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____ [38]
3 years ago
13

Help plz 30 points!!

Mathematics
2 answers:
ExtremeBDS [4]3 years ago
7 0

Answer:

the answer is a

Step-by-step explanation:

egoroff_w [7]3 years ago
5 0
It is A. We have a ratio of

900 workers : 3.2×10⁵

Dividing by 9×10² becomes

1 worker :\frac{3.2}{9} ×10³

3.2/9 is just 0.36 rounded so it is

1 worker : 0.36×10³

or A
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in the morning, sophie goes to the church then goes to school. in the afternoon she goes from school to home. the map shows the
olasank [31]
Distance between home and school(on map)=5cm

every 4cm=8km

therefore distance between home and school=
5/4×8 = 1.25×8 = 10km
5 0
3 years ago
I am a square. One of my side is 9 feet long. What is my area?
Stella [2.4K]

Hello from MrBillDoesMath!

Answer:

81 ft^2

Discussion:

The area of a square is (length of a side)^2.  In this case,

Area = 9^2 = 81


Regards,  

MrB

P.S.  I'll be on vacation from Friday, Dec 22 to Jan 2, 2019. Have a Great New Year!


8 0
3 years ago
When simplified and written in standard form, which quadratic function is equivalent to the polynomial shown?
mars1129 [50]

Answer:

2c^2 - 2c - 3

Step-by-step explanation:

Next time, please share the answer choices.  Thank you.

Group together the 'c' terms in 2 + 7c – 4c2 – 3c + 4:

                                                     2  + 4c and -4c^2 + 4  Then we have:

-4c^2 + 4c + 6

We should reduce this by factoring -2 out of all three terms:

2c^2 - 2c - 3  This is the desired quadratic in standard form.

3 0
2 years ago
Question 1 of 10
riadik2000 [5.3K]
D. F(x)=x^2. That’s The quadratic parent function
6 0
2 years ago
Read 2 more answers
A college statistics class at a nearby university has 1,000 students enrolled in it. On a recent exam, the mean score was 75% wi
IceJOKER [234]

Answer:

38.11%

Step-by-step explanation:

Given that:

Mean (μ) = 75, standard deviation (σ) = 5

Z score is a measure in statistics to determine the variation of a raw score from the mean. It is given by the equation:

z=\frac{x-\mu}{\sigma}

To calculate the percentage of students scored between a 73 and 78 (C grade), we need to find the z score for 73 and then for 78.

For x = 73, the z score is:

z=\frac{x-\mu}{\sigma}=\frac{73-75}{5} =-0.4

For x = 78, the z score is:

z=\frac{x-\mu}{\sigma}=\frac{78-75}{5} =0.6

From the probability distribution table:

P(73 < x < 78) = P(-0.4 < z < 0.6) = P(z < 0.6) - P(z < -0.4) = 0.7257 - 0.3446 = 0.3811 = 38.11%

4 0
3 years ago
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