3 years ago

105_21 how can u do this

Mathematics

1 answer:

sladkih [1.3K]3 years ago

4 0

Is this division. multiplication, etc.

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A jar has 5 red marbles, 3 blue marbles, and 2 green marbles. what is the probability that you would choose a red marble, return

denis23 [38]

Answer:

In Fraction = 10/100 simplified = 1/10

Decimal = 0.1

Percentage = 10%

Step-by-step explanation:

We add all marbles = 5+ 3+ 2 = 10

Event 1 = Red = 5/10

Event 2 = Green = 2/10

We follow this path and multiply = 2 x 5 / 10 x 10 = 10/100 = 1/10

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3 years ago

HELP ASAP!! - Natalie is working two summer jobs, making $7 per hour babysitting and making $11 per hour clearing tables. In a g

LenKa [72]

11x11=121
$140-121=19
19/7=
It would take approximately 2hours and 71 minutes to meet her requirements.

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3 years ago

The revenue, in dollars, of a company that makes toy cars can be modeled by the polynomial 3x2 + 4x – 60. The cost, in dollars,

sladkih [1.3K]

That would be

3x^2 + 4x - 60 - (3x^2 - x + 200)

= 4x - 60 + x - 200

= 5x - 260 Answer

6 0

4 years ago

An airplane flew with the wind for 2.5 hours and returned the same distance against the wind in 3.5 hours. If the cruising speed

KengaRu [80]

Answer:

60 miles per hour.

Step-by-step explanation:

Let r represent speed of wind blowing in miles per hour.

We have been given that the cruising speed of the plane was a constant 360 mph in air. The speed of the plane is the direction of wind would be $360+r$ .

The speed of the plane is the opposite direction of wind would be $360-r$ .

$\text{Distance}=\text{Speed}\times \text{Time}$

Distance covered in the direction of wind would be $2.5(360+r)$ .

Distance covered in the opposite direction of wind would be $3.5(360-r)$ .

Since both distances are same, so we will get:

$2.5(360+r)=3.5(360-r)$

$900+2.5r=1260-3.5r$

$900-900+2.5r+3.5r=1260-900-3.5r+3.5r$

$6r=360$

$\frac{6r}{6}=\frac{360}{6}$

$r=60$

Therefore, the wind is blowing at a rate of 60 miles per hour.

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3 years ago

Harrison creates balloon animals for different events. He has 6440 balloons. He wants to use the same number of balloons for eve

saveliy_v [14]

6440 divide by 28 which equals 230 so C

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3 years ago