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Anvisha [2.4K]
3 years ago
10

WILL MARK BRAINLIEST IF YOU ARE CORRECT!

Mathematics
2 answers:
almond37 [142]3 years ago
4 0
Mmmmmmmmmmmmmmmmmhvggggghjk
alina1380 [7]3 years ago
3 0
<h3>Answer: Choice C</h3>

There is sufficient evidence to support the claim that the standard deviation of time all women spend washing their hair in the morning is 15 seconds

=================================================

Explanation:

First focus on "You find the initial conclusion of your test fails to reject the null hypothesis"

The key thing to pull out from that is "fail to reject the null hypothesis". Failing to reject means we basically "accept", more or less, the null. We have no other choice until more data comes along to reject the null