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3 years ago

Brainy heart rate 190 per minute her heart rate is 70% of her MHR

Mathematics

1 answer:

Akimi4 [234]3 years ago

7 0

Answer:

120

Step-by-step explanation:

trough dependent sarcasm

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The standard deviation of the distribution of sample means is _______.

luda_lava [24]

Answer:

Standard error

Step-by-step explanation:

The standard deviation of the distribution of sample means is called the standard error of the means.

It is denoted by: $\sigma_{\bar X}$

The standard error is calculated using the formula: $\sigma_{\bar X}=\frac{\sigma}{\sqrt{n} }$

where n is the sample size and $\sigma$ is the population standard deviation.

6 0

4 years ago

PLEASE HELP..MATH 8TH GRADE

jolli1 [7]

Answer. z = ± √10 = ± 3.1623

8 0

3 years ago

Read 2 more answers

The volume of a sphere is 1928π m3 . What is the surface area of the sphere to the nearest tenth?

Rufina [12.5K]

$\bf \textit{volume of a sphere}\\\\
V=\cfrac{4}{3}\pi r^3\qquad \begin{cases}
r=radius\\
------\\
V=1928\pi 
\end{cases}\implies 1928\pi =\cfrac{4}{3}\pi r^3
\\\\\\
1928\pi =\cfrac{4\pi r^3}{3}\implies \cfrac{3\cdot 1928\pi }{4\pi }
=r^3\implies 1446=r^3
\\\\\\
\sqrt[3]{1446}=r\\\\
-------------------------------\\\\
\textit{surface area of a sphere}\\\\
S=4\pi r^2\qquad r=\sqrt[3]{1446}\implies S=4\cdot \pi \cdot \sqrt[3]{1446^2}$

8 0

3 years ago

Read 2 more answers

F(x) 2 square root -x^2+10 x what’s the domain

SSSSS [86.1K]

The domain of the function are all real numbers greater than 10

<h3>Domain of a function</h3>

Domain are values of the independent variables for which the function exist.

Given the function below;

$f(x)=2\sqrt{-x^2+10x}$

For the function to exist, then;

-x^2+10x = 0

-x^2 = -10x

x = 10

Hence the domain of the function are all real numbers greater than 10

Learn more on domain here: brainly.com/question/26098895

#SPJ1

4 0

2 years ago

What are possible rational roots of polynomial function 0= 3x^8 + 11x^5+4x+6

stealth61 [152]

Answer:

1,-1,2,-2,3,-3,6,-6, 1/3, -1/3, 2/3, -2/3

Step-by-step explanation:

Factors of the constant which are:

+1,-1,+2,-2,+3,-3,+6,-6

Also, these divided by the factors of the leading coefficient (3 in this case)

Factors of 3 are 1 & 3

Dividing by 1 will give the same values

Dividing by 3:

1/3,-1/3,2/3,-2/3,3/3,-3/3,6/3,-6/3

1/3,-1/3,2/3,-2/3,1,-1,2,-2

Distinct possibilities:

1,-1,2,-2,3,-3,6,-6, 1/3, -1/3, 2/3, -2/3

6 0

3 years ago