3 years ago

Erica had 6 coins in her coin collection. She goes to a coin show and buys some more coins. How many does she have now?

Mathematics

1 answer:

Svetlanka [38]3 years ago

4 0

Why would she be paying for another form of currency is the real question?

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I'm trying to find the answer to this please help!

timofeeve [1]

Ion know bro you tryna help me

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2 years ago

Solve the equation: -2/5 n = -30 A. n=-75 B. n=-12 C. n=12 D. n=75

OLEGan [10]

Assuming your equation is: -2/5n = -30

-2/5n = -30 <- We get rid of the "/5n" by multiplying each side by 5n
-2 = -30 * 5n
-2 = -150n
-1 = -75n
75n = 1

But this doesn't match up with any of your answers, so if you wouldn't mind giving me the equation again, i'll work it out

6 0

3 years ago

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Which expressions show a way to solve this problem? marsha had 54 beads. she kept 14 of the beads and shared the rest equally am

leonid [27]

54 - 14 = 40
40/5 = 8
Each friend recieved 8 beads

8 0

3 years ago

A rectangular pool is surrounded by a walk 3 meters wide. The pool is 4 meters longer than its width. If the total area of the p

motikmotik

x = 26 m is the width of the pool, length: 29+4 = 33 m.

Step-by-step explanation:

We have A rectangular pool is surrounded by a walk 3 meters wide. The pool is 4 meters longer than its width. If the total area of the pool walk is 372 square meters more than the area of the pool.

Let the width of the pool = x

Then the length will = (x+4) ,over all dimensions will be (x+6) by (x+6+4) or (x+10)

Total area - pool area = 372

$(x+10)*(x+6) - x(x+4) = 372\\x^{2}+16x+60-x^{2}-4x = 372\\12x+60 = 372\\12x = 372-60\\12x = 312\\x = 26$

∴ x = 26 ft is the width of the pool, length: 29+4 = 33 ft

7 0

3 years ago

Given that f(x)=x-3 and g(x)=x^2-x, find (f+g)(-2)

mario62 [17]

Answer:

(f + g)(- 2) = 1

Step-by-step explanation:

(f + g)(x) = f(x) + g(x) , thus

f(x) + g(x)

= x - 3 + x² - x

= x² - 3

Thus

(f + g)(- 2) = (- 2)² - 3 = 4 - 3 = 1

3 0

2 years ago