Emma is 10 years old. she asked her father how old he is. her father answered, "when you are my age I will be 70." how old is Emma's father.

Answers

Answer 1

Answer:

40

Step-by-step explanation:

Emma age: yE = 10 + x   (x is timeline)

Father age: yF = A + x (x is timeline, A is Father age today)

in time x1: Emma will be A years old, and Father will be 70 years old.

yE (x1) = 10 + x1 = A

yF (x1) = A + x1 = 70

System of equations with unknown values: x1 and A.

substract equation 1 - equation 2:

10 - A = A - 70 ⇒ 80 = 2A ⇒ A = 40

So, father is 40 years old now

Answer 2

Emma's father is 40 years old

Let the age of Emma father be y

Age of emma = 10 years

In x years time;

Emma age will be 10 + xFathers age will be y + x

If in x1 years time, Emma will be y years old and his father will be 70 years old

Emma age: yE = 10 + x   (x is timeline)

Emma's current age will be 10 + x = yHis father;s current age will be y + x = 70

Solving both equations simultaneously;

10 - y = y - 70

10+70 = y + y

80 = 2y

2y = 80

y = 80/2

y = 40 years

Hence Emma's father is 40 years old

Learn more on simultaneous equations here: https://brainly.com/question/16863577


Related Questions

what is 5/5 because i get confuse

Answers

Answer:

5/5 is a whole also equal to 1

Step-by-step explanation:

What is 24 divided by 11

Answers

24 divided by 11 is 2.18, repeated!

In other words, 2.1818181818... et cetera!

Hope this helps!

Answer:

2.18 (the .18 repeating)

Step-by-step explanation:

Evaluate the expression 3c +7d when c = 3 and d =2

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The answer to this is 23
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When a variable is directly next to a number, that means multiplication. Using simple order of operations, 3 x 3 = 9 and 7 x 2 = 14, your answer is 23.

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Answer:

no

the point (4,3) is not within the shaded region

If each of the numbers in the following data set were multiplied by 18, what would be the new median of the data set? 14, 20, 18, 58, 71,36, 28
A. 360
B. 504
C. 648
D. 324​

Answers

Answer:

Step-by-step explanation:

Arange the numbers in ascending order

14,18,20,28,36,58,71

You will see that the median of these data set is 28. So when you multiple it by 18, the answer will be 504.

Therefore, the answer is B. 504

what is the measure of b?

Answers

Answer:

mesure of b is what hahhahaha

I need help with that​

Answers

9514 1404 393

Answer:

  AC ≈ 7.3

Step-by-step explanation:

Corresponding sides of similar triangles are proportional.

  AC/BC = DF/EF

  AC/18 = 15/37 . . . . fill in the given values

  AC = 18(15/37) . . .  multiply by 18

  AC ≈ 7.3

I just need to know what to do when I have this
-4ac
and I know what a and c are

Answers

Answer:

you have to multiply them

-4×a×c

also they're called unknown numbers

Find the measure of the third angle of a triangle given the measure of two angles are 63° and 22°

°85
°41
°5
°95​

Answers

Answer:

The answer would be 95

Step-by-step explanation:

180=63+22+x

x=180-63-22

x=95°

write an addition or subtraction problem that is modeled by the number line below

Answers

-2 + 2

If you need an answer too. The answer is 0.

whats the answer to -4-x+5x-3

Answers

Answer:

4x-7

Step-by-step explanation:

If f(x)=5x-1, then f^1(x)=

Answers

Answer:

(y+1)/5

Step-by-step explanation:

you meant f^-1(x) ?

let y= 5x-1

Make x subject of formula

y+1=5x

x=(y+1)/5

f^-1(x)=(x+1)/5 replace y by x

Consider the function f(x) = v5x – 5+1
Which inequality is used to find the domain?

Answers

Answer:

D second one D and C

Step-by-step explanation:

edg2020

Answer:

D.

Step-by-step explanation:

edge… you’re welcome!

QUICK PLEASE ILL MARK BRAINLIEST (PRETEST: FUNCTIONS - PLATO EDMENTUM)

Answers

Answer:

y=5-05x is with (2,4),(4,3)

y=7-1x is with (2,5),(5,2)

y=-5+2x is with (4,3),(6,7)

y=4+3x is with (2,10) and (5,19)

Answer:

y=5-05x is with (2,4),(4,3)

y=7-1x is with (2,5),(5,2)

y=-5+2x is with (4,3),(6,7)

y=4+3x is with (2,10) and (5,19)

Step-by-step explanation:

Use the distance formula, to calculate the ratio of a side length on DEF to the corresponding side length on ABC . Show your work. Then confirm your calculations using GeoGebra tools.

Answers

Answer: 1.5

Step-by-step explanation:

DE=√(8-5)^2+(-0.5-1)^2 =√11.25≈3.35

AB=√(2-1)^2+(3-1)^2 =√5≈2.24

DE:AB ≈ 3.35 : 2.24 ≈ 1.5

2. Find the x and y
intercepts:
y = 1/2x+4

Answers

Answer:

y intercept = 4

x intercept = -8

Step-by-step explanation:

0 = x/2 + 4

-4 = x/2

-8 = x

y=mx+b

y = 1/2x+4

Y intercept = b, b= 4

pic2 Readiness Assessment
00:00
Which two ratios are equivalent to 10 - 12?
A 11:13 and 20:24
o
B. 10:12 and 11 : 13
C. 5:6 and 20:24
D. 5:6 and 11 : 13

Answers

The answer is C- 5:6 and 20:24.


