A man is 23 years old. His sister is 11 years old. How many years ago was the man 3 times older than
his sister ?

Answers

Answer 1
23 11
20 8
18 6

Five years ago

Related Questions

write a Pythagorean triplet with the following numbers as one of the number
a,4 b,8 c,12 d,22 with the formula pls

class 8​

Answers

Answer:

For any natural number m, we know that

2m, \mathrm{m}^{2}-1, \mathrm{m}^{2}+1m

2

−1,m

2

+1 is a Pythagorean triplet.

i. 2m = 6

\begin{array}{l} \Rightarrow \mathrm{m}=\frac{6}{2}=3 \\ \mathrm{m}^{2}-1=3^{2}-1=9-1=8 \\ \mathrm{m}^{2}+1=3^{2}+1=9+1=10 \end{array}

⇒m=

2

6

=3

m

2

−1=3

2

−1=9−1=8

m

2

+1=3

2

+1=9+1=10

∴ (6, 8, 10) is a Pythagorean triplet.

ii. 2m = 14

\begin{array}{l} \Rightarrow \mathrm{m}=\frac{14}{2}=7 \\ \mathrm{m}^{2}-1=7^{2}-1=49-1=48 \\ \mathrm{m}^{2}+1=7^{2}+1=49+1=50 \end{array}

⇒m=

2

14

=7

m

2

−1=7

2

−1=49−1=48

m

2

+1=7

2

+1=49+1=50

∴ (14, 48, 50) is not a Pythagorean triplet.

iii. 2m = 16

\begin{array}{l} \Rightarrow \mathrm{m}=\frac{16}{2}=8 \\ \mathrm{m}^{2}-1=8^{2}-1=64-1=63 \\ \mathrm{m}^{2}+1=8^{2}+1=64+1=65 \end{array}

⇒m=

2

16

=8

m

2

−1=8

2

−1=64−1=63

m

2

+1=8

2

+1=64+1=65

∴ (16, 63, 65) is a Pythagorean triplet.

iv. 2m = 18

\begin{array}{l} \Rightarrow \mathrm{m}=\frac{18}{2}=9 \\ \mathrm{m}^{2-1}=9^{2}-1=81-1=80 \\ \mathrm{m}^{2}+1=9^{2}+1=81+1=82 \end{array}

⇒m=

2

18

=9

m

2−1

=9

2

−1=81−1=80

m

2

+1=9

2

+1=81+1=82

∴ (18, 80, 82) is a Pythagorean triplet

Step-by-step explanation:

For any natural number greater than 1,(2m,m

2

−1,m

2

+1) is Pythagorean triplets.

So, if one number is 2m, then another two numbers will be m

2

−1 and m

2

+1.

Given, one number = 4

Then Pythagorean triplets:

2m=4 or m = 2

So,

m

2

−1=(2)

2

−1=4−1=3

m

2

+1=(2)

2

+1=4+1=5

Now, (3)

2

+(4)

2

=(5)

2

Or 9 + 16 = 25.

I hope you all like this answer.

Mark as a brainlist.

rate my answer guys ❤️

Mr. Nasser asks four of his students to measure four different objects. Here are the results.

Which student had the greatest percent error?

Answers

Step-by-step explanation:

Answer:

Emiko has the greatest percent error

Step-by-step explanation:

PLEASE HELP ITS MATH THANK YOUUUU

Answers

Answer:

144%

Step-by-step explanation:

There are multiple ways to do this but here's the way I used:

2.50/100 = .025

Based on this, 1% of 2.50 is 0.025.

6.10-2.50 = 3.6

3.6/0.025 = 144

Based on this, 3.4 is 144 times greater than 0.025 (1%). So 3.4 is a 144% increase.

