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miskamm [114]
3 years ago
9

HELP ASAP PLS

Mathematics
1 answer:
n200080 [17]3 years ago
6 0

Answer:

7/18

Step-by-step explanation:

Total Number of Boys in both grades:

4+3=7

Total Number of Students:

8+10=18

Number of boys/ number of students:

7/18

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X-9/2=-12 guys please help
Lesechka [4]

<u>Step-by-step explanation:</u>

How to solve for x?

Eliminate -(9/2) to find out the value of x.

<u>Add 9/2 to both sides of the equation:</u>

x =  - 7.5

8 0
3 years ago
Read 2 more answers
A: 2.86<br> B: 2.75<br> C: 2.95<br> D: 1.17
zhuklara [117]
No doubt your text advises how to arrive at a best-fit exponential model. The two graphing calculators I used gave different answers. The first one modeled the function as
y = 398.494(0.50526)^x
For x = 7, this model gives y = 3.35

The second calculator, a TI-84 work-alike, modeled the function as
y = 422.110(0.48896)^x
For x=7, this model gives y = 2.82

Using the first and last data points only, the model is
y = 200(0.06)^((x-1)/4)
For x=7, this model gives y = 2.94

Using yet another calculator to do linear regression on the log of y, the function is modeled by
y = 10^(2.62543-0.31073x)
which is another way to write the function produced by the TI-84 work-alike.

So, the technology I used gives a couple of reasons to choose
  A. 2.86
and a couple of reasons to choose
  C. 2.95

Of the models shown here, the ones with the lowest mean absolute deviation and the least squared error were the ones that produced the highest values of y for x=7, suggesting 2.95 is the best choice.


It would be advisable to use the procedure described in your text.

5 0
3 years ago
Read 2 more answers
Find the odds for and the odds against the event rolling a fair die and getting a 2, a 6, a 5 or a 1,
Archy [21]

Answer:

2/3

Step-by-step explanation:

If the dice has six sides then it would be 4/6 because there's four numbers out of 6 and if you simplify it then it would be 2/3.

8 0
3 years ago
Maths plz help me soon xD
LUCKY_DIMON [66]

rationalise the denominator by multiplying both top and bottom by (8-5√3) then expand and simplify

7 0
3 years ago
Suppose the integral from 2 to 8 of g of x, dx equals 12, and the integral from 6 to 8 of g of x, dx equals negative 3, find the
Artyom0805 [142]

\displaystyle\int_2^8g(x)\,\mathrm dx=12

\displaystyle\int_6^8g(x)\,\mathrm dx=-3

Use the fact that integrals are additive on their intervals. Mathematically, if c\in[a,b], then

\displaystyle\int_a^bg(x)\,\mathrm dx=\int_a^cg(x)\,\mathrm dx+\int_c^bg(x)\,\mathrm dx

So we have

\displaystyle2\int_2^6g(x)\,\mathrm dx=2\left(\int_2^8g(x)\,\mathrm dx-\int_6^8g(x)\,\mathrm dx\right)=2(12-(-3))=30

8 0
3 years ago
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