10-12 is equal to 5:6 and 20:24 by dividing and multiplying by 2:

10 divided by 2 is 5 and 12 divided by 2 is 6.

10 times 2 is 20 and 12 times 2 is 24.

What is the missing angle?

I have the answer I just need
to show the work. pls help ;-;

The answer is 55

Answers

The answer is 55
Ghjol
The inside angles of a triangle = 180
So 75+50=125
180-125=55

I need help nowwwww, like today.
What is the slope of the line on the graph?

Answers

Answer:

i forgot im not smart

Step-by-step explanation:

Decide whether each sentence uses descriptive language or not. Jasmine saw a frog in the road. She suspiciously eyed the fluffy white poodle that was decorated with fluorescent pink bows. The sky was a dull and murky gray. The boy watched his brother play on the swing set.

Answers

Answer:

Decide whether each sentence uses descriptive language or not.

Jasmine saw a frog in the road.

✔ not descriptive

She suspiciously eyed the fluffy white poodle that was decorated with fluorescent pink bows.

✔ descriptive

The sky was a dull and murky gray.

✔ descriptive

The boy watched his brother play on the swing set.

✔ not descriptive

Step-by-step explanation:

Jasmine saw a frog in the road is a non-descriptive sentence.

What is a sentence?

A sentence can be defined as the part where the phrase and the words are. This often contains a subject and a predicate. For a sentence, it needs to be grammatically correct. Also, there should be proper punctuation marks that are needed in a sentence. It can contain a noun or a pronoun. The sentence helps in communicating the thoughts.

The descriptive and nondescriptive sentences are given below:

Jasmine saw a frog in the road is a non-descriptive sentence. She suspiciously eyed the fluffy white poodle that was decorated with fluorescent pink bows is a descriptive sentence. The sky was dull and murky gray is a descriptive sentence. The boy watched his brother play on the swing set is a non-descriptive sentence.

Learn more about sentence, Here:

https://brainly.com/question/27891489

#SPJ2

Given f(x) = 7(2 - x), what is the value of f(-8)?

Answers

The answer is f(-8)=70 because (2-(-8) is 10 because you add when it’s - - (minus a negative) and then 7x10=70

A gallon of paint is used to paint a room. One third of the paint is used on the first day. On the second day, one third of the remaining paint is used. What fraction of the original amount of paint is available to use on the third day? Please help!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

On the third day u can use 1/3 also.

Step-by-step explanation:

1/3 x 3 = 3/3 or 1.

the distance between happyland and giggleville is 60 miles. How many kilometers is this?

Answers

Answer:

96.56 kilometers

Step-by-step explanation:

Answer:

the distance between happyland and giggleville is 96.54 km

a carpenter has three sheets of plywood that are each 6.85 feet long. a 3.4-foot piece is cut from one sheet 0.5-foot piece is cut from another piece. How many feet in plywood is left in all

Answers

Answer:

16.65 feet

Step-by-step explanation:

Okay, we have three boards that are each 6.85 feet long. If we cut 3.4 feet off one board, that board has:

6.85

3.4

=

3.45

feet left

If we cut off 0.5 feet off another board, that board has:

6.85

0.5

=

6.35

feet left

So, if we take our three new boards, the total length of plywood left is:

6.85

+

3.45

+

6.35

=

16.65

feet

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What is the measure of angle DFE?

29°
32°
58°
64°

Answers

Answer:

The answer is 64 degrees

Step-by-step explanation:

D on edg

Answer:

D- 64 degrees

Step-by-step explanation:

Let P= {8, 9, 10, 11, 12), Q = {9, 10, 11), and R = {5, 6}.
Find P∪O.​

Answers

PUQ= {8,9,10,11,12} is the answer

Write each number in scientific notation

1) 0.524
2) 0.0000901
3) 0.00000707

Answers

Answer:

1) 5.24x10^-1

2)9.01x10^-5

3) 7.07x10^-6

Step-by-step explanation:

1) Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the  10 . If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

2) Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the  10 . If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

3) Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the  10 . If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

Use the properties of logarithms to expand each logarithmic expression as much as possible. Where possible, evaluate logarithmic expressions without using a calculator.​

Answers

Answer:

1/5log2(x)+4/5log2(y)-4/5

Step-by-step explanation:

=log2{(xy^4/16)}^1/5

=1/5×log2(xy^4/16)

=1/5×{log2(xy^4)-log2(16)}

=1/5×{log2(x)+log2(y^4)-log2(2^4)}

=1/5×{log2(x)+log2(y^4)-4)} ( as loga(a^x)=x)

=1/5×log2(x)+1/5log2(y^4)-4×1/5 (distribute 1/5 through the parentheses)

=1/5×log2(x)+1/5×4log2(y)-4/5

=1/5log2(x)+4/5log2(y)-4/5

yo lets play among us!!

Answers

Answer:

yass dude lets go

Answer:

Yo, thats one of my fav games...

ur sus

LOL

Need help on homework​

Answers

Answer: z= 36 and 2/3

Step-by-step explanation:

1) [tex]\frac{z}{5} -4= 3\frac{1}{3}[/tex]

2) Add 4 to both sides to get [tex]\frac{z}{5} =7 \frac{1}{3}[/tex]

3) Multiply both sides by 5 to get [tex]z= 36 \frac{2}{3}[/tex]

Answer:

z=110/3

Step-by-step explanation:

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