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Solnce55 [7]
3 years ago
14

HELP SMART PPL!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
mezya [45]3 years ago
3 0

Answer:

33.75

Step-by-step explanation:

45x0.75=33.75

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What is the y-intercept of the line?
Amanda [17]

Answer:

The equation of any straight line, called a linear equation, can be written as: y = mx + b, where m is the slope of the line and b is the y-intercept. The y-intercept of this line is the value of y at the point where the line crosses the y axis.

Step-by-step explanation:

<em> got this answer from (www.Math.com) </em>

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<em>Glad I helped! =)</em>

5 0
3 years ago
A public health official is planning for the supplyof influenza vaccine needed for the upcoming flu season. She wants to estimat
Marizza181 [45]

Answer:

n=\frac{0.5(1-0.5)}{(\frac{0.04}{1.64})^2}=420.25  

And rounded up we have that n=421

Step-by-step explanation:

We know that the sample proportion have the following distribution:

\hat p \sim N(p,\sqrt{\frac{p(1-p)}{n}})

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by \alpha=1-0.90=0.1 and \alpha/2 =0.05. And the critical value would be given by:

z_{\alpha/2}=-1.64, z_{1-\alpha/2}=1.64

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}    (a)  

And on this case we have that ME =\pm 0.04 and we are interested in order to find the value of n, if we solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}   (b)  

We assume that a prior estimation for p would be \hat p =0.5 since we don't have any other info provided. And replacing into equation (b) the values from part a we got:

n=\frac{0.5(1-0.5)}{(\frac{0.04}{1.64})^2}=420.25  

And rounded up we have that n=421

5 0
3 years ago
Write the slope -intercept form of the equation. y-4=2(x-3)
abruzzese [7]

Answer:

y=2x-2

Step-by-step explanation:

Slope intercept form y= mx+b

y-4 = 2(x-3)

y-4= 2x-6

y-4+4= 2x-6+4

y= 2x-2

5 0
3 years ago
Solve each one variable equation.
uranmaximum [27]

Answer:

See below in bold.

Step-by-step explanation:

a.  |x| = 6

x = 6, -6.

b.  |x − 5| = 4

x - 5 = 4

x = 9.

x - 5 = -4

x = 1.

c. 2|x + 3| = −10

No solution because |x + 3| is an absolute value so is always positive.

8 0
3 years ago
- 3.512 m = what does that equal​
Aleksandr [31]

Answer:

-3.512m

Step-by-step explanation:

−3.512m

=−3.512*m

=−3.512m

8 0
3 years ago
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