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erastovalidia [21]
3 years ago
15

If four students are selected at random, find the probability that all four rate their study habits as very good

Mathematics
1 answer:
maxonik [38]3 years ago
8 0
Would depend on how many other students are in the class/school.
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What is the value of x in the proportion 2/5 = 10/x? (show work)
MakcuM [25]

\frac{2}{5}  =  \frac{10}{x}  \\ cross \: multiply \\ 2x = 50 \\ x =  \frac{50}{2}  \\ x = 25
6 0
4 years ago
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I need help<br><br><br><br> Thx guys
Evgesh-ka [11]
Plugging in the numbers 7x - 2y = 39 fitted and made sense
8 0
3 years ago
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The following scatter plot represents the number of views a video gets each day.
N76 [4]

Answer:

y = 1.0535(4.9512)^x

It can be considered a viral video

Step-by-step explanation:

Using the exponential regression calculator, the regression model obtained is :

y = 1.0535(4.9512)^x

Using the model, we can determine if a video can be considered viral ;

Number of days, x = 10

y = 1.0535(4.9512)^10

y = 1.0535(8853290.1338)

y = 9,326,941.15

Hence, video will receive way over 3 million reviews, a review of about 9,326,941, hence, it can be considered a viral video.

6 0
3 years ago
I need help with this
Nat2105 [25]

Answer:

angle B is 38°

Step-by-step explanation:

all angles in a triangle has to equal 180°.

So first find the measurement of angle BAD. This is done by subtracting angle of CAD=46° from the total angle CAB=78° to get 32° for angle BAD. So if angle ADB is 110° and angle BAD is 32° which equals (110+32=) 142.

Then take 180 - 142 = 38°

4 0
3 years ago
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The perimeter of triangle ABC is 54. the triangle has side lengths AB=3x, BC=4x, AC=5x. Find the length of each side.
elena-14-01-66 [18.8K]

The perimeter of a triangle is the sum of its sides. So, we have

P = \overline{AB}+\overline{BC}+\overline{AC}

We have an exact value for the perimeter, and variable expressions for the sides. Let's substitute the formula above with what we're given:

54 = 3x+4x+5x = 12x

If you divide both sides by 12, you have

x = \dfrac{54}{12} = 4.5

So, the lengths of the sides are

AB = 3x = 3\times 4.5 = 13.5

BC = 4x = 4\times 4.5 = 18

AC = 5x = 5\times 4.5 = 22.5

7 0
3 years ago
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