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
Lelechka [254]
3 years ago
11

PLEASE HELP ILL GIVE BRANLIEST!!! ( and 50 points! )

Mathematics
1 answer:
Rama09 [41]3 years ago
8 0

Answer:

As we know:

A nickle is worth 5 cents.

A dime is worth 10 cents.

A quarter is worth 25 cents.

Here is what Robert had:

Number of nickles (a)

Number of dimes (b)

Number of quarters (c)

Here is assumption:

5a + 10b + 25c = 850

a = 3b

c = b + 10

=> 5(3b) + 10b + 25(b + 10) = 850

=> 50b + 250 = 850

=> 50b = 600

=> b = 600/50 = 12

=> a = 3b = 3 x 12 = 36

=> c = b + 10 = 12 + 10 = 22

=> Number of nickles: 36

=> Number of dimes: 12

=> Number of quarters: 22

Hope this helps!

:)

You might be interested in
Mary sold 147 bags of popcorn in 3 days. At this rate, how many bags of popcorn will Mary sell in 5 1/2 days?
lord [1]

Answer:

147bags=3days

?bags=5 1/2days

<u>147</u><u>×</u><u>11</u><u>/</u><u>2</u>

3

<u>1617</u><u>÷</u><u>3</u>

2

<u>1617</u><u>×</u><u>1</u>

2 3

=539/2

=269 1/2 bags or 269.5bags

5 0
2 years ago
Lonna uses 8.2 pints of blue paint and white paint to paint her bedroom walls. 2 5 of this amount is blue paint, and the rest is
vova2212 [387]

Answer:

the number of pints of blue paint did she use for painting her bedroom walls is 1.875 pints

Step-by-step explanation:

The computation of the number of pints of blue paint did she use for painting her bedroom walls is shown below:

= Total pint × blue paint

= 7.5 × (1 - 3 ÷ 4)

= 7.5 ×  1 ÷ 4

= 1.875 pints

Hence, the number of pints of blue paint did she use for painting her bedroom walls is 1.875 pints

5 0
3 years ago
A swim team is divided into age groups: Guppies, stingrays, and sharks. There are 20 swimmers in the Stingray group. If we rando
ivanzaharov [21]

If you choose 10 swimmers and 4 are Stingrays, you can say that Stingrays make up roughly 40% of the swimmers. If 20 Stingrays make up 40% of all the swimmers, we just have to find what number 20 is 40% of. That’s easy enough by cross multiplication:

20/x = 40/100

20/x = 4/10

20/x = 2/5

x = 50.

Double check by multiplying 50 * 0.4. Since 50 * 0.4 = 20, we know we have the right answer. There are about 50 swimmers on this team.

5 0
3 years ago
Please help! i don't know what to do
Strike441 [17]

Answer:

0.5* sin(x)

Step-by-step explanation:

As well known  sin (2A)= 2sin(A)*cos(A)

As in our case A=x/2  => cos(x/2*sin(x/2)=1/2*sin(x)=0.5*sin(x)

6 0
3 years ago
Five years from now, the sum of the ages of a women and her daughter will be 40 years. The difference in their present age is 24
CaHeK987 [17]

Answer:

Her daughter is <u>3 years</u> old now.

Step-by-step explanation:

Given:

Five years from now, the sum of the ages of a women and her daughter will be 40 years.

The difference in their present age is 24 years.

Now, to find how old is her daughter now.

Let the age of daughter be x\ years.

And the age of mother be y\ years.

According to question:

(x+5)+(y+5)=40

⇒ x+y+10=40

<em>Subtracting both sides by 10 we get:</em>

⇒ x+y=30

⇒ x=30-y............( 1 )

Now, as given in question:

The difference in their present ages is 24 years.

x-y=24

Putting the equation ( 1 ) in the place of x we get:

⇒ (30-y)-y=24

⇒ 30-2y=24

<em>Moving variable on one side and the numbers on the other:</em>

⇒ 30+24=2y

⇒ 54=2y

<em>Dividing both sides by 2 we get:</em>

⇒ 27=y

So, <em>the age of the mother is 27 years.</em>

Now, putting the value of  y in equation( 1 ) we get:

x=30-27

⇒ x=3

<em>The age of daughter is 3 years.</em>

Therefore, her daughter is 3 years old now.

4 0
3 years ago
Other questions:
  • Combing like terms<br>needs ASAP​
    8·2 answers
  • A bank offers an annual simple interest rate of 8% on home improvement loans. How much would Tobias owe of he borrowed $17,000 o
    11·1 answer
  • Cheese cost 440 per pound find a cost per kilogram​
    7·1 answer
  • The legs of a right triangle are 10 centimeters and 24 centimeters long. What is the length of the hypotenuse?
    12·1 answer
  • URGENT!! 25 points. help on C please. this assignment is already late
    8·1 answer
  • Is this wrong?
    5·1 answer
  • Prove ||a+b|| ≤ ||a||+|b||​
    9·1 answer
  • Help please
    7·1 answer
  • Cora is building block towers of two different heights. In each tower, the ratio of blue blocks to purple blocks remains the sam
    5·1 answer
  • Find the exact solutions of x2 − 3x − 5 = 0 using the quadratic formula. Show all work! 75 points please help!!!!!
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!