Noel’s brother is 3 times as old as Noel. The sum of their ages is less than 20. What’s the oldest age that Noel could be?


Identify:


Strategize:


Set up:


Solve:


Check




please help meeee!!!!

Answers

Answer 1
The oldest age noel can be is 10 because
you set up the equation let’s say noels brother is x so x=3n and the other equation x+n<20 so then you replace x with 3n since there equal to each other so u have 3n+n<20 the you subtract n and 3n by n to eliminate the variable and u end up with 2n<20 and you divide both sides by 2 to get the variable by its self and then you get n<10
Answer 2

Answer:

The oldest Noel can be is 6

Step-by-step explanation:

6x3=18

18<20

Noel: 6

Noels' brother: 18


Related Questions

I NEED HELP ASAP PLEASE!!! THIS IS EXTREMELY URGENT! I WILL MARK BRAINLIEST!



Gladys classifies the following system of equations.

y = 6x + 2

y = 6x + 1

Select Correct or Not correct for each statement.

Statement


A. The system is inconsistent because the slopes are the same and the lines are different.

B .The system is dependent because the y-intercepts are different.

Answers

The answer is B I think

At its closest, Saturn is about 743,000,000 miles from Earth

Answers

At its closest, Saturn is about 743,000,000 miles from Earth. A deep-space probe travels from Earth to Saturn at an average speed of 25,000 miles per hour.

At its closest, Saturn is about 743,000,000 miles from Earth. And a deep-space probe travels from Earth to Saturn at an average speed of 25,000 miles per hour.

Step-by-step explanation:

r = 4 in., θ = 11 rad; find s

Answers

Answer:

The arc length s = 44 inches

Step-by-step explanation:

We are given:

r = 4 in

Ф = 11 radians

We need to find s

The formula used is: [tex]s=r\theta[/tex]

where s represents arc length, r is radius and Ф is angle in radians

Putting values and finding s

[tex]s=r\theta[/tex]

Put r = 4 and Ф = 11

[tex]s=4\times 11\\s=44[/tex]

So, the arc length s = 44 inches

A grapefruit weighed 0.65 pound. Which fraction is equivalent to the weight of the
grapefruit in pounds?

Answers

Answer:

65/100 pounds

Step-by-step explanation:

P.S Can I have brainliest?

Answer:

13/20

Step-by-step explanation:

Write 0.65 as [tex]\frac{0.65}{1}[/tex]

Multiply both numerator and denominator by 10 for every number after the decimal point

0.65 × 100/1 × 100 =  [tex]\frac{65}{100}[/tex]

[tex]\frac{65}{100}[/tex] reduced is 13/20

I need help plzzzz!!!!!!!!:)
A. y=-2/3x-4/3
B. y= - 2/3x-10/3
C. y= -2/3x-2/3
D. y= -2/3x -17/4

Answers

Answer:

B: y = -2/3x - 10/3

Step-by-step explanation:

The point is at (-2,-2), therefore when you input -2 into the desired equation, it should yield -2 as our output. If we use the equation B, the equation becomes

-4/3 - 10/3 which is -6/3. After dividing it we get -2 as the output.

To find the line yourself we use the point slope formula

y - y1 = m(x - x1)

The line is parallel to the one on the graph so the slope or m is equal to -2/3

We input the coordinates we want for y1 and x1.

y - (-2) = -2/3 (x - (-2))

y + 2 = -2/3x - 4/3

y + 6/3 = -2/3x - 4/3

y = -2/3x - 10/3

Y=-2/3x-10/3 so BBBBBBBBBBB

10. Which point satisfies the system below?
A (1, 2)
B. (0,0)
C. (0,4)
D. (2,1)
mons
y2-2x + 2.
y ≤ 2x + 2

Answers

Step-by-step explanation:

A is the answer of this

________

Please help me with 1 and 2

Answers

Answer:

the first one is likely and the second one is impossible

Answer:

certain impossible

Step-by-step explanation:

so ya have a good day

Order -5, -7, 0, and 4 from least to greatest.

Answers

Answer:

OK so its -7,-5,0,4

hope that helps!

Step-by-step explanation:

(PLEASE HELP) the semester ends in a week I need help.

Answers

Answer:

2.8

Step-by-step explanation:

This is because you can divide 2 by 3. Then multiply 4.2 by that number and that gets you your answer.

4.2 ÷ 3 = 1.4

1.4 times 2 = 2.8

if
[tex] {x}^{2} + {y}^{2} = 11[/tex]
[tex]2xy = 7[/tex]
find the value of
[tex] {x}^{2} + {y}^{2} + 6xy[/tex]

Answers

Answer:

32

Step-by-step explanation:

x²+y² = 11 equation--(i)

2xy = 7 equation--(ii)

Here,

= x²+y²+6xy

= 11 + 6xy (x²+y² = 11 from equation--(i))

= 11 + 3 × 2xy

= 11 + 3 × 7 (2xy = 7 from equation --(ii))

= 11 + 21

= 32

Not sure what the answer is?

