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3 years ago

WILL GIVE BRAINLIEST ANSWER THIS PLZ!

Mathematics

2 answers:

Nutka1998 [239]3 years ago

8 0

The answer is b, tell me if you don't understand.

masya89 [10]3 years ago

5 0

Hi !

9 < √85 < 10
9² < √85² < 10² it don't change the inequality because these 3 numbers are positif.
81 < 85 < 100

The inequality is true

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4x^(4)+8x^(3)-2x^(2) write as a product

True [87]

Answer:
764x
Step by step explanation:
4^4=256
8^3=512
2^2=4
256-4+512=764

765x

4 0

2 years ago

5 grams of chucknorrisidium created, decays at a half-life of 16,000,000 Need 1 gram for experiments. How long before the is 1 g

devlian [24]

Answer:

the time taken for the element to remain 1 gram is 38,400,000 unit.

Step-by-step explanation:

Given;

initial mass, m = 5 g

half life, t = 16,000,000 unit

The time taken for the element to remain 1 gram is calculated as;

mass remaining time

5 g 0

2.5 g 16,000,000

1.25 g 32,000,000

0.625 g 48,000,000

Interpolate to obtain the time at 1 gram;

1.25 g ---------------------------------- 32,000,000

1 g --------------------------------------------- x

0.625 g --------------------------------------- 48,000,000

$\frac{1.25 - 1}{1.25 - 0.625} = \frac{32,000,000 - x}{32,000,000 - 48,000,000} \\\\\frac{0.25}{0.625} = \frac{32,000,000 - x}{-16,000,000} \\\\-4,000,000= 20,000,000 - 0.625x\\\\0.625x = 20,000,000 + 4,000,000\\\\0.625x = 24,000,000\\\\x = \frac{24,000,000}{0.625} \\\\x = 38,400,000$

Therefore, the time taken for the element to remain 1 gram is 38,400,000 unit.

8 0

3 years ago

Lil help and hand here

antoniya [11.8K]

Well all you need to do to write the linear equation for this function. I assume you want to know, is that you must obtain 2 points, and calculate the slope, then place the info within the following form.

Y = mx + b
1 of the points has to be the y intercept, which can be obtained from the graph, and the other, any other point, which can also be the X intercept.

So, X intercept - (2,0)
Y intercept - (0,3).

Slope = y/X = 3-0/0-2
Slope = 3/-2 or -3/2.

Now put everything together in form:

Y = mx + b

Y = -3/2x + 3.

I believe this is the solution.

8 0

3 years ago

Read 2 more answers

John's father is 2 m tall how many centimeters is John's father (please let me know!)

Eddi Din [679]

There are 100 cm in a meter, so John's father would be 200 cm tall.

5 0

3 years ago

A random sample of 121 automobiles traveling on an interstate showed an average speed of 65 mph. From past information, it is kn

loris [4]

Answer:

95 percent confidence interval for μ is determined by

(60.688 , 69.312)

a) be the same

Step-by-step explanation:

Step (i):-

Given data a random sample of 121 automobiles traveling on an interstate showed an average speed of 65 mph.

The sample size is n= 121

The mean of the sample x⁻ = 65mph.

The standard deviation of the population is 22 mph

σ = 22mph

Step (ii) :-

Given The 95 percent confidence interval for μ is determined as

(61.08, 68.92)

we are to reduce the sample size to 100 (other factors remain unchanged) so

given The sample size is n= 100

The mean of the sample x⁻ = 65mph.

The standard deviation of the population is 22 mph

σ = 22mph

Step (iii):-

95 percent confidence interval for μ is determined by

$(x^{-} - 1.96\frac{S.D}{\sqrt{n} } , x^{-} + 1.96 \frac{S.D}{\sqrt{n} } )$

$(65 - 1.96\frac{22}{\sqrt{100} } , 65 + 1.96 \frac{22}{\sqrt{100} } )$

(65 - 4.312 ,65 +4.312)

(60.688 , 69.312) ≅(61 ,69)

This is similar to (61.08, 68.92) ≅(61 ,69)

Conclusion:-

it become same as (61.08, 68.92)

4 0

3 years ago