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Black_prince [1.1K]
3 years ago
10

Can somebody help me with this math question?

Mathematics
1 answer:
alukav5142 [94]3 years ago
3 0

Answer:

7 billion X 1.5%

Step-by-step explanation:

Im pretty sure this is not it, but at least i tried. And how is this high school material lol

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Please help me solve this problem -5= -32 please and thank you
Ymorist [56]

Answer: false

Step-by-step explanation:  Compare -5 and -32. They do not equal each other.

8 0
2 years ago
Lucy studies 1 hour less than twice the number of hours a week that rose studies. Lucy studies for 11 hours a week. How many hou
Lana71 [14]

Answer:

6.

Step-by-step explanation:

Lucy studies one less (-1) than twice the number of hours a week that rose studies (2 * R), lucy studies 11 hours a week. What we do is add 1 hour to lucy's 11, to get 12, then divide by 2 as lucy studies twice the hours. 12 / 2 = 6.

3 0
3 years ago
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Why isn't a dilation considered a rigid transformation?
dexar [7]
It's not rigid because dilations (scale factor not equal to 1) change the length of the segments, or the distances between the points. You'll get a similar figure but it won't be congruent. For example, if the scale factor is 3, then the distances will be three times as large; or the lengths will be 3 times as long. 

To be "rigid", the lengths must be kept the same. In contrast, a reflection is rigid because the distances are kept the same. The only thing changing is the orientation (clockwise to counter-clockwise, or vice versa).
7 0
3 years ago
Scientists want to estimate the mean weight of mice after they have been fed a special diet. From previous studies, it is known
Assoli18 [71]

Answer: n = 267

Step-by-step explanation: <u>Margin</u> <u>of</u> <u>Error</u> shows the percentage that will differ the result you get from the real population value or, in other words, is the range of values in a confidence interval.

It can be calculated as

margin of error = z\frac{s}{\sqrt{n} }

in which

z is z-score related to the confidence interval, which is this case is 1.96;

s is standard deviation;

n is the number in a sample;

So, the number of mice must be:

margin of error = z\frac{s}{\sqrt{n} }

0.6=1.96\frac{5}{\sqrt{n} }

\sqrt{n}=\frac{1.96*5}{0.6}

\sqrt{n}=16.33

n = 267

<u>For the margin of error with 95% confidence interval be 0.6, it is needed </u><u>267 mice</u><u>.</u>

6 0
2 years ago
What is the y-value of the solution to the system 9x+5y=8 <br> 3x-y=4
Mekhanik [1.2K]

Answer:

y=-1/2

Step-by-step explanation:

9x+5y=8

9x-3y=12

so 8y= -4

y=-1/2

if my answer helps please mark as brainliest

5 0
3 years ago
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