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4 years ago

Pls help me i really need it

Mathematics

2 answers:

Cerrena [4.2K]4 years ago

8 0

Answer:

Step-by-step explanation: SA= Arec1*2+Arec2*2+Arec3*2

SA=l*w*2+l*w*2+l*w*2

SA=4*14*2+4*5*2+5*14*2

and you do the math

Kamila [148]4 years ago

6 0

Answer:

The answer would be C

Step-by-step explanation:

have a wonderful day, please mark brainlest and thank me.... I do flvs as well

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X^2-8x+21=0 quadratic formula

Free_Kalibri [48]

Answer:

x^{2}-8x+21=0

Step-by-step explanation:

it's on the picture hope it helps

3 0

2 years ago

Find the gradients of the lines A and B. a) Gradient of A is __ b) Gradient of B is __

Shkiper50 [21]

Answer:

Kkķķkkkkkkkkkkkkkk

Step-by-step explanation:

6 0

3 years ago

David express company was asked to deliver 325 boxes of apples. according the rule, the delivery fee is

Andrew [12]

Answer:

22 boxes were lost. Look for the happy squirrels.

Step-by-step explanation:

Let x be the number of lost boxes. David Express should expect to receive $25 for each of the 325 boxes of apples. That means:

($25)*(325) = $8125

The loss of a box means that the delivery fee would be forfeited, which would amount to: x*($25)

But a compensation fee of $75/box also applies, so the total loss to the income would be x*($25+$75) or x*($100). This would be subtracted from the total expected income of $8125:

Resulting Income: $8125 - ($100)x = $5925

$8125 - ($100)x = $5925

-100x = -2200

x = 22 boxes were lost. Zounds! [A metric term for %$%^&]

===================

Check: Does the loss of 22 of the 325 boxes result in a total payment of $5925?

Delivered boxes: (325 - 22) = 303 boxes delivered. 303*$25 = $7575

Penalty of $75 per lost box: 22*($75) = $1650

Result: $7575 - $1650 = $5925 YES

3 0

2 years ago

16) The revenue (in thousands of dollars) from producing x units of an item is modeled by

lyudmila [28]

Answer:

Part 16) The marginal revenue is $4,000

Part 17) The marginal average cost function is (70x+41)

Step-by-step explanation:

Part 16) we know that

The marginal revenue function is simply the derivative of the revenue function

we have

$R(x)=5x-0.0005x^{2}$

Find $\frac{dR(x)}{dx}$

$R'(x)=5-0.001x$

For x=1,000 units

substitute

$R'(x)=5-0.001(1,000)$

$R'(x)=5-1=\$4$

Remember that the units is in thousands of dollars

therefore

The marginal revenue is $4,000

Part 17) we know that

The marginal average cost function is simply the derivative of the average cost function

we have

$C(x)=(5x+3)(7x+4)$

Applying the distributive property

$C(x)=35x^2+20x+21x+12$

$C(x)=35x^2+41x+12$

Find the derivative

$C'(x)=70x+41$

therefore

The marginal average cost function is (70x+41)

6 0

3 years ago

3 (Picture) CONVERGENT AND DIVERGENT SERIES PLEASE HELP!!

scoundrel [369]

Answer:

Option C

Step-by-step explanation:

The sum of finite geometric sequence states the following:

$s_{n} =$ Σ $a_{i} r^{i-1} = a_{1}(\frac{1-r^{n} }{1-r} )$

In this case, $r = \frac{900}{1500} = \frac{9}{15} = \frac{3}{5}$ , and $i = 10$

Therefore,

$1500( 1 + \frac{3}{5} + (\frac{3}{5})^{3} + (\frac{3}{5})^{4} + (\frac{3}{5})^{5} + (\frac{3}{5})^{6} + (\frac{3}{5})^{7} + (\frac{3}{5})^{8} + (\frac{3}{5})^{9}) = 1500( 2,4848) = 3.727, 3251$ ≈ $3.727$

Therefore, the correct answer is the option C

5 0

3 years ago