Mathematics Middle School

Three siblings are born on the same date in consecutive years.
The sum of their ages is 42. What is the age of the oldest sibling?

A. 13
B. 14
C. 15
D. 16

Answers

Answer 1

Answer:

C.

Step-by-step explanation:

15+14+13=42

Hope this helps :)

Answer 2

The age of the oldest sibling is 15 years old.

What is consecutive number?

Numbers that follow each other continuously in the order from smallest to largest are called consecutive numbers.

Here, let the age of youngest sibling be x years

              the age of middle sibling be (x+1) years

              the age of oldest sibling be (x+2) years

According to question,

        x + (x+1) + (x+2) = 42

          3x + 3 = 42

           3x = 39

             x = 13

Thus, the age of the oldest sibling is (x+ 2) years = 15 years old.

Learn more about Consecutive number from:

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Related Questions

The figure shows a parallelogram inside a rectangle outline: A parallelogram is shown within a rectangle. The length of the rectangle is 3 over 4 foot and the width of the rectangle is 1 over 2 foot. The two equal bases of the triangles outside the parallelogram are labeled 1 over 8 foot. What is the area of the parallelogram? 1 over 32 square foot 5 over 16 square foot 9 over 32 square foot 6 over 16 square foot

Answers

Answer=5/16 or 0.3125 feet

Step-by-step explanation:

look at the photo! first gets brainliest pls hurry. 15 points!!!!!!

Answers

Answer:

apples: 17

oranges: 7

bananas:11

First answer is correct

Need help 8th grade math

Answers

The third answer down is correct

Answer:

D

Step-by-step explanation:

ASAP PLEASE HELP ILL GIVE BRAINLIEST!!

Answers

Answer: A=2 B= 1.75

Step-by-step explanation:

zoom in to see. please answer

Answers

do u still need help?

Answer:

$8.25

Step-by-step explanation:

Shoes rental cost $2.75

Bowling cost $2.50 = 2.50 x3 = $7.50

1/2 price voucher for bowling  =  7.50 x 1/2 = $3.75

Pretzel cost $1.75

Total cost 2.75+3.75 + 1.75 = $8.25

b) Calculate the area of the window using the dimensions given in Part A. Show your work and explain your reasoning. (4 points)

Answers

Answer: (15.2 + 11.2) x (8.4/2) = 110.88

Step-by-step explanation:

Hope this helps :)

Leroy is a sales person. He sold a crystal vase for $203 and earned 13% commission. How much commission did Leroy earn?

Answers

Answer:

For the vase, 26.39

Step-by-step explanation:

203*13%=26.39

the answer is 26.39 to ur question

I only have 10 minutes the answer the question please help me I will give you brainlist

Answers

1 white shirt
1 black shirt
1 blue shirt
1 blue pant
1 tan pant
There are 5 total articles of clothing and 2 that he could end up wearing (white shirt & tan pants)
so the probability equals 2/5



If the mean absolute deviation is close to 0, then what does that mean about the data set

Answers

The datum would be around, or, the same value; likewise, when graphed, each datum would be closer to the equation’s line.

The average difference is very less of all the elements in a data set than the mean of the same data set.

What is the mean absolute deviation?

It is defined as the measure to show the variation in data set in other words between the mean and every data value the distance is known as the MAD.

As we know the mean absolute deviation is the average distance between each data point and the mean.

The mean (average) difference between each data value and the data set's mean is known as the mean absolute deviation. It can be used to quantify the data set's dispersion as well as to solve statistical issues in the actual world.

If the mean absolute deviation is close to 0 it means the average difference is very less of all the elements in a data set from the mean of the same data set

Thus, the average difference is very less of all the elements in a data set than the mean of the same data set.

Learn more about the mean absolute deviation here:

brainly.com/question/10528201

Please help with this! 50+ Points!

Answers

Answer:

The correct answer is C - 7.8 < 7 5/6 < 7.9

Step-by-step explanation:

First, convert 7 5/6 to decimal form --> 7.83.

If you don't know how to convert, think about what 5/6 is equal to and put it in decimal form. Add your decimal to the whole number, and there is your answer.

7.83 is in between 7.8 and 7.9, so it must be the answer.

I hope this helps!

Answer:

The correct answer is C - 7.8 < 7 5/6 < 7.9

Step-by-step explanation:

First, convert 7 5/6 to decimal form --> 7.83.

If you don't know how to convert, think about what 5/6 is equal to and put it in decimal form. Add your decimal to the whole number, and there is your answer.

