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blondinia [14]
3 years ago
12

How many different pairs of marker can be formed if you have one yellow,one red ,one green ,one blue,and one purple marker?

Mathematics
1 answer:
Marianna [84]3 years ago
4 0
4 different pairs of marker combinations can be formed
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Jacob's college savings are invested in a bond that pays an annual interest of 6.2% compounded continuously. How long will it ta
docker41 [41]
So you have some initial amount x and we want to know how long it will take with compound interest to triple our original amount x (so 3x). The equation sets up like 3x(the amount we want)= x(original amount) times 1.062(the interest increase)^t So 3x=x(1.062)^t where t is the amount of years. When you divide both sides by x it cancels out and you end up with 3=1.062^t. Take the natural log of both sides. Ln(3) = Ln(1.062^t) and the t being an exponent can come in front of the the natural log. Ln(3) = t(Ln(1.062)) Divide both sides by (Ln(1.062)),. Ln(3)/Ln(1.062)=t. And you should just plug that into a calculator to find t.
6 0
2 years ago
Vertical and horizontal line (1,-4)—do X=blank and Y=blank
Mila [183]

Answer:

x = 1 and y = - 4

Step-by-step explanation:

The equation of a vertical line is

x = c

where c is the value of the x- coordinates the line goes through.

Here the line passes through (1, - 4) with x- coordinate 1, thus

x = 1 ← equation of vertical line

The equation of a horizontal line is

y = c

where c is the value of the y- coordinates the line goes through.

Here the line passes through (1, - 4) with y- coordinate - 4, thus

y = - 4 ← equation of horizontal line

5 0
3 years ago
Clinical trials involved treating flu symptoms with a new medicine. Among 724 patients treated
schepotkina [342]

According to the null hypothesis, the test statistic of the proportion is of z = 120.1.

<h3>What is the null hypothesis?</h3>

The claim is that the rate of nausea is greater than the 6% rate experienced by flu patients given a placebo. At the null hypothesis, we consider the claim as false, hence the null hypothesis is:

H_0: p \leq 0.06

<h3>What is the test statistic?</h3>

The test statistic is given by:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}

In which:

  • \overline{p} is the sample proportion.
  • p is the proportion tested at the null hypothesis.
  • n is the sample size.

In this problem, the parameters are:

p = 0.06, n = 724, \overline{p} = \frac{72}{724} = 0.0994

Hence, the test statistic is given by:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}

z = \frac{0.0994 - 0.06}{\sqrt{\frac{0.06(0.94)}{724}}}

z = 120.1

You can learn more about test statistic at brainly.com/question/16313918

8 0
2 years ago
1.496 x 10^8 please show work on how you solved !
bagirrra123 [75]

Answer:

The answer is 149600000

i just calculate it.

thats all.

5 0
3 years ago
Read 2 more answers
A bird is attempting to fly northeast at a constant speed, but a wind blowing southward at 5 miles per
guajiro [1.7K]

Answer:

The value is v_b  =  9.89 \  miles /hour

Step-by-step explanation:

From the question we are told that

The velocity of the wind southward is v  =  5 j \  miles / hour

The resultant velocity of the bird with the with wind is V= \sqrt{53}

Generally for an object moving in the northwest direction the angle with the horizontal is 45°

Generally the velocity of the bird in the along the x -axis is

V_x= v_b cos 45^o i

Generally the velocity of the bird in the along the y -axis is

V_y=(v_b sin 45^o - 5)j

Here v_b is the velocity of the bird without the wind

Generally the resultant velocity of the bird with the with wind is mathematically represented as

V  =  \sqrt{V_x^2 + V_y^2 }

=> \sqrt{53}  =  \sqrt{(v_b cos 45^o)^2 + (v_b sin 45^o - 5)^2 }

Generally

sin 45^o = \frac{1}{\sqrt{2} }

and

cos 45^o = \frac{1}{\sqrt{2} }

So

\sqrt{53}  =  \sqrt{(v_b* (\frac{1}{\sqrt{2} ))^2 + ([v_b * (\frac{1}{\sqrt{2} ) ]- 5)^2 }

=> 53 =  \frac{1}{2} v_b^2  +  \frac{1}{2} v_b^2 + 5^2 -2*5 * \frac{1}{\sqrt{2} } v_b

=> 53 =  v_b^2 + 25 - 5 \sqrt{2} v_b

=> v_b^2 - 5 \sqrt{2} v_b -28 = 0

Solving the above quadratic equation using quadratic formula we obtain that

v_b  =  9.89 \  miles /hour

The other value is negative so we do not make use of it because we know that the bird is moving in the positive x and y axis

7 0
3 years ago
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