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3 years ago

HElP i nEEd thEm anSwERs

Mathematics

2 answers:

Anastasy [175]3 years ago

3 0

The first one is 8 1/12 and the second one is 7 2/5

GarryVolchara [31]3 years ago

3 0

Answer:

ans 1 is 97/12 or 8 1/12

and second is 5 3/5

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a_sh-v [17]

Answer:

Pls send the options so I can confirm the answer.

5 0

4 years ago

-3/5b+7+2/5b=19 please answer

ikadub [295]

Step-by-step explanation:

here your answer

above photo is your answer

7 0

2 years ago

g Farmer Violet wants to enclose one 990 square foot rectangular area of land using fencing. One side will use special fencing c

saw5 [17]

Answer:

Sides of the rectangular area:

x = 30 f

y = 33 f

Step-by-step explanation:

Let´s call x and y the sides of the rectangular area

A = x*y = 990 y = 990/x

The function cost is:

C = Costs ( sides x) + costs ( sides y )

Cost of sides x = 12*x + 10x

Cost of sides y = 10*y + 10 *y = 2*10*y = 20*y

C = 12*x + 10*x + 20*y = 22*x + 20*y

The function cost as function of x is:

C(x) = 22*x + 20*(990/y) = 22*x + 19800/x

Tacking derivative on both sides of the equation:

C´(x) = 22 + [ - 19800/x²]

C´(x) = 0 22 - 19800/x² = 0

Solving for x

22*x² - 19800 = 0

22x² = 19800

x² = 19800/22 = 900

x₁,₂ = ± 30 We dismiss negative root ( we never have negative lenghts)

Then x = 30 f

And y = 990 / 30 y = 33

To see if x = 30 is a minimum for function C(x) we evaluate the second derivative.

C´´(x) = 2*x* 19800/x⁴

C´´ (x) = 39600/x³ so C´´ is always greater than 0 then C (x) has a minimum at x = 30

Sides of the rectangular area are:

x = 30

y = 33

6 0

3 years ago

Write the equation of the line given two points on the line: (-3,-3) (-5,-3)

Arada [10]

Answer:

y= -3

Step-by-step explanation:

I'll assume it is a linear line (straight line).

Sense the y-value doesn't change and stays -3, the equation for the line would be y= -3

And just so you know, the slope of the line would be 0.

8 0

2 years ago

3x 2 + 7x - 5 name the terms

Ulleksa [173]

Answer:

Hello! Your answer would be, BELOW

Step-by-step explanation:

$-3x^{2} - 7x - 5$

A term is a single mathematical expression. It may be a single number (positive or negative), a single variable ( a letter ), several variables multiplied but never added or subtracted. Some terms contain variables with a number in front of them. The number in front of a term is called a coefficient.

Term's are 7x and 5

<u>Hope I helped! Ask me anything if you have questions! Brainiest plz. Hope You make a 100%! Have a nice day! -Amelia♥</u>

6 0

3 years ago