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Lapatulllka [165]
3 years ago
12

Michaela spent a total of 12 1/2 hours doing her online learning work this week. If she spent 5 3/4 of those hours working on Mo

nday, how much time did she work the rest of the week?
Mathematics
2 answers:
g100num [7]3 years ago
6 0
You Ask Alexa or Siri and I will tell you
Elanso [62]3 years ago
6 0
6 1/4 would be your answer because
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3(x – 5) = 2(x – 5) + x solve for x and number of soultions
ArbitrLikvidat [17]

Answer:

Step-by-step explanation

3x-15=2x-10+x

3x-15=3x-10

in this step, problem happens

becoz both side doesnt equal, no ans can be proven

4 0
3 years ago
Read 2 more answers
A person recently read that 84% of cat owners are women. How large a sample should the researcher take if she wishes to be 90% c
Lana71 [14]

Answer:

405

Step-by-step explanation:

To find sample size, use the following equation, where n = sample size, za/2 = the critical value, p = probability of success, q = probability of failure, and E = margin of error.

n=\frac{(z_{\frac{\alpha }{2} })^{2} *p*q  }{E^2}

The values that are given are p = 0.84 and E = 0.03.

You can solve for the critical value which is equal to the z-score of  (1 - confidence level)/2.  Use the calculator function of invNorm to find the z-score.  The value will given with a negative sign, but you can ignore that.

(1 - 0.9) = 0.1/2 = 0.05

invNorm(0.05, 0, 1) = 1.645

You can also solve for q which is 1 - p.  For this problem q = 1 - 0.84 = 0.16

Plug the values into the equation and solve for n.

n =\frac{(1.645)^2*0.84*0.16}{(0.03)^2}\\n= 404.0997333

Round up to the next number, giving you 405.

6 0
3 years ago
What is the general equation of a cosine function with an amplitude of 3, a period of 4 pi, and a horizontal shift of negative p
liberstina [14]

The cosine function with the given characteristics is:

f(x) = 3*cos(x/2 - pi).

<h3>How to get the cosine function?</h3>

The general cosine function is:

f(x) = A*cos(kx + p)

Where A is the amplitude and p is the phase, then we know that:

A = 3

p = -pi

Then we have:

f(x) = 3*cos(kx - pi)

And the period is equal to 4pi, then we must have that:

k*(x + 4pi) - pi = k*x - pi + 2pi

k = 1/2

Then the function is:

f(x) = 3*cos(x/2 - pi).

If you want to learn more about cosine functions:

brainly.com/question/4372174

#SPJ4

3 0
2 years ago
Vertical angle of isoceles triangle is 50° while it's base angles are together 2x .find x
Ghella [55]

Answer:

The sum of all the angles of an isoceles triangle is 180°

So it's 50° + 2x° = 180°

50 + 2x = 180

2x = 180 - 50

2x = 130

x = 130/2

x = 65

7 0
2 years ago
Solve for h in this equation: 12=1/2h (2 1)
Murljashka [212]
Hello there.

<span>Solve for h in this equation: 12=1/2h (2 1)

h=8/7</span>
6 0
2 years ago
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