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deff fn [24]
3 years ago
10

HELP FAST!!!!! 26 pts

Mathematics
1 answer:
Yakvenalex [24]3 years ago
8 0

Answer is D) $300

Step-by-step explanation:

First find the rate of how many dollars she earns in 1 hour = $180/18

Mabel earns $10/h so 30 hours x $10 = $300/30 hours

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50 points please help :(
Andre45 [30]

\frac{(y - 1) {}^{2} }{9 }  -  \frac{( {x - 2)}^{2} }{100}  = 1

\frac{(y { - 1)}^{2} }{ {3}^{2} }  -  \frac{ {(x - 2)}^{2} }{ {100}^{2} }  = 1

( \frac{y - 1}{3}  {)}^{2}  - ( \frac{x - 2}{10 }  {)}^{2}  = 1

7 0
3 years ago
Read 2 more answers
How to find slope when giving two equations that equal each other?
9966 [12]

slope formula.:

m = (y_2 - y_1) / (x_2 - x_1)

so you just need two points from whatever function you have

Or if you already have the function formula, then just the number of the first term (if your function is this: y=ax^2 + bx + c then the a is the slope)

Hope this helps!

4 0
3 years ago
If each exterior angle of a regular polygons=40 how many sides does it have ?
ZanzabumX [31]
All angles=40
therefore, internal angle= 140 degree
therefore, it has 5 sides
7 0
3 years ago
Leo sold candy bars for a fundraiser. He spent $25 on a box of candy bars and
Ratling [72]

Answer:  

He sold 47 candy bars  

Step-by-step explanation:  

Add 25 and 69 (94)  

Divide by 2 and you get 47  

Mark me as brainliest if this helps!

5 0
3 years ago
Read 2 more answers
The population distribution of SAT scores is normal with a mean of μ=500 and a standard deviation of SD=100. For example, what i
vitfil [10]

Answer:

0.02275

Step-by-step explanation:

We use the z score formula to solve for this

z-score is given as: z = (x-μ)/σ

where x is the raw score,

μ is the population mean

σ is the population standard deviation

In the above question:

mean of μ=500

a standard deviation of SD=100

raw score x = 700

Hence, z score = (700 - 500)/ 100

= 200/100

= 2

z score = 2

Using the z score table of normal distribution to find the Probability of z = 2

P( x = z)

= P(x = 700)

= P( z = 2)

= 0.97725

P(x>700) = 1 - P(x = 700)

= 1 - 0.97725

= 0.02275

Therefore, the probability of randomly selecting an individual from this population who has an SAT score greater than 700 is 0.02275

7 0
3 years ago
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