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3 years ago

ILL GIVE BRAINLIEST (EASY STUFF)

Mathematics

2 answers:

rjkz [21]3 years ago

8 0

Answer:

THIS HERE PLZ I NEEEEEEEED BRAINLIEST

Step-by-step explanation:

7 multiplied by 11 is 77. And to get 462, (and based on the given information), we can conclude that it is 3*2*7*11.

insens350 [35]3 years ago

3 0

7 multiplied by 11 is 77. And to get 462, (and based on the given information), we can conclude that it is 3*2*7*11.

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Softa [21]

Answer:

Step-by-step explanation:

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3 years ago

The temperature inside a certain industrial machine at time t seconds after startup, for 0 < t < 10, is given by h(t) = 42

frutty [35]

Answer:

$t= \frac{125}{38} s$

Step-by-step explanation:

We are given the temperature inside the machine from startup until 10 seconds later, the formula is:

$h(t)= 42 \cdot t +1 - 4\cdot t +2 (degrees \, C)$

We want to know at what time t the temperature inside the machine will be equal to 128 °C.

So we set:

$h(t)=128$

$42\cdot t+1-4\cdot t+2=128$

Now, we rearrange the equation to keep terms with t on the left hand side and terms without t on the right hand side

$42\cdot t-4\cdot t=128-1-2$

and we simplify:

$(42-4)\cdot t= 128-2-1= 125$

$38 \cdot t = 125$

now it's easy to solve for t:

$t=\frac{125}{38}$

And thus we arrive to the solution.

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3 years ago

What does A=2nc solve for c

aleksklad [387]

Answer:

c=A/2n

Step-by-step explanation:

A=2nc

c=A/2n

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3 years ago

Which type of statistical graphic uses bars to describe the data?

raketka [301]

Answer:

A histogram

Step-by-step explanation:

This type of graph is used with quantitative data. Ranges of values, called classes, are listed at the bottom, and the classes with greater frequencies have taller bars.

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3 years ago

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An IQ test is designed so that the mean is 100 and the standard deviation is 19 for the population of normal adults. Find the sa

sleet_krkn [62]

We use the formula:
x± s <span>t_<span>(1−c)/2 / </span></span>√n = 5

(1 - c)/2 = (1 - 0.95) / 2 = 0.025
Using the t score calculator at this value, at the 95% confidence internval,
t = 0.5080, So
100 - 19(0.5080) / √n = 5
Solving for n
n = 97

a) 97
b) yes

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3 years ago

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