7.83 is in between 7.8 and 7.9, so it must be the answer.

I hope this helps!

PLS HELP NO LINKS AND CAN YOU PLS PUT AN EXPLANATION

Answers

Answer:

I believe it is 562 because if you subtract the cell phone bill balance from the cash balance you get $749-$187=$562

Step-by-step explanation:

im not sure this is 100% correct

Which proportional relationship has the greatest rate of change?

Answers

Answer:

Maybe C because 0 is equal to 0 and 2 is equal to 8 so they are multiplying each number by 4

It’s D i believe D is going up and it’s not constant.

Only answer if you know the correct answer! Thanks! :)

Answers

Answer:

1. A

2. C

3. D

4. B

What’s the question??

Mr. Jones sold two pipes at $1.20 each. Based on the cost, his profit was 20% and his loss on the other was 20%. On the sale of the pipes, he:

(a) broke even, (b) lost 4 cents, (c) gained 4 cents, (d) lost 10 cents, (e) gained 10 cents

Answers

Answer:

Selling price of the first pipe = $1.20

Profit = 20%

Let’s try to find the cost price of the first pipe

CP = Selling price - Profit

CP = 1.20 - 20% of CP

CP = 1.20 - 0.20CP

CP + 0.20CP = 1.20

1.20CP = 1.20

CP = 1.201.20

CP = $ 1

Selling price of the Second pipe = $1.20

Loss = 20%

Let’s try to find the cost price of the second pipe

CP = Selling price + Loss

CP = 1.20 + 20% of CP

CP = 1.20 + 0.20CP

CP - 0.20CP = 1.20

0.80CP = 1.20

CP = 1.200.80

CP = $1.50

Therefore, total cost price of the two pipes = $1.00 + $1.50 = $2.50

And total selling price of the two pipes = $1.20 + $1.20 = $2.40

Loss = $2.50 – $2.40 = $0.10

Therefore, Mr. Jones loss 10 cents.

i know that this is hard to understand so tell me if you need help

Have a great day :)

Answer:

(d) lost 10 cents

Step-by-step explanation:

help me ;v; and thank you sm!

Answers

27 Cm² (C)

...............

Answer:  Choice C.   27 cm^2

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

Explanation:

It's not directly stated, but I'm assuming that there's symmetry going on in terms of the triangle on the left being a mirror copy of the triangle on the right. If that assumption is true, then we have another "3 cm" along the bottom edge. In total, the bottom edge is 3+6+3 = 12 cm long.

The top edge, parallel to the bottom one, is 6 cm. We'll denote the two parallel sides to be the base lengths and we could write [tex]b_1 = 6 \text{ and } b_2 = 12[/tex]. The small subscript just helps us differentiate between the two base lengths.

The height is the vertical dashed line of 3 cm. This means h = 3. The height is always perpendicular to the base.

We'll plug those three variables into the area of a trapezoid formula below

[tex]A = \frac{h*(b_1+b_2)}{2}\\\\A = \frac{3*(6+12)}{2}\\\\A = \frac{3*(18)}{2}\\\\A = \frac{54}{2}\\\\A = 27\\\\[/tex]

The area is 27 square cm

-----------------------------------

Another way to get the answer is to break the trapezoid into three pieces: two triangles and a rectangle in between.

One triangle has an area of base*height/2 = 3*3/2 = 9/2 = 4.5 square cm, which means two triangles combine to an area of 2*4.5 = 9 square cm.

The rectangle has area of length*width = 6*3 = 18 cm^2

The trapezoid's area is the combination of what we found: 9+18 = 27 cm^2

Leon pays $12.50 per month for a music subscription service.
One month he also buys 6 songs from the service. Each song
costs the same. His bill for that month is $17.84. In dollars, how
much does he pay for each song?

Answers

Answer:

$0.89

Step-by-step explanation:

17.84 - 12.50 = 5.34

5.34/6 = 0.89

In the picture. Plz help

Answers

Answer:

The answer is b) -3, -25

Step-by-step explanation:

A vertex on a graph is the trough of the deepest point.

How do I divide whole numbers by fraction? (Ex: 12 ÷ 1⁄2)

Answers

That would be 6 just put the the whole number over one and keep flip change
It would be 1/24 because you turn the 12 into 12/1 then flip it to be 1/12 the multiply the 1/12 by the 1/2

Please awnser 4,5,8 its math btw

Answers

8. Determine the ratio just be dividing 4/3 and then times that by the amount of apples you have 15*1.3 = 20 bananas. Another way to think of it for every 3 apples you have one extra banana so when you have 15 apples you would have 5 extra bananas
4. the amount of O+ donors to the amount of O- donors.
5. the amount of B+ donors to the amount of A- donors. :))

What are numbers that cannot be divided by 5 without a remainder?

