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asambeis [7]
2 years ago
10

A box was 3/4 full.the box fell on the floor. 30 marbles fell out. this was 20% of the marbles that were in the box. how many ma

rbles are in a full box
Mathematics
1 answer:
andrezito [222]2 years ago
5 0

Answer:

150

Step-by-step explanation:

all i did was multiply 20% by 50 if it wasnt that i went up 50 if one of them gave me 30 i would know i had the right one.

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(a) Tony bought 22 pounds of flour for $9. How many pounds of flour did he get per dollar?
BARSIC [14]

Answer:

The answer is, 2.44 pound of meat per dollar.

Step-by-step explanation:

I could be wrong, but I think you have to divide 22 by 9 and that's how you get your answer.

22/9 = 2.44

3 0
3 years ago
The domain of y=log(9-x^2),xER, is
jasenka [17]

Step-by-step explanation:

log(z) is defined when z > 0.

For log(9 - x²) to be defined, we have 9 - x² > 0.

=> x² < 9, -3 < x < 3.

The domain of y = log(9 - x²) is (-3,3).

3 0
3 years ago
Reflect -4,3 over the x-axis what is it
jasenka [17]

Answer:

-4,-3

Step-by-step explanation:

I think thats right! If not, let me know.

6 0
3 years ago
FACTOR....<br>x^2 + 10× - 2400 = 0​
Vikki [24]

Answer:

x= -5 + 5\sqrt{97}, x= -5 - 5\sqrt{97}

Step-by-step explanation:

Since this quadratic is set to zero, we can use the quadratic formula to solve this.

x^2 + 10x - 2400 = 0​

Quadractic formula =  x= -b +- \sqrt{b^2 - 4ac} /2a

For this equation:

a= 1, b=10, c=-2400

Plug these numbers into the equation and solve.

x= -10 +- \sqrt{10^2 - 4(1)(-2400})/2(1)

x= -10 +- \sqrt{100 + 9,600}/2

x= -10 +- \sqrt{9,700}/2

x= -10 +- \sqrt{2^2 * 5^2 * 97}/2

x= -10 +- 5 * 2\sqrt{97}/2

x= -10 +- 10\sqrt{97} / 2

Divide by 2.

x= -5 +- 5\sqrt{97}

Answer:

x= -5 + 5\sqrt{97} or x= -5 - 5\sqrt{97}

5 0
3 years ago
What is the area of the parallelogram ?
qwelly [4]

Answer:

<h2>45 in²</h2>

Step-by-step explanation:

Formula:

area of a parallelogram = base × height

==================================

By reading the figure :

base = 15

height = 3

Therefore,

The area of the parallelogram = 15 × 3

                                                  = 45

6 0
3 years ago
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