Heyyyyyyyyyyyy can you help

Answers

Answer:

1.45 x 10   {2}

Step-by-step explanation:








What is the value of the expression 30-(-6)?
-180
-5
Ο Ο Ο Ο
5
24

Answers

Answer:30-(-6) is the same as 30+6. 36 is the value of the expression 30-(-6). If it were written:

30x(-6) = -180

30-6 = 24

But 30-(-6) = 36

Step-by-step explanation:

ANSWER FAST PLEASE identifying difrent slopes consider the line that passes through each pair of given points and decide what type of slope the line was

Answers

Answer:

(2/4) and (5,1) negative slope

(-7,8)and(-7,0) undefined slope

(3,5) and (-1,2) positive slope

(6,-3) and (-4,-3) zero slope

Step-by-step explanation:

took the assignment a while back <3 not sure if those are the ones that were provided in ur edge tho because there was no picture provided on this question

187²–87² without using mathematical table or calculator

Answers

27.400

Step-by-step explanation:

187X187 = 34.969

87X87=7.569

34.969 - 7569 = 27.400

Use the identity

(a + b)² = a ² + 2ab + b ²

Then rewrite 187² as

187² = (100 + 87)² = 100² + 2•100•87 + 87²

Subtract 87² eliminates the last term from above, so we're left with

(100² + 2•100•87 + 87²) - 87²

= 100² + 2•100•87

= 10000 + 2•8700

= 10000 + 17400

= 27400

What’s the equation of the horizontal asymptote

Answers

By inspection, the equation for the horizontal asymptote is y = -3.

what is the value of x when y is 31

Answers

Answer:

16

Step-by-step explanation:

Answer:

16

Step-by-step explanation:

Direct variation

y = kx

16 = k*8

Divide each side by 8

16/8 = 8k/8

2 = k

The equation is y =2x

y =2x

Let y =32

32 = 2x

Divide by 2

32/2 = x

16 =x

what is the product of 1/2 and 3/5 ?

Answers

Answer:

3/10

I think??

Answer:

The answer is 0.3

don't really have a step-by-step explanation just either look it up or do it on a calculator

If 200 kids went to the zoo and only 10 came back how many got lost?

Answers

Answer:

200- 10 = 190

so, 190 kids came back..

Step-by-step explanation:

brainliest plz

Answer: 190

Step-by-step explanation:

200-10=190 right? brainiest please

Find the missing angle measure
S=
Z=
(Please help I will give you brainliest!)

Answers

Answer:

s=42 , z=34 ,x=55

Step-by-step explanation:

48+90+s=180 [Sum of angles of a triangle]

s=42

z+115+31=180 [Sum of angles of a triangle]

z=34

Number 5,

35+90+unknown angle=180 [Sum of angles of a triangle]

Unknown angle=55

x=Unknown angle [Vertically opposite angles]

x=55

b) Hannah buys 2 1/2 pounds of dried fruit for $1.50. How much is she paying for one pound of dried fruit?

Answers

Answer:

hannah is paying 60 cents per pound or dried fruit

Step-by-step explanation:

1.5÷2.5=0.6

The highest recorded temperature in Yuma, Arizona, was about 51 degrees C and the lowest recorded temperature was about 11 degrees C
Whats the difference between the highest and lowest temperatures?

Answers

Step-by-step explanation:

Definition of temperature:

The tendency of a substance or an object to transfer heat to its surroundings.

Definition of the thermodynamic temperature:

The Kelvin, unit of thermodynamic temperature, is the fraction 1/273.16 of the thermodynamic temperature of the triple point of water

Select the correct answer.
One of the factors of the polynomial x2 + 5x + 6x is (x2 + 3x). What is the other factor?
AX-2
B. X+ 2
C. X+ 1
D. X-1

Answers

Answer:

I think it is B it is my guss

What value of x is in the solution set of -5x-15x> 10+20x

Answers

I,save £82 each week. how many weeks will it take me to save £750

WILL GIVE BRAINLIEST!!!!!! ANSWER QUICK PLEASE!!!

Answers

Answer:c?

Step-by-step explanation: i think?

