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3 years ago

I GIVEEEEE BRAINLILST I NEED HELPPPP

Mathematics

2 answers:

Ira Lisetskai [31]3 years ago

7 0

:):):):):):):):):):):):)):):):):):):):)

Maru [420]3 years ago

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Expanded form a. 54896

Semenov [28]

54896=50,000+4000+800+90+6

6 0

3 years ago

Read 2 more answers

Can someone help, please ;)

8090 [49]

Answer:

7/12 would be ur answer

Step-by-step explanation:

6 0

3 years ago

A sphere with a diameter of 5 feet long is being painted. how much more paint would be needed to paint a sphere that has four ti

MArishka [77]

well, if the diameter is 5, thus its radius must be half that, or 2.5, and therefore, the radius of the one four times as much will be (4)(2.5).

Let's simply get their difference, since that'd be how much more is needed from the smaller to larger sphere.

$~\hfill \stackrel{\textit{surface area of a sphere}}{SA=4\pi r^2}\qquad \qquad r=radius~\hfill \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{\large difference of their areas}}{\stackrel{\textit{radius of (4)(2.5)}}{4\pi (4)(2.5)^2}~~ - ~~\stackrel{\textit{radius of 2.5}}{4\pi (2.5)^2}}\implies 100\pi -25\pi \implies 75\pi ~~ \approx ~~235.62~ft^2$

8 0

2 years ago

Lasers can provide highly accurate measurements of small movements. To determine the accuracy of such a laser, it was used to ta

sp2606 [1]

Answer: $p-value \approx 0.01$

Step-by-step explanation:

Hypothesis testing

$\\\left\{\begin{matrix}H_0 : \mu_0 =0\\ H_1: \mu_0 \neq 0\end{matrix}\right.\\$

For this problem, we need to use the t-student distribution to make inference about the data. We calculate the t-statistics as below:

$\bar{X} = 20\:\mu m\\S.E. = 60\:\mu m\\n=82\\t_{stat} = \frac{\bar{X}-\mu_0}{S.E/\sqrt{n}}=\frac{20-0}{60/\sqrt{82}}=3.0185$

Using a t-statistics table, or using the function TDIST in Microsoft Excel with $t_{stat} = 3.0185,\: df (degree\: of\: freedom) = 14 - 1 = 13$ with two-tailed distribution, we obtain $p-value \approx 0.01$ .

4 0

3 years ago

Find Sin A for the triangle. Round to the nearest ten-thousandths

lesantik [10]

Answer:

2.6

Step-by-step explanation:

4 squared - 3 squared =7

Square root 7 equals 2.6 to the nearest tenths

6 0

4 years ago