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nata0808 [166]
3 years ago
15

Again need help Againnnn

Mathematics
1 answer:
dolphi86 [110]3 years ago
8 0

Answer:

my brain is not working right now i am sorry i just had to put my dog down and i am T-T

Step-by-step explanation:

You might be interested in
lilli has $3.65 comprised of quarters and dimes floating on the bottom of her bag she has five more dimes than twice her quarter
marta [7]

Answer:

= 3.65.

Step-by-step explanation:

You know that Tom has 23 coins in total. That means the number of dimes and the number of quarters equals 23.

D + Q = 23

You also know that the total value of the coins is $3.65. A dime is worth $0.10 and a quarter is worth $0.25, so:

0.10*D + 0.25*Q = 3.65

That says that 10 cents per dime times the number of dimes, plus 25 cents per quarter times the number of quarters is three dollars and sixty-five cents.

So you have a system of linear equations:

D + Q = 23

0.10D + 0.25Q = 3.65

I'm going to multiply the bottom row by 100 to clear the decimals.

D + Q = 23

10D + 25Q = 365

Now I can multiply the top row by -10 to eliminate the D terms

-10D - 10Q = -230

10D + 25Q = 365

________________

0D + 15Q = 135

15Q = 135

Q = 9

Tom has 9 quarters.

If D + Q = 23, and Q = 9, then:

D + 9 = 23

D = 14

Tom has 14 dimes.

Always good to double check:

9 quarters is worth $2.25. 14 dimes is worth $1.40. These should sum to $3.65.

2.25 + 1.40

8 0
3 years ago
Maths equation please help
IrinaVladis [17]

Answer:

<em>V=120cm³</em>

Step-by-step explanation:

<em>v=12(5)(6)-4(10)(6)</em>

<em>v=120cm³</em>

<em>hope it helps...</em>

<em>have a great day!!</em>

7 0
3 years ago
For every 1 litre of water used to make a medicine, 199 ml of sucrose and 47 ml of saline solution are used. Express the amount
deff fn [24]

Answer:

water : sucrose : saline = 1000 : 199 : 271

Step-by-step explanation:

Given Information:

  • water = 1 litre

Process:

  • convert everything to mL (same units)
  • 1 litre = 1000 ml
  • water = 1 litre = 1000 ml
  • water : sucrose : saline = 1000 : 199 : 271
4 0
3 years ago
A recipe uses 5 cups of flour for every 2 cups of sugar. How much sugar is needed for 6 cups of flour
sp2606 [1]

Answer:

2.4 cups

Step-by-step explanation:

Divide 2 by 5

= 0.4

We have 2 cups of sugar

2 + 0.4 = 2.4 cups.

8 0
4 years ago
Five books on Lisa's reading list are fiction.
elena55 [62]
25 books in her entire reading list.
7 0
3 years ago
Read 2 more answers
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