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Charra [1.4K]
4 years ago
8

Math help.......... will be marking brainly

Mathematics
1 answer:
Nikolay [14]4 years ago
7 0

Answer:

B.) 28%

Step-by-step explanation:

There are 50 total spins so far and 28% of them have been 4's. So that is the probability.

You might be interested in
A marathon runner runs at the rate of 9 mph for the complete course. A track man runs at 12 mph. If together they run for 3 hrs.
weqwewe [10]
The first thing to do is organize all the given data so that you won't be confused which is which. Let's denote all the given that belongs to the marathon runner with a subscript of 1 and that of the trackman with a subscript of 2. The first equation we could do is find the sum of time:

t₁ + t₂ = 3 hours and 1 minute

For consistency, let's convert minute to hours. 
1 minute (1 hour/60 minutes) = 1/60
Total time = 3+1/60 = 3.0167 hours

t₁ + t₂ = 3.0167 hours  ----> equation 1

The other equation is the total distance. When you multiply speed with time, the answer would be distance. Thus.

9t₁ + 12t₂ = 28 miles ----> equation 2

Since there are two unknowns and 2 equations, the system is solvable:

t₁ = 3.0157 - t₂
9(3.0167 - t₂) + 12t₂ = 28
t₂ = 0.2832 hour, and 
t₁ = 3.0157 -  0.2832 = 2.733 hours

Therefore, the distance run by the marathon runner is
9*2.733 = 24.597 or approximately 24 3/5.
7 0
4 years ago
Read 2 more answers
Can someone please help me? :)
olga nikolaevna [1]

The size of a crowd standing along with a 1/4 mile section of a parade route: 5280 people

<h3>Further explanation </h3>

Comparison is an effort to compare two or more objects in terms of shape or size, or number

Proportional Comparisons are comparisons of two or more numbers where one number increases, the other numbers also increase

Can be formulated

\frac{x1}{y1}=\frac{x2}{y2}

so that if:

x = 2

then

y=\frac{y}{x}\times\:2

While the reversal value comparison is the comparison of two or more numbers where one number increases, the other number decreases in value

Can be formulated

\frac{x1}{y2}=\frac{x2}{y1}

so that if:

x = 2

then

y=\frac{x}{y}\times\:2

The size of a crowd who can see the parade can be calculated using the principle of proportional comparison

  • 1. We calculate the ratio of people and areas that can be occupied

The question stated that 10 people occupy a square measuring 5 feet by 5 feet

means the area occupied by 10 people = 5 ft x 5 ft = 25 ft²

so the ratio is :

\frac{10}{25}

  • 2. We calculate the area of ​​the road that can be occupied when viewing the parade

Because there are 1/4 mile section of a parade route and 5 feet deep on both sides of the street, the total area

1 mile = 5280 ft

1/4 mile = 1320 ft

Total area = 1320 ft x 5 ft (deep) x 2 (both sides of the street) = 13200 ft²

Then the comparison of points 1 and 2 can be used to calculate the total number of people who saw the parade

\frac{10\:people}{25\:ft^2\:area}=\frac{total\:people\:watched}{13200\:ft^2\:total\:area}

Total people =

\frac{10\:\times\:13200}{25}

Total people = 5280 (C)

<h3>Learn more </h3>

Divide 80 in a ratio of 3: 2

brainly.com/question/155058

percent of 19.5 is 70.59

brainly.com/question/1834017

The average weight of the top 5 fish

brainly.com/question/982457

Keywords: parade, street, area, crowd, comparison

3 0
3 years ago
Next 3 terms -33, -24 ,-15 -6
rosijanka [135]

Answer:

3, 12, 21

Step-by-step explanation:

The change is +9

7 0
3 years ago
Please help. (1/x)&lt;2. It says to concider 2 cases. I already got x&gt;(1/2). How do I find another case.
Natalija [7]
\frac{1}{x}0\\&#10;x\in(-\infty,0)\cup(\frac{1}{2},\infty)&#10;&#10;
8 0
4 years ago
Melissa has scored 83 , 84 , 93 , 77 , and 85 on her previous five tests. what score does she need on her next test so that her
pantera1 [17]

83 x 6 = 498

 all six of her scores need to equal at least 498 for an 83 average

83 + 84 + 93 + 77 + 85 = 422

498-422 = 76

 she needs a 76

7 0
3 years ago
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