Mathematics High School

bob is twice as old as ralph. three years ago the sum of their ages was 45. what are their ages now?

answer using a let statement

Answers

Answer 1

Answer:

Were they both 45? I'm kinda confused on that part, but I think Ralph would be 48 and Bob would be 50

Step-by-step explanation:

Answer 2

Answer:

34 and 17

Step-by-step explanation:

Bob = B

Ralph = R

B=2R

B-3+R-3=45

B+R-6=45

+6         +6

B+R=51

Substitute B for 2R

2R+R=51

3R=51

R=17

2(17)=34

so B is 34 and R is 17

Related Questions

There are eight girls and four boys what is the probability of selecting a boy

Answers

Answer:OK

Step-by-step explanation:

geometry help can someone please explain

Answers

answer is 24, the hypotenuse is twice the size of the shortest leg

Complete the pairs of corresponding parts if △RST ≅ △TXY.



∠STR =
∠ XYT
∠ TXY
∠ XTY

Answers

Answer:

∠STR is associated with ∠ XYT

Therefore, we conclude that:

∠STR = ∠ XYT

Step-by-step explanation:

Given

△RST ≅ △TXY

To determine:

∠STR = ?

As

△RST ≅ △TXY

So the triangles △RST and △TXY are congruent to each other.

We know that congruent triangles have equal corresponding parts.

Please check the attached graph.

From the graph, it is clear that:

∠STR is associated with ∠ XYT

so

∠STR = ∠ XYT

Therefore, we conclude that:

∠STR = ∠ XYT

Sandy has 31 books in her library. She bought several books at a yard sale over the weekend. She now has 59 books in her library. How many books did she buy at the yard sale

Answers

28 books. 59(current books) - 31(past books) equals the amount of books Sandy bought, which is 28 books. Hope it helped

Use the given formula to calculate the probability
You are rolling a 6-sided number cube with the
numbers 1 through 6. Which of the following represents
the probability of rolling an even number?
Probability =
Number of desired outcomes
Total number of outcomes
0
1/6
0 1/2
0 1
Intro
Done
6 of 13​

Answers

Answer:

C 1/2

Step-by-step explanation:

i took test on edge

Answer:

C 1/2

Step-by-step explanation:

A stack of books is 5 feet 5 inches high. How high is it in inches?

Answers

Well first, you have to know that there are 12 inches in a foot so, that's 12 / 3 = 4, so that means that for every foot, there are 4 books. The books are 5 feet tall so 4 x 5 = 20. Your answer is: 20 books are in a stack.

Answer:

Step-by-step explanation: I would do 5x12 because there are 12 inches in one foot so 5x12 is 60 so there is 60 inches

Jackie's mother is 28 years old, which is four times Jackie's age minus eight years

Answers

Answer:

shes 5

Step-by-step explanation:

Answer:

6

Step-by-step explanation:

Lionel is buying a computer that normally sells for 890 the state sales tax rate is 6 percent what is the total cost of the computer including sales tax

Answers

Answer:

100 + 6 = 106%

890/100 X 106 = 943.4

total cost 943.40

Someone help me please :)

Answers

Answer:

A={5,1,-7}

Step-by-step explanation:

domain = x

choose domain {-2,0,4} to 2x+y=1

range = y

range is

2(-2)+y =1 ,y =5

2(0)+y=1, y= 1

2(4)+ y=1, y=-7

range = {5,1,-7}

Your answer should be {5,1,-7}

please help!
what is 2/7 x 1/3

Answers

Answer:2/21

Step-by-step explanation:

2 x 1      2

——-   =. -

7 x 3.    21

7x + 4(x+5)
I will give brainliest to first person who answers!!!!!!!!!

Answers

Answer:

Its 11x + 20 !!

Step-by-step explanation: :)


A house with an initial value of $125,000 increases at a rate of 4% per year. Approximately
how many years will it take for the value of the house to reach $225,000?

Answers

Answer: deeznuts

Step-by-step explanation:

6raq stand up 65 taking over on my kids

1/2+3/8=
.............………

Answers

Answer:

its 7/8

Step-by-step explanation:

Answer:

7/8

Step-by-step explanation:

Sally has a discount card that reduces the price of her grocery bill in a certain grocery store by 5%. If c represents the cost of Sally’s groceries, which expression represents Sally’s grocery bill?

Answers

The original price is c. Then the grocery bill will be: c - 0.05c = 0.95 c. You can also say since the beggining that 5% disscount implies 0.95 factor, which leads to c * 0.95 = 0.95c. Sorry if it’s wrong

Amanda buys 4 tickets to the baseball game for $24 each. Which equation

shows the closest estimate of the total amount Amanda spends?

Which equation shows the closest estimate of the total amount Amanda spends

Answers

Answer:

$96

Step-by-step explanation:

Given that,

The total number of tickets = 4

Cost of each baseball = $24

We need to find the equation that shows the closest estimate of the total amount Amanda spends.

Total cost = No. of tickets × Cost of each baseball

= 4×24

= $96

Hence, the total cost is $96.

What is the scientific notation for (9x10^-3)2

Answers

Answer:

174 I'm pretty sure

Step-by-step explanation:

multiply 9 x10 = 90

subtract 90 - 3=87

multiply 87×2

Answer:81*10^-6 which becomes 8.1*10^-5

? maybe

Step-by-step explanation:

(REPOST)
Amaia walks from her home to the bank, then to the park, and then to get groceries before heading home. The path she travels is in the shape of a parallelogram and is shown in the diagram below. How many total meters did Amaia walk?

15 points to whoever answers correctly and brainliest!

Help! I need some explanation here!

Answers

Answer:

So its is pretty straight forward (answer at the bottom)

First of all 2 sides of a parrleogram are the dame and the other 2 are different from the first but the opposites are the same

So lets start with The distance from home to bank

x+9 is the distance since its the opposite

Now the other side is 2x+1

The third side is x+9

the fourth side is x+5, it is different from 2x+1 but its just written differently.

Now add them all up

2x+1+x+9+x+5+x+9=

5x+24

So the amount fo meters are 5x+24

The distance covered by Amaia is 5x+24 meters.

What is a parallelogram?

A parallelogram is a simple quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure.

Given that, Amaia walks out and covers a distance in a shape of parallelogram,

Therefore, the opposite sides will be equal,

To find the distance covered we will find the perimeter of the parallelogrammical way,

P = x+9+x+9+x+5+2x+1

P = 5x+24

Hence, the distance covered by Amaia is 5x+24 meters.

Learn more about parallelogram, click;

https://brainly.com/question/29147156

#SPJ3

What fraction of an hour is 22 minutes

Answers

Answer:

60 min in an hour

22/60-simplify

11/30 is the answer

1 hour = 60 minutes

=> 22/60

=> 11/30 minutes

What is the answer to 6x-7=4x5

Answers

Answer:

x=6

Step-by-step explanation:

6x-7=4x+5

-4x. -4x

2x-7=5

+7. +7

2x=12

×=6

Marshall had d dogs that he put into 4 different areas.

Answers

Divide d by 4 to Get the answer

What is the greatest common factor of 3x^4, 15x^3", and 21x^2??


Answers

Answer:3x^2 each coefficient is divisible by 3 and and you can take x^2 from both of them

The soccer team is planning to sell health bars for a fundraiser. The prices of purchasing health bars from two different companies are represented by the system of equations shown, where x is the number of bars purchased and y is the total cost in dollars. Company A: y=0.75x Company B: y=10+0.50x How many bars would the team need to purchase from each company in order for the total cost to be equal?

Answers

Answer:

40 bars

Step-by-step explanation:

Where x = Number of bars purchased by each team

We solve this question by equating both Equations from Company A to Company B

Company A = Company B

0.75x = 10 + 0.50x

Collect like terms

0.75x - 0.50x = 10

0.25x = 10

x = 10/0.25

x = 40 bars

Hence, each team need to purchase 40 bars from each company

Answer:

Step-by-step explanation:

40

11 = 7 + 4x is what is what is what

Answers

Answer:

x = 1

Step-by-step explanation:

11 = 7 + 4x

Subtract 7 from both sides

11-7 = 7-7 + 4x

4 = 4x

Divide 4 from both sides

4/4 = 4x/4

1 = x

x = 1

Check:

11 = 7 +4(1)

11 = 7+4

11 = 11

Hope this helps. Have a nice day.

Find the nth term of -5,-2,3,10,19

Answers

Answer:

PLace them one by one from big number to small and the middle number is the answer.

Step-by-step explanation:

What is the answer to the problem 50 Х200=

Answers

Answer:

10000

Step-by-step explanation:

50 times 200

5 times 2 is 10

add three zeros: 10000

is 0.53 greater than 0.35

Answers

Yesssss lolllllllll......

Answer:

Yes.

Pls mark brainliest. Thanks.

2(13+x) less than or equal to 16

Answers

Answer:

Step-by-step explanation:

here you go mate

step 1

2(13+x)≤ 16

step 2

2(13+x)≤ 16  simplify

2x≤-10

step 3

[tex]\frac{2x}{2}\leq \frac{-10}{2}[/tex]  Divide both sides by (2)

answer

x≤-5

mind if i get brainliest?

answer pls asap for top and bottom​

Answers

Answer: -1/4

Step-by-step explanation:

Answer:

slope i.e. m is equal to 3/5

Step-by-step explanation:

Use equation y = mx+c where m is slope and c is y intercept i.e. the line of the equation intersect the y axis at a point from the origin . Y intercept can be on +ve y axis and -ve y axis . Here, in your question c is zero as we see and m is 3/5 as we see .

Thanks .

I hope it will help you.

Seema is travelling to Kenya. She travels a distance of 8,300 km by plane to Lagos and then another 5,500 km to Nairobi. Both planes fly at an average speed of 1,200 kmh-1. What is her total flight time in hours and minutes, to the nearest minute?

Answers

Answer: 11 hours 30 minutes

Step-by-step explanation:

Total flight distance:

= 8,300 + 5,500

= 13,800 km

Flight time = Distance / Speed

= 13,800 / 1,200

= 11.5 hours

= 11 hours 30 minutes

help asp! i will give branilest i think thats how you spell it
which of the following demonstrates the Distributive Property?

Answers

The answer is D! 4(2a + 3) = 8a + 12
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