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Sergeeva-Olga [200]
3 years ago
13

Help please math problem

Mathematics
1 answer:
vichka [17]3 years ago
6 0
The answers are A, C and F
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A collection of five coins has a value of $1 and consists of dimes and
DENIUS [597]

For this case we propose a system of equations. We have to:

x: Let the variable that represents the number of dimes

y: Let the variable that represents the number of quaters

We know that:

One dime equals 10 cents, $0.10

A quater equals 0.25 cents, $0.25

According to the statement we have:

x + y = 5\\0.10x + 0.25y = 1

We multiply the first equation by -0.10:

-0.10x-0.10y = -0.5

We have the following equivalent system:

-0.10x-0.10y = -0.5\\0.10x + 0.25y = 1

We add the equations:

-0.10x + 0.10x-010y + 0.25y = -0.5 + 1\\0.15y = 0.5\\y = \frac {0.5}{0.15}\\y = 3.33

Approximately 3 quater coins

x = 5-y = 5-3 = 2

And two dimes

Answer:

3 quater

2 dimes

4 0
3 years ago
A bag of marbles has 10 red marbles, 4 green marbles, and 6 blue marbles. A marble is randomly drawn from the bag before another
Anna007 [38]

Answer:

2/19

Step-by-step explanation:

i just took the test and no one helped me i got is wrong but when you go back to review it it tells you the answer hope im not too late

6 0
2 years ago
Find the difference using suitable identity (10.3 × 9.7) – (10.7 × 9.3)
finlep [7]

Answer:

\small\textrm\red{-------------------------------------------------------------------}\small\textrm\blue{-------------------------------------------------------------------}\small\textrm\green{-------------------------------------------------------------------}\small\textrm\blue{-------------------------------------------------------------------}mag sayaw ka nalang

\small\textrm\green{-------------------------------------------------------------------}\small\textrm\blue{-------------------------------------------------------------------}\small\textrm\blue{-------------------------------------------------------------------}\small\textrm\red{-------------------------------------------------------------------}

5 0
3 years ago
Lenny’s favorite radio station has this schedule:
kirill [66]
Answer: choice C) 19/60

----------------------------------------------------------------------------------------------------

Explanation: 

Add up the minute values: 19+4+37 = 60

We have a total of 60 minutes. Of that total, 19 minutes is dedicated to news.

Divide the two values (19 and 60) to get the fraction 19/60. We can't reduce from here so we leave it like that.
4 0
3 years ago
A family has an annual income of ​$25,200. Of​ this, 1/4 is spent for​ food, 1/5 or​ housing, 1/10 for​ clothing, one ninth for​
STatiana [176]
Simply divide $25,200 by 5
25200 \div 5 = 5040

$5,400 was spent on housing
6 0
3 years ago
Read 2 more answers
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