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Vlada [557]
3 years ago
14

Help me with 20 b, and 23, please! Thank you!

Mathematics
1 answer:
mixas84 [53]3 years ago
5 0

Answer:

20b.) -24˚C;

23.) -2820 feet.

Step-by-step explanation:

20b.) 12-4=8; 0-8×3=-24

23.) 0-7×60×2=-840;

-840+4×60×3=-120;

-120-9×60×5=-2820 feet

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92902 rounded to the nearest 10000
TEA [102]

Answer: The proper rounding of 92,902 is:

To the nearest 10,000: 90,000.

To the nearest 1,000: 93,000.

To the closest 100: 92,900.

Step-by-step explanation:

Rounding is a mathematical method used to approximate one number to another depending on whether you want to reach the tenth (10), hundredth (100), thousandth (1,000) or ten-thousandth (10,000), for this, we will take as an example the number given in the exercise: 92,902

If you were asked to round it to the nearest tenth, you will notice the last two numbers (02) these are closer to 0 than to the tenth 10, so 0 would be chosen and the rounded value would be 92,900.

In the case of rounding to the hundredth, you should look at the last three numbers (902), these are closer to the hundredth 900 than to the 000, so the value would be 92,900 again.

In the case of rounding to the thousandth, you should look at the last four numbers (2,902) which are closer to the thousandth 3,000 than 2,000, so the rounded value is 93,000.

I would like you to check this method with rounding to the ten thousandth, and tell me.

4 0
3 years ago
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A graph of 2 functions is shown below.
just olya [345]

Answer:

x = 1

Step-by-step explanation:

They intersect at ONE point.

4 0
3 years ago
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Researchers are interested in the effect of a certain nutrient on the growth rate of plant seedlings. Using a hydroponics growth
emmainna [20.7K]

Answer:

\bar{x}=61.98

Step-by-step explanation:

The sample mean \bar{x} is a point estimate of the population mean μ.

Given the heights of the 6 tomato plants sample below:

55.6, 59.4, 59.9, 62.9, 64.9, 69.2

Point Estimate,

\bar{x}=\dfrac{55.6+59.4+59.9+62.9+64.9+69.2}{6} \\=\dfrac{371.9}{6} \\\bar{x}=61.98

4 0
4 years ago
Line JK passes through points J(-4,-5) and K(-6,3). If the equation of the line is written in slope-intercept form, y-mx+b, what
Ksju [112]
y=mx+b \\ \\
(x,y)=(-4,-5) \hbox{ and } (x,y)=(-6,3) \\ \Downarrow \\
-5=-4m+b \ \ \ \ \ \ \ \ \ \ \ \ \ \ | \times (-3) \\
3=-6m+b \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |\times 2 \\ \\
15=12m-3b \\
\underline{6=-12m+2b} \\
21=-b \ \ \ \ \  \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \  |\times (-1) \\
\boxed{b=-21}

The value of b is -21.
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4 years ago
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I need help with b fast
frosja888 [35]
2/8=1/4=3/12=6/24=20/80=10/40
6 0
4 years ago
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