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3 years ago

7

Blake has b baseball cards. His aunt gave him more cards, increasing his total number of cards by 25%. Which expression represen

ts Blake’s total number of cards now

2 answers:

Vera_Pavlovna [14]3 years ago

6 0

.25b+ b is the answer to ur question

Keith_Richards [23]3 years ago

3 0

B + ( b x 0.25) = X
this should work

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If 1900 square centimeters of material are available to make a box with a square base and an open top, find the largest possible

Evgen [1.6K]

Answer:

Volume = $7969$ cubic centimeter

Step-by-step explanation:

Let the length of each side of the base of the box be A and the height of the box be H.

Area of material required to make the box is equal to is $A^2 + 4*A*H.$

$A^2 + 4*A*H = 1900$

Rearranging the above equation, we get -

$`H = \frac{(1900 - A^2)}{(4*A)}$

Volume of box is equal to product of base area of box and the height of the box -

$V = A*A* H$

Substituting the given area we get -

$\frac{A^2*(1900 - A^2)}{4A} = \frac{(1900*A - A^3)}{4}$

For maximum volume

$\frac{dV}{dA} =0$

$\frac{ 1900}{4} - \frac{3*A^2}{4} = 0$

$A^2 = \frac{1900}{3}$

Volume of the box

= $\frac{\frac{1900}{3}*(1900 - \frac{1900}{3}) }{4 * \sqrt{\frac{1900}{3} } }$

= $7969$ cubic centimeter

3 0

3 years ago

Suppose Amanda wants to have $800,000 in her IRA at the end of 30 years. She chooses to invest in an annuity that pays

VARVARA [1.3K]

Her IRA interest at the end of 30 years is mathematically given as

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<h3> IRA interest </h3>

Question Parameters:

N = 30
PV = 0
rate = 5%
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Generally the equation for the payment function on excel is mathematically given as

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Therefore, inputting our functions

A=PMT(rate, nper, pv, [fv], [type])

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A=PMT(5%, 30, 0, [800000], [])

A = 12,041.1481

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interest = 800,000 - 30*12,041.1481

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3 years ago

Help me with this thank you

alexgriva [62]

(-36x^4y+144x²y^6) / (-4x²y) =
36xy*(x³+4xy^5) / (-4x²y) =
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3 years ago

Describe the possible values for x and y when ∣x − y ∣ > 0. What does it mean when ∣x − y ∣ = 0? Can ∣x − y ∣ < 0? Explain

Vilka [71]

The possible values for | x-y | > 0 is any number above 0. x must be greater than y. When | x-y | = 0, That means that x and y are equal to each other. | x-y | can not be less than 0, but it can equal 0.

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3 years ago

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Liono4ka [1.6K]

Answer:

7/11

Step-by-step explanation:

$- 11 = \frac{ - 7}{y}$

$= > - 11y = - 7$

$= > y = \frac{ - 7}{ - 11}$

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3 years ago