Help me please thank u

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.

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Yes; inductive reasoning is a valid method for determining the terms of a sequence. Option D is correct.

Given that,
A, E, I, …

Jorge reasons that the next letter in the sequence is M since three letters of the alphabet are skipped between each listed letter. Should Marci agree with Jorge's inductive reasoning is to be determined.

Inductive reasoning is a form of definining determinations by proceeding with patterns specific to the usual. It's generally distinguished with deductive reasoning, there it proceeds from general knowledge to specific conclusions.

Here,

Jorge reasons that the next letter in the sequence is M in A, E, I, … since three letters of the alphabet are skipped between each listed letter.
And Yes, Marci agrees with Jorge's inductive reasoning is a valid method for determining the terms of a sequence.

Thus, Yes; inductive reasoning is a valid method for determining the terms of a sequence. Option D is correct.

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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]

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:

I KNOW IT!!^^

Step-by-step explanation:

All right the answer would be 2.5x+2y=? so basically since x represents the cost of one pound of apples and y represents the cost of one bag of lettuce i had 2 this 2 last year i hope this helped u!!^^

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:

3(3x + y)

Step-by-step explanation:

Sorry if its wrong

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:

The answer is B

Step-by-step explanation:

The answer is B on edg2020. Hope this helps. #classof2020

Answer:

The answer is B

Step-by-step explanation:

The answer is B on edg2020. Hope this helps. #classof2023

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:

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.

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:

a=12

Step-by-step explanation:

To solve, we need to isolate the variable, a

1/4a =3

To do this, divide both sides by 1/4, or multiply both sides by the reciprocal of 1/4: 4/1

4(1/4a)=3(4)

The 4 and 1/4 will cancel out

a=12

Answer:

a = 12

Step-by-step explanation:

1/4 a = 3

Multiply each side by 4

1/4a*4 = 3*4

a =12

Answer:

c) 380 m²

Step-by-step explanation:

A = π·r²

= 3.14×121

= 379.94

≈ 380 m²

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

Answer:

1+7+8+8

Step-by-step explanation:

Answer:

1+7+8+8

Step-by-step explanation:

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]

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:

y - 4 = 3(x - 0)

y - 4 = 3x - 0

y = 3x + 4

Step-by-step explanation:

Answer: if i can get brainliest that would be great

x = Students

100=8(4)+x

Equation:

100=32+x

-32   -32

68=x

68 students are needed

Answer:

the answer is 92

Step-by-step explanation:

You have to subtract 8 students that signed up from the amount of students needed.

Answer:

98/200= 49% B.

Answer:

My explanation -->

Step-by-step explanation:

Go over to the left on the -4 and up 5 times and mark a dot on it.

Next, go up half a mark from 0 and put a dot there.

Then, go over to the left between the -2 and -4 and go up 5 times.

Lastly, from the 0, go down half way until the next horizontal line and place a dot there.

Answer:

the answer is c

Step-by-step explanation:

just took the test

Answer:

its a

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:

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: 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:

Answer:

7.87  × 10 ^6

Step-by-step explanation:

787,000 in scientific notation is 7.87 × 10⁶.

In Mathematics and Statistics, any numerical data (number) can be written in scientific notation as shown below:

[tex]a \times b^{n}[/tex]

Where

787,000 = 700,000 + 87,000

By counting the number of digits, we can logically deduce that they are equal to six (6). In this context, the given number can be written in scientific notation as shown below:

787,000 = 7.87 × 10⁶

Read more on scientific notation here: brainly.com/question/22369512

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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