2 years ago

H14

Mathematics

1 answer:

lys-0071 [83]2 years ago

4 0

uh I don't unerstand that :(

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Which expressions are equivalent to 4(4a+5)?

goldfiish [28.3K]

B. 4(4a+5)
4 would multiply all what’s in the bracket
16a +20

3 0

3 years ago

Simplify a-{b-[c-(d- e) - 1-g}.

hoa [83]

a−b+c−d−g+2.718282 is the solution for this equation.

8 0

4 years ago

Select the table representing a linear function. (Graph them if necessary.)

Neporo4naja [7]

Answer:

Option C

Step-by-step explanation:

the linear equation y = 2x+10 matches with option c

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3 years ago

Find the dimensions of a rectangle with area 3 square meters whose perimeter is as small as possible.

Sveta_85 [38]

Answer:

The perimeter is minimum for Length and width both are $\sqrt3$ .

Step-by-step explanation:

Area, A = 3 square metre

Let the length is L and width is W.

Area = L W

3 = L W.....(1)

The perimeter is given by

P = 2 (L + W)

Substitute the value of from (1)

$P = 2 \left ( L +\frac{3}{L} \right )\\\\P = 2 L + \frac{6}{L}\\\\\frac{dP}{dL} = 2 - \frac{6}{L^2}\\\\Now\\\\\frac{dP}{dL}=0\\\\2 - \frac{6}{L^2} = 0\\\\L = \sqrt 3, W = \sqrt 3$

Now

$\frac{d^2P}{dL^2}=\frac{12}{L^3}\\$

It is alays positive, so the perimeter is minimum.

5 0

3 years ago

A-1 rental charges $35 plus $6 per hour to rent a mini-loader, while BilJax charges $15 plus $8 per hour. What does the solution

WITCHER [35]

Answer:

5 hours and rental would be 45

Step-by-step explanation:

15+6x=5+8x

15-5=8x-6x

10=2x

x=10/2

x=5

so in 5 hours rental would be

15 + 6*5= 45

5 + 8*5 =45

Hope that helps!:)

4 0

3 years ago