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3 years ago

What’s the answer my phone calculator isn’t working

Mathematics

1 answer:

zubka84 [21]3 years ago

5 0

Answer:

4.33

Step-by-step explanation:

If you don't have the cube root function in your calculator, u can chose a choice instead and cube the value.

9x9 is already 81, hence 9x9x9 > 81

27 x 27 Is definitely more than 81

Hence the only reasonable answer is 4.33

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6x-+5y=-15 in slope intercept form

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6x+5y=-15

5y=-15-6x

y=(-15-6x)/5

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2 years ago

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When you cut a pyramid parallel to the base, meaning side to side, what 2D shape is created by the cross section ?

Black_prince [1.1K]

Answer:

triangle

Step-by-step explanation:

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Find the equation in slope-intercept form that describes a line through (4, –2) with slope –3

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B or D is the answer

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3 years ago

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Reil [10]

Answer:

150

Step-by-step explanation:

The sum of the angles of a quadrilateral are 360. Let x be the unknown angle

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2 years ago

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1.Arsenic-74 is used to locate brain tumors. It has a half-life of 17.5 days. 90 mg wereused in a procedure. Write an equation t

Sophie [7]

$1)\text{ }N_t\text{ = 90\lparen}\frac{1}{2})^{\frac{t}{17.5}}$

2) 5.625 mg will be left

Explanation:

1) Half-life = 17.5 days

initial amount of Arsenic-74 = 90 mg

To get the equation, we will use the equation of half-life:

$\begin{gathered} N_t\text{ = N}_0(\frac{1}{2})^{\frac{t}{t_{\frac{1}{2}}}} \\ where\text{ N}_t\text{ = amount remaining} \\ N_0\text{ = initial amount} \\ t_{\frac{1}{2}\text{ }}\text{ = half-life} \end{gathered}$ $N_t\text{ = 90\lparen}\frac{1}{2})^{\frac{t}{17.5}}$

2) we need to find the remaining amount of Arsenic-74 after 70 days

t = 70

$\begin{gathered} N_t=\text{ 90\lparen}\frac{1}{2})^{\frac{70}{17.5}} \\ N_t\text{ = 5.625 mg} \end{gathered}$

So after 70 days, 5.625 mg will be left

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1 year ago