Answers

Answer:

18

Step-by-step explanation:

11 * 2 = 22

9 * 2 = 18

A pond contains 20 tadpoles, of which f are frog tadpoles and the others are toad tadpoles. If 10 more frog tadpoles are added to the pond, the probability of catching a frog tadpole is doubled. Find f

Answers

Answer:

The value of f is 5

Step-by-step explanation:

Initially, the number of frog tadpoles = f

The initial probability of catching a frog tadpole = f/20

Adding 10 more frog tadpoles,

Number of frog Tadpoles = f +10

Total number of tadpoles in the pond = 20+10 = 30

new probability of catching a frog tadpole = (f+10)/30

New probability of catching a frog tadpole = 2 x Initial probability of catching a frog tadpole

(f+10)/30 = 2 x (f/20)

(f+10)/30 = f/10

f+10 = f x 30/10

f+10 = 3f

2f = 10

f = 5

Math question help pls

Answers

The second one is right

What is the slope of this line?

Enter your answer as a whole number or a fraction in simplest
form in the box.

Answers

Answer:

0

Step-by-step explanation:

This is a horizontal line so thhe slope is zero

Answer:

Your answer is 5/8

Step-by-step explanation:

I used Microsoft Math

helppp it’s for someone else and I don’t feel like doing it

Answers

Answer:

3/10

Step-by-step explanation:

Answer: 3/10

Work (Easy Method): So the easy method is to count how many spaces are there, and since there are 10, you choose the 3/10

Work (Harder Method): You count the White spaces in both, and put it over the total spaces, So, since there's 4 white spaces in Tracy, and 10 total spaces, you do 4/10, and same goes with Carol. So, you just subtract 7/10 by 4/10, and you get 3/10

I hope this helps, and Happy Holidays! :)

HELPPPPPP SOLVE FOR Y

Answers

Answer:

y= 15

Step-by-step explanation:

The square shown on the left side of the problem is equivalent to 90 degrees.   Two 90 degree angles (complementary angle) equals to l80 degrees (a straight angle). Equation that is set up to solve for y: 6y= 90. 90 divided by 6 is 15.

4. Given F(x) = -5x - 8, find F(6)

Answers

F(x) = -5x - 8, find F(6)

f(6) = -5(6) - 8

f(6) = -30 - 8

f(6) = -38

3 |d + 1 |-7>= -1
I don’t know if it’s no solution or not

Answers

Answer:   [tex]d \ge 1 \ \text{ or } \ d \le -3\\\\[/tex]

Both parts are needed to form the full solution set.

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

Work Shown:

[tex]3|d+1|-7 \ge -1\\\\3|d+1| \ge 6\\\\|d+1| \ge 2\\\\d+1 \ge 2 \ \text{ or } \ d+1 \le -2\\\\d \ge 1 \ \text{ or } \ d \le -3\\\\[/tex]

In the second step, I added 7 to both sides. In the third step, I divided both sides by 3. Afterward, I used the rule that [tex]|x| \ge k[/tex] breaks down into [tex]x \ge k \ \text{ or } \ x \le -k[/tex] for some positive value k. The last thing to do is to subtract 1 from both sides to fully isolate d.

D> -3 that’s what I think it is

Find the distance between the two points rounding to the nearest tenth (if necessary).
(4, -7) and (-1,5)

Answers

Answer:

The answer is 13

Answer: 13

Hope this helps :)

Which figure below does not illustrate rotational symmetry?

Answers

Answer:

the answer is F

Step-by-step explanation:

The correct option is option F , that is figure F shows the rotational symmetry.

What is rotational symmetry ?

An object's ability to maintain the same shape when rotated about its own axis is known as rotational symmetry.

Some figures are given and we have to tell which figure doesn't illustrate rotational symmetry.

Let's check them all , one by one.

F)

We know that rotational symmetry meant a figure looks the same when it is rotated. Here , if we consider a point on the circle and try to rotate it about its own axis , then we get to know that the figure does not looks same in all directions.

So , this figure doesn't have rotational symmetry.

G)

This figure is when rotated about its own axis , we get that that it looks same in all directions. This figure has rotational symmetry.

H)

This figure also has rotational symmetry.

G)

We know that a triangle follows the rotational symmetry. If we rotate it , we get the same looks in all directions. This figure has the rotational symmetry.

Therefore , the correct option is option F , that is figure F shows the rotational symmetry.

Learn more about rotational symmetry here :

https://brainly.com/question/28643102

#SPJ2

please solve for U as soon as possible.