Length of rectangle is 4 m less than 3 times its breadth. If the perimeter of rectangle is 32 m. Find its length and breadth B=12​

Answers

Answer:

Length = 11m and the Breath = 4m

Step-by-step explanation:

L = 3B - 4

p = 32m

2( L + B ) = 32

L + B = 32/2

L + B = 16

(3B - 4) + B = 16

3B - 4 + B = 16

4B - 4 = 16

4B = 16 + 4

4B = 20

B = 20/4 = 5m

B = 5m

L = 3B - 4

L = 3(5) - 4

L = 15 - 4

L = 11m

please brainliest

inver laplace

[tex] {l}^{ - 1} ( \frac{s}{( {s}^{2} + 16)^{2} } ) [/tex]

Answers

Answer:

              s

_______________

ls^4 + 32ls^2 + 256l

Step-by-step explanation:

I used an algebra calculator called MathPapa to solve your equation.

Also, welcome to brainly!

A laptop has a listed price of $693.95 before tax. If the sales tax rate is 6.5%, find the total cost of the laptop with sales tax included. Round your answer to the nearest cent, as necessary.

Answers

Answer:

45.11

Step-by-step explanation:

693.95 x .065 = 45.11

solve pls brainliest

Answers

First is 3 second is 2.

What is the slope of the line that passes through the points 10, six and nine, five? Write your answer in simplest form

Answers

Answer:

y=x-4

Step-by-step explanation:

If you plug in the points into a graph, you can see that the slope is 1.

You can go down one and the left one, eventually you will find the y-intercept at (0,-4)

Bea has ¾ of a cake. If it will be divided equally among 4 persons, what part of the cake will each one gets?

Answers

Step-by-step explanation:

(3/4)÷4= 3/16

each will get 3/16 of the cake

If 25 metres of cloth costs Rs. 337. 50 , then the length of the cloth bought for Rs. 810 is​

Answers

Answer:

19

Step-by-step explanation:

because it not it

Answer:

See below:

Step-by-step explanation:

So first, we can find out the cost for one meter of cloth by dividing 25 by 337.5 Rupees:

[tex]\frac{337.50}{25} = 13.50[/tex]

We now divide 810 by 13.50

[tex]\frac{810}{13.50} = 60[/tex]

We now get our answer of 60 meters!

Cheers!

If this helped you a lot be sure to mark as brainliest!

I need to know what the exact and estimated sum is

Answers

Answer:

Exact: 55.899

Estimate: 56

Step-by-step explanation:

8.176 + 5.802 + 41.921 = 55.899

8.176 ~ 8

5.802 ~ 6

41.921 ~ 42

8 + 6 + 42 = 56

Dan received these tips in a given week. How much were his total tips.?

Answers

Answer:

we need the amount of tips to answer this ;-;

Step-by-step explanation:

If the radius of circle C is double the radius of circle D, what can you say is true to the area of circle C?​

Answers

Answer:quadrupled

Step-by-step explanation:

If the radius of a circle is doubled, the area of the circle will be quadrupled and the circumference will also be doubled. This makes sense because the area of a circle is directly proportional to the square of the radius of the circle (if the radius of a circle is increased x times, its area will be increased to x^2 times the original area), whereas the circumference is proportional to the size of the radius (if the radius of a circle is increased x times, its circumference will increase x times).

is it true that if one of the factors is 0, the product is 1?​

Answers

Answer:

The Principle of Zero Products states that if the product of two numbers is 0, then at least one of the factors is 0. (This is not really new.) If ab = 0, then either a = 0 or b = 0, or both a and b are 0.

hope it helped

Answer:

0

Step-by-step explanation:

second angle of a triangle is 10 degrees larger than the first angle. Third angle is 10 larger than second angle. Find the smallest angle of the triangle solution

Answers

Answer:

1/2 of an answer is zero

Step-by-step explanation:

The sum of a number (m) and 15 is 80. Which equation shows this relationship

Answers

Answer:

m+15=80

Step-by-step explanation:

A number plus 15 = 80

m + 15 =80

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