Answers

105, 275, 315, 420, 945, 760

Hope this works

105,275,315,420,945,760

A credit card company charges 17% interest on any charges not paid at the end of the month. In February, $14.45 was paid in interest. How much of the charges were not paid at the end of the month? A. $31.45 B. $245.65 C. $69 D. $85

Answers

Answer:

D

Step-by-step explanation:

it’s $85, option D.

9=3(1/2 + k)

pls help! i will give brainly

Answers

Answer:

k= 11/2

Step-by-step explanation:

Answer:

k = 2.5

Step-by-step explanation:

In order to solve this equation we do the following:

[tex]9 = 3(\frac{1}{2} + k)\\[/tex]

Divide both sides by 3 and get...

[tex]3 = \frac{1}{2} + k\\[/tex]

Subtract 1/2 from both sides and get...

k = 2.5

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.


Use familiar figures to find the area of the figure shown. Show all work.

Answers

What he said ^^^^ that should be the right answer

Help..? As soon as possible please tysm :>

Answers

Answer:

A. The constant ratio of y/x is 12/5

Step-by-step explanation:

The ratio of y to x is constant which is 12/5. Hence option A is the correct option.

What is a constant?

The term "constant" has several meanings in mathematics. When used as a noun, it can have any of the following two meanings:  a constant, clearly defined number or another immutable mathematical object.

Given table is

x                 y

5/6             2

25/6          10

125/6        50

625/6      250

When x = 5/6 and y = 2:

x/y = (5/6)/2 = 5/12

∴y/x = 5/12

When x = 25/6 and y = 10:

x/y = (25/6)/10 = 25/60 = 5/12

∴y/x = 5/12

When x = 125/6 and y = 50:

x/y = (125/6)/50 = 125/300 = 5/12

∴y/x = 5/12

When x = 625/6 and y = 250:

x/y = (625/6)/250 = 625/1800 = 5/12

∴y/x = 5/12

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Describe the relationship between a and b that will make value of the expression 7 x a/b to 7

Answers

a and b should be equal or the same digit. for example 5x2/5+5 or 2/2, because that equals 1. 7x1 is 7, therefore, a and b should be equal/same

16. The graph shows the relationship between the
cost of renting a bounce house and the number
of hours for the rental
200
180
160
140
Total Cost ($)
120
100
80
60
40
20
1 2 3
4 5 6
7 8 9 10
Hours
Which function best represents the relationship
shown?
A. y = 2x + 1
B. y = 20x + 2
C. y = 40x + 20
D. y = 20x + 40

Answers

$680 is the answer...........
680........,,.,,,,....,..,.

Hi come get the points and brainliest Theawm

Answers

my second account Theawp lol

Answer:

ok

Step-by-step explanation:

please show on a graph so i can understand pleaseeeee

Answers

Answer:

Step-by-step explanation:

then you find the lcm of 7, multiple by 6^999 and divide by 4. Take your remainder and multiply by 3/4, then take your product and take it to the 6th power.

That is a graph what you show in question what do you need

4 [ 4 . 5 - 2 ( 1 . 2 ) ]
sorry i don't like to do my work

Answers

Answer:

112

Step-by-step explanation:

4 [ 4 . 5 - 2 ( 1 . 2 ) ]

4[4x5-2x-4}

4[20+8]

4[28]

112

Solve for x.



−2/3(3x−4)+3x=5/6




x=−19/6 ​

x=−11/6 ​ ​

x=21/6 ​

x=29/6

Answers

Answer:

X = 11/6

Step-by-step explanation:

Answer:

b) x = -11/6

Step-by-step explanation:

Given equation,

→ (-2/3)(3x - 4) + 3x = 5/6

Now the value of x will be,

→ (-2/3)(3x - 4) + 3x = 5/6

→ (-6x + 8)/3 + 3x = 5/6

→ (-6x + 8 + 9x)/3 = 5/6

→ -6x + 8 + 9x = (5/6) × 3

→ 3x + 8 = 5/2

→ 3x = (5/2) - 8

→ x = (-11/2) × (1/3)

→ [ x = -11/6 ]

Hence, value of x is -11/6.

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