Answers

Answer:

u = the square root of ([tex]v^{2} - 2 as[/tex])

Step-by-step explanation:

I could not figure out how to get [tex]v^{2} - 2as[/tex] under the square root symbol so I typed it out in the answer.  To solve for u, we subtract 2as from both sudes and then take the square root of both sides.  Hope this helps!

3. What is a polynomial function in standard form with zeros 1,-1, 2, and 4?

Answers

Hi
Check out the attached photo

Answer:

x⁴ - 6x³ + 7x² + 6x - 8

Step-by-step explanation:

De un grupo de 85 personas, 40 estudien y 50 trabajan, 10 estudian y trabajan.
a) ¿Cuántas no estudian y trabajan?
b) ¿Cuántas personas únicamente se dedican a estudiar?
c) ¿Cuántas personas únicamente se dedican a trabajar?​

Answers

Answer:

a) 5

b) 30

c) 40

Step-by-step explanation:

(no entiendo mucho espanol pero voy a ayudar...)

a) hay 10 que haces los dos, 30 que solo estudien, y 40 que solo trabajan. Con eso, 80-10-30-40 = 5, y asi tienes 5 personas que no estudian y no trabajan

b) las personas que estudian son 40, y 10 trabajan tambien, asi solo tienes 30 personas que unicamente se dedican a estudiar.

c) las personas que trabajan son 50, y 10 estudian tambien, asi solo tienes 40 personas que unicamente se dedican a estudiar.

5/8 divided by 1/3 in simplest form

Answers

Answer: 1-7/8.

Step-by-step explanation;

Division of fractions is equivalent to multiplication by the reciprocal of the second fraction:  5/8 / 1/3 = 5/8 * 3/1.

Once rearranged, multiply all of the numerators by each other. Do the same with the denominators and form a new fraction with these values:  15/8.

15 ÷ 8 = 1R7, therefore:  1-7/8.

The required, 15/8, is the simplest form. It cannot be further reduced since the numerator (15) and the denominator (8) have no common factors other than 1.

To divide fractions, we multiply the first fraction by the reciprocal of the second fraction. The reciprocal of a fraction is obtained by swapping the numerator and denominator. Let's calculate the division:

(5/8) ÷ (1/3)

Find the reciprocal of the second fraction:

Reciprocal of (1/3) = 3/1 = 3

Now, multiply the first fraction by the reciprocal of the second fraction:

(5/8) * 3 = (5 * 3) / 8 = 15 / 8

So, the answer to 5/8 divided by 1/3 in simplest form is 15/8.

Learn more about the division of fractions here:

https://brainly.com/question/7155522

#SPJ6

Solve the equations and check the results
4x+5=17-2x

Answers

Answer:

★・・・・・・★

Hello, there I'm here to you help today!

★・・・・・・★

●~●~●~●~●

Step 1:

[tex]4x+5=17-2x[/tex]

subtract 4x on both sides to get 6x

[tex]5=17-6x[/tex]

Now subtract 17 on both sides

[tex]-12=-6x[/tex]

Lastly, divide -6 on both sides

[tex]\frac{-12}{-6} =\frac{-6x}{-6}= 2[/tex]

●~●~●~●~●

Hope you have a very good day <3

Lori-chan

True or false? The number 85 is both an integer and
a whole number.

Answers

Answer:

True

Step-by-step explanation:

Answer:

false

Step-by-step explanation:

A number consists of two digits. The sum of its digits is 16. If 28 is subtracted from the number, the digits interchange their place. Find the number. |.Give the answer only ​

Answers

Answer:

The number is 97

Step-by-step explanation:

Note: The difference should read 18 not 28, it must be a typo. In general such difference must be a multiple of 9.  

Let the digits are x and y.

If the first digit is x and the second digit is y, then the number is 10x + y.

According to the question we have:

x + y = 1610x + y - 18 = 10y + x ⇒ 9x - 9y = 18  ⇒ x - y = 2

Add up the equations:

x + y + x - y = 16 + 22x = 18x = 9

Find y:

9 + y = 16y = 7

The number is 97.

Helps pls I’ll give BRAINLIEST (foolish answers will be reported )

Answers

Answer:

I am for certain it is A

i may be wrong

Step-by-step explanation:

Find the value of x that makes the triangle a right triangle.

Answers

Answer:

Hi, I don't see an attachment with your question. But without any attachments to refer to. You use Pyrhagoras Theorem to solve this question.

Step-by-step explanation:

A^2 (Short side) + B^2 (Short side) = C^2 (Long side)

Stay safe and Merry Christmas! :)

Please help I will give brainliest

Answers

Answer

D

Step-by-step explanation:

Answer: option B

Step-by-step explanation:

if you use the number on the top of the shape on the right, then you have to compare it to the number on the top of the shape on the left. and vice versa for the numbers on the side of the shapes. it doesn't matter what number in the comparison goes on top of the fraction, but option C is the only answer with the correct calculations.

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