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never [62]
3 years ago
10

What was her score on this exam, rounded to the nearest integer

Mathematics
1 answer:
beks73 [17]3 years ago
8 0

Answer:

Where is the number I need to round to?

(Please don't give me a bad rating i'm trying to help :) )

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Suppose that you want to estimate average income in a population. If the standard deviation of income in the population is $1,00
Alik [6]

Answer:

2401

Step-by-step explanation:

Given that we want to estimate average income in a population.

The standard deviation of income in the population is $1,000

We want confidence interval around our estimate to be +/- $40

i.e Margin of error = 40

We know that margin of error = Std error * Z critical for 95%

i.e. 40 = 1.96 * std error

Std error = \frac{std dev}{\sqrt{n} } \\=\frac{1000}{\sqrt{n} }

Together we get

40=1.96(\frac{1000}{\sqrt{n} } )\\\sqrt{n} =\frac{1000*1.96}{40} \\=49\\n=2401\\

3 0
3 years ago
Find the area of the shape shown below. I NEED HELP NOWWWWWW
Varvara68 [4.7K]

Answer:

<h2> 12.5 units{}^{2}</h2>

Step-by-step explanation:

Given figure : Trapezoid

Base sides,

a = 2.5

b = 7.5

Height ( h ) = 2.5

Now, finding the area:

\frac{1}{2} (a + b) \times h

Plug the values

=  \frac{1}{2 }  \times (2.5 + 7.5) \times 2.5

Calculate the sum

=  \frac{1}{2}  \times 10 \times 2.5

Reduce the numbers with G.C.F 2

= 5 \times 2.5

Calculate the product

12.5 \:  \:  {units}^{2}

Hope this helps...

Best regards!

8 0
3 years ago
Which has a value closest to 9?<br> 63<br> 110<br> 99<br> 183
kirill [66]

Answer:

64

Step-by-step explanation

6 0
3 years ago
Factor the trinomial below x2+14x+48
Triss [41]

Answer:

(x+8)(x+6)

Step-by-step explanation:

14=6+8

48=6*8

x^2+6x+8x+48

x(x+6)+8(x+6)

(x+8)(x+6)

7 0
3 years ago
Read 2 more answers
an Olympic swimming pool is 6 meters long how many lives will and have to swim in order to swim 1 kilometer
vlada-n [284]
I'm guessing you mean laps here
Let's find out how many meters are in a kilometer. Kilo is 1000 more than a single unit, so for every kilometer you have 1000 meters.

so divide 1000/6 to find the amount of laps to swim 1 kilometer

166.6667
8 0
4 years ago
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