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mojhsa [17]
3 years ago
7

HELP EASY PROBABLILITY QUESTION!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
erica [24]3 years ago
8 0

Answer:

0.43

Step-by-step explanation:

u prolly already got it lol

ella [17]3 years ago
3 0

Answer:

0.43

Step-by-step explanation:

2+3+1+1=7

7*4+28==Area of full shape

(2*4)+(1*4)=12==Area of shaded shapes

12/28=0.428571>rounded up>0.43

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The school wishes to purchase 2500 pens and have discovered that 3 stores sell the same model pen.Which store has the best buy ?
8_murik_8 [283]
Store\ A:  \frac{0.5}{15}=0.0333\ cents\ per\ pen \\  \\ Store\ B: \frac{1.7}{50}=0.034\ cents\ per\ pen \\  \\ Store\ C: \frac{0.9}{30} =0.03\ cents\ per\ pen \\  \\ Store\ C\ is\ the\ cheapest.
7 0
3 years ago
A boat leaves a dock and goes 240 miles in a direction of 290 degrees. It then turns and goes 50 miles in a direction on 30 degr
Leno4ka [110]

By Pythagorean theorem and trigonometric functions, the magnitude and direction of the boat are approximately 284.403 miles and 295.043° with respect to the east.

<h3>What is the direction and magnitude of the resulting displacement with respect to the origin</h3>

In this problem we assume that the <em>first</em> angle is measured with respect to the <em>east</em> side and that the <em>second</em> angle is <em>counterclockwise</em> and measured with respect to the direction of the <em>first</em> vector. First, we need to determine the resulting vector by using <em>trigonometric</em> and <em>vectorial</em> formulas:

(x, y) = (240 · cos 290°, 240 · sin 290°) + (50 · cos 320°, 50 · sin 320°)

(x, y) = (120.387, - 257.666) [mi]

The magnitude is found by Pythagorean theorem:

r = \sqrt{(120.387\,mi)^{2}+(-257.666\,mi)^{2}}

r ≈ 284.403 mi

The direction of the boat is obtained by <em>inverse trigonometric</em> functions:

θ = tan⁻¹ (- 257.666/120.387)

θ ≈ 295.043°

By Pythagorean theorem and trigonometric functions, the magnitude and direction of the boat are approximately 284.403 miles and 295.043° with respect to the east.

To learn more on vectors: brainly.com/question/13322477

#SPJ1

7 0
2 years ago
Jordan bikes at a speed of 8 2/3mph. How many miles will he bike in:<br> 45 minutes?
olganol [36]

Answer:

6 miles

Step-by-step explanation:

You Can make a proportion

\frac{26/3 miles}{60 minutes}=\frac{x}{45 minutes}

Now cross multiply

45*26/3 is 360

and 60*x is 60x

make an equation

60x=360

x=6

So 6 miles

6 0
3 years ago
Read 2 more answers
Write the complex number in the form a+bi . 8(cos30+isin30)
Sophie [7]
Hello,

since sin 30°=1/2 and cos 30°=√3/2
then
8(cos 30+i sin 30°)=8*(√3/2+i/2)=4√3+4i
3 0
3 years ago
Read 2 more answers
When you add two rational numbers, each number can be written as a?
ra1l [238]
<span>The correct answer to your question is... a rational #, because w</span><span>hen you add two rational #'s, each # can be written as a rational #. 
</span><span>
Reasoning:
So, adding two rational #'s like adding fractions will result in another fraction of this same form since integers are closed under + and x. Thus, adding two rational #'s produces another rational #.

By the way # means number.

</span>I hope this helps!
Please Rate & Thank!
Please mark as Brainliest!

Have a wonderful day! : )
8 0
3 years ago
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