1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alla [95]
3 years ago
10

Silas had 3 times as much money as Raja. Silas spent $84 of his money to buy a birthday gift for his grandma while Raja was awar

ded $42 for winning a competition. In the end, they had the same amount of money. How much did they have altogether at first?
Mathematics
1 answer:
ella [17]3 years ago
4 0

Answer:

Total money they had at first $252.

Step-by-step explanation:

Let,

x be the amount Silas had originally

y be the amount Raja had originally

According to given statement;

x = 3y     Eqn 1

x - 84 = y + 42    Eqn 2

Putting x=3y in Eqn 2

3y - 84 = y + 42

3y - y = 42 + 84

2y = 126

Dividing both sides by 2

\frac{2y}{2}=\frac{126}{2}\\y=63

Putting y = 63 in Eqn 1

x = 3(63)

x = 189

Total money they originally had = 189 + 63 = $252

Hence,

Total money they had at first $252.

You might be interested in
What property is x+(3x+20)=180
Aleksandr [31]

The answer is the distributive property

6 0
3 years ago
Finding the sums
Sav [38]

The sum of the first 7 terms of the geometric series is 15.180

<h3>Sum of geometric series</h3>

The formula for calculating the sum of geometric series is expressed according to the formula. below;

GM = a(1-r^n)/1-r

where

r is the common ratio

n is the number of terms

a is the first term

Given the following parameters from the sequence

a = 1/36

r = -3

n = 7

Substitute

S = (1/36)(1-(-3)^7)/1+3
S = 1/36(1-2187)/4
S = 15.180

Hence the sum of the first 7 terms of the geometric series is 15.180

Learn more on sum of geometric series here: brainly.com/question/24221513

#SPJ1

7 0
1 year ago
A rug in the shape of a regular quadrilateral has a side length of 20 ft. What is the perimeter of the rug? a.4 b.5 c.40 d.80
AlexFokin [52]

Answer:C.40


Step-by-step explanation:


6 0
3 years ago
Triangle ABC has vertices at A(-3, 5), B(0, 0), and C(6, 5). It is transformed so that Triangle A'B'C' has coordinates A'(1, 11)
Alisiya [41]

Jacob is incorrect. The transformation was no a reflection, but a translation. The transation was (x+11,y+6)(11 units rigth and 6 units up). (Explain what the points would have been if it was a reflection across the x-axis)

5 0
3 years ago
Ned took a test with 20 questions. He lost 3 points for each of the 5 questions he got wrong and earned an additional 12 points
marusya05 [52]

Answer:

He lost 15 points and recieved 12 points back now he missing 3 points

8 0
3 years ago
Other questions:
  • It takes Kali 8 minutes to sweep a porche and it takes shawns 11 minutes to sweep the same porch how long would it take them if
    10·1 answer
  • At jacks laundromat, 6 of the washers must be replaced. These washers represent 1/4 of the total number of washers. If w represe
    6·2 answers
  • Find the product.<br><br> (n + 7)(n - 2)<br><br> n² - 5n - 14<br> n² + 5n - 14<br> n² - 5n + 14
    15·2 answers
  • Expand the following expression.
    5·1 answer
  • Evaluate. 2^−2⋅(12⋅3)−5^3 Enter your answer in the box.
    12·2 answers
  • A pencil has a density of 8.75g\ml. it has a mass of 3.5grams what is the volume?
    13·2 answers
  • 2) Gold has a density of
    13·1 answer
  • Multiply: <br><br> PLSSS HELLPPP
    8·1 answer
  • Ms. Lee is handing out wristbands as students enter the dance. There are 40 black, 20 yellow, 25 orange, and 15 purple wristband
    10·2 answers
  • According to the map which landform is the most important to the civilization shown
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!