All categories

2 years ago

HELP PLEASEEEEEEE it’d be rlly appreciated

Mathematics

2 answers:

Alex_Xolod [135]2 years ago

4 0

Answer: they have

et n = number of nickels

Let d = number of dimes

given:

(1) +n+%2B+d+=+45+

(2) +5n+%2B+10d+=+360+

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

Multiply both sides of (1) by 5

and subtract (1) from (2)

(2) +5n+%2B+10d+=+360+

(1) +-5n+-+5d+=+-225+

+5d+=+135+

+d+=+27+

and, since

(1) +n+%2B+d+=+45+

(1) +n+%2B+27+=+45+

(1) +n+=+45+-+27+

(1) +n+=+18+

She had 18 nickels and 27 dimes

check:

(2) +5%2A18+%2B+10%2A27+=+360+

(2) +90+%2B+270+=+360+

(2) +360+=+360+

Step-by-step explanation:

professor190 [17]2 years ago

3 0

Answer:18 nickels 27 dimes

You might be interested in

Marvin has 4 books to read for homework this week if he reads 2/3 of a book each night how many nights will it take him to read

Margarita [4]

Answer:

6 night

PLEASE SAID THANKS

8 0

2 years ago

Read 2 more answers

How do I solve for x?

notka56 [123]

Solving:
$\frac{3+4x}{2} + \frac{5-x}{3} = \frac{29}{6}$
Make the Least Common Multiple (2,3,6)
$2,3,6\:|2$
$1,3,3\:|3$
$1,1,1\:|\underline{2*3=6}$

<span>Replace denominators and resolve:
</span> $\frac{3+4x}{2} + \frac{5-x}{3} = \frac{29}{6}$
$\frac{3(3+4x)}{6} + \frac{2(5-x)}{6} = \frac{29}{6}$
Cancel the dominators
$\frac{3(3+4x)}{\diagup\!\!\!\!6} + \frac{2(5-x)}{\diagup\!\!\!\!6} = \frac{29}{\diagup\!\!\!\!6}$
$3(3+4x) + 2(5-x) = 29$
$9 + 12x + 10 - 2x = 29$
$12x - 2x = 29 - 9 - 10$
$10x = 20 - 10$
$10x = 10$
$x = \frac{10}{10}$
$\boxed{\boxed{x = 1}}\end{array}}\qquad\quad\checkmark$

7 0

2 years ago

5c + 3 ≥ 6x -8<br><br> Solve the following inequality for cc. Write your answer in simplest form.

irina [24]

Answer:

c≥2(x-2) ÷ 5

Step-by-step explanation:

5c+3≥6x-8

5c ≥6x-8-3

5c≥6x-12

c≥(6x-12) ÷ 5

c≥ 2(x-2) ÷5

3 0

2 years ago

Identify the graphed linear equation.

Veseljchak [2.6K]

Answer:

Where is the graph.

Step-by-step explanation:

Where is the graph.

7 0

2 years ago

Read 2 more answers

What are two equivalent fractions for 1/2

pogonyaev

50/100
5/10
hope that helped :)

4 0

2 years ago

Read 2 more answers