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3 years ago

I really need help can you help me plsssss

Mathematics

1 answer:

diamong [38]3 years ago

7 0

Answer:

12 grams

Step-by-step explanation:

800 x 15 is 12,000 in milligrams

12,000 milligrams is 12 grams

12,000 ÷ 1,000 is 12

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Determine the slope of the line that passes through the given points. (8, 1) and (8, -4)

Pie

This would be undefined

8 0

2 years ago

Answer fast! I will give brainiest

RideAnS [48]

Answer:

x= -5, 2

Step-by-step explanation:

5x=3x-10. 4x=2x+4

5x-3x= -10. 4x-2x=4

2x= -10. 2x=4

x= -5. x=2

5 0

2 years ago

Integrate 1 - x / x(x2 + 1) d x by partial fractions.

solniwko [45]

Answer:

$log x-\frac{log(x^{2}+1) }{2}-tan^{-1} x$

Step-by-step explanation:

step 1:- by using partial fractions

$[tex]\frac{1-x}{x(x^{2}+1) } =\frac{A(x^{2}+1)+(Bx+C)(x }{x(x^{2}+1) }$ ......(1)

step 2:-

solving on both sides

$1-x=A(x^{2} +1)+(Bx+C)x......(2)$

substitute x =0 value in equation (2)

1=A(1)+0

A=1

comparing x^2 co-efficient on both sides (in equation 2)

0 = A+B

0 = 1+B

B=-1

comparing x co-efficient on both sides (in equation 2)

-1 = C

step 3:-

substitute A,B,C values in equation (1)

now

$\\\int\limits^ {} \, \frac{1-x}{x(x^{2}+1) } d x =\int\limits^ {} \frac{1}{x} d x +\int\limits^ {} \frac{-x}{x^{2}+1 } d x -\int\limits \frac{1}{x^{2}+1 } d x$

by using integration formulas

i) by using $\int\limits \frac{1}{x} d x =log x+c........(a)\\\int\limits \frac{f^{1}(x) }{f(x)} d x= log(f(x)+c\\$ .....(b)

$\int\limits tan^{-1}x dx =\frac{1}{1+x^{2} } +C$ .....(c)

step 4:-

by using above integration formulas (a,b,and c)

we get answer is

$log x-\frac{log(x^{2}+1) }{2}-tan^{-1} x$

6 0

3 years ago

Length when found is the length at birth plus the product of age and yearly growth.

Brut [27]

Answer:

length when found = length at birth + (age × yearly growth)

8 0

2 years ago

Workers on the assembly line produce 4x + 6 boats each day. Which expression shows how many boats they produced in 12 days?

Annette [7]

We're going to assume that x = # of days.
Plug 12 in as x:
4 × 12 = 48
48 + 6 = 54
They produced 54 boats in 12 days.

7 0

3 years ago

Read 2 more answers