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andreev551 [17]
3 years ago
5

Janet has three coins.

Mathematics
1 answer:
tatyana61 [14]3 years ago
8 0

Answer:

Janet has coins worth 252.5, 101, and 50.5.

Step-by-step explanation:

Let us call the three coins a,b, and c.

The first coin a is 5 times another coin<em> (let's say </em>b); therefore,

a = 5b,

and the third coin is 2 times the value of another coin<em> (it's coin </em>b<em>):</em>

<em />c =2b<em>.</em>

The total worth of all coins is 404; therefore,

a+b+c =404

or

5b+b+2b =404

8b =404

\boxed{b = 50.5}

with the value of b in hand, we find a and c:

a = 5b = 5(50.5)

\boxed{a = 252.5}

and for c:

c = 2 b = 2 (50.5)

\boxed{c = 101}

Thus, Janet has 3 coins worth 252.5, 101, and 50.5.

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#2
I am Lyosha [343]

You have the right idea that things need to get multiplied.

What should be done is that the entire fraction needs to get multipled by the lowest common denominator of both denominators.

Let's look at the complex numerator. Its denominators are 5 and x + 6. Nothing is common with these, so both pieces are needed.

The complex denominator has x - 3 as its denominator. With nothing in common between it and the complex numerator, that piece is needed.

So we multiply the entire complex fraction by (5)(x + 6)(x -3).

Numerator: (\frac{1}{5} -\frac{5}{x + 6})(5)(x +6)(x-3) =\frac{1}{5}(5)(x +6)(x-3) -   \frac{5}{x + 6}(5)(x +6)(x-3)

= (x+6)(x-3) - (5)(5)(x-3)

= (x+6)(x-3) - 25(x-3)

= (x-3)(x + 6 - 25) <--- by group factoring the common x - 3

= (x -3)(x - 19)

Denominator:

\frac{25}{x - 3} * (5)(x + 6)(x - 3) = (25)(5)(x + 6) = 125(x + 6)


Now we put the pieces together.


Our fraction simplies to (x - 3) (x - 19) / 125 (x + 6)

5 0
3 years ago
PLS HURRY Kimberly had p coins. Then she found 5 more coins in a drawer. Write an expression that
stellarik [79]

Answer: p + 5 = new amount

Step-by-step explanation:

You have to write it the way it's read

she has p = current coins

she found 5 more, ( +5 )

write that down and you get p + 5 = new amount

hope this helps

plz mark brainleist

6 0
3 years ago
Read 2 more answers
A=1/2(a+b)h solve for h
max2010maxim [7]
H= 2a/a+b woolud be the answer
5 0
3 years ago
How is 7.7 x 1.4 = 10.78
stellarik [79]
Do 77 times 14

770+308=1,078

Divide 1,078 by 100
=10.78
8 0
3 years ago
Read 2 more answers
Helpp asapp please due soonn
ivanzaharov [21]

Answer:

A.

Step-by-step explanation:

1.5m + 6.5q > 100

✨♥️

7 0
2 years ago
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