(4)=12

(9)(5)=45

(9)(5)=45

(9)(6)=54

12+12+45+45+54=168

To solve for three consecutive integers whose sum is 9, we can express the integers as n, n + 1, and n + 2. Using the equation n + (n + 1) + (n + 2) = 9, we find that n = 2. Therefore, the three consecutive integers are 2, 3, and 4.

To solve for three consecutive integers whose sum is 9, we can start by expressing the integers in terms of a variable. Let's use the variable n to represent the first integer.

The second integer would then be n + 1, and the third integer would be n + 2.

The sum of these three integers is given as 9, so we can write the equation n + (n + 1) + (n + 2) = 9.

Simplifying the equation by combining like terms, we get 3n + 3 = 9. Subtracting 3 from both sides, we have 3n = 6. Finally, dividing both sides by 3, we find that n = 2.

Therefore, the three consecutive integers are 2, 3, and 4.

Answer:

1,715

Step-by-step explanation:

100-65=35

x*(.65)=1,115

1,715

Answer:

40

Step-by-step explanation:

Because these angles are the same, we can make an equation, 5x-5=3x+13.

2x - 18  =   2 • (x - 9)

Solve :    2   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solve  :    x-9 = 0  

Add  9  to both sides of the equation :  

x = 9

Replace x with 9 in this equation,  3(9) + 13

27+13

=40

The sum of one and the product of four and a number looks like this: 1 + (4n) or 1 + (4 x n) whatever you prefer.

Answer:

98/200= 49% B.

Answer:

$4

Step-by-step explanation:

Answer:

Step-by-step explanation:

79.54*.005=0.3977*100=39.77 or .005*80=.40*100=40

Answer:

3 cups of powder

Step-by-step explanation:

8/2 divided by 2=

4/1

4/1 x 3= 12/3

the 12 represents the water and the 3 represents the powder

Answer: 3 cups of powder

Step-by-step explanation

8    12.  first you cross multiply so the equation would be 8x = 24

2     X.   The you do division to get the answe for x                 X = 3

x represents the amount of powder that is needed so you just replace x for cups of powder! And done!

Answer:

c) 380 m²

Step-by-step explanation:

A = π·r²

= 3.14×121

= 379.94

≈ 380 m²

Guilherme observed the number of minutes in an hour his dormmates spent on social media sites while they were at the library. He reported his data in the following table. Dormmate Number of minutes on social media Vera 131313 Timothy 000 Manueala 141414 Khaled 363636 Yash 181818 Fernanda 161616 How many dormmates spent less than 202020 minutes on social media sites?

Answer:

15.5

Step-by-step explanation:

First, let's add up all of the minutes on social media.

13+0+14+36+18+12=93 min

Now we need to divide the total by the number of dormmates.

93/6

15.5

Answer:

3(3x + y)

Step-by-step explanation:

Sorry if its wrong

By substituting the given x-values from the table into the equation y = x² + 2x - 4, we found that a=-4, b=-5, c=4, and d=11.

The values of a, b, c, and d can be found by substituting the given x-values from the table into the formula y = x2 + 2x - 4.

For a, place -2 in the equation so we get y = (-2)2 + 2*(-2) - 4 = 4 - 4 - 4 = -4.

For b, place -1 in the equation, and it results y = (-1)2 + 2*(-1) - 4 = 1 - 2 - 4 = -5.

The third value, c, is computed by substituting 2 for x to obtain y = (2)2 + 2*2 - 4 = 4 + 4 - 4 = 4.

Lastly, for d, the y-value when x is equal to 3 is y = (3)2 + 2*3 - 4 = 9 + 6 - 4 = 11.

So, the solutions are a=-4, b=-5, c=4, and d=11.

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Answer:

Positive

Step-by-step explanation:

Since there are two x-intercepts, -2 and 2, there is a positive discriminant. If the parabola was below the x axis and opened downwards, the discriminant would be negative.

Answer:

positive

Step-by-step explanation:

Answer:

A. 25/4

Step-by-step explanation:

[tex](5/2)^{2}[/tex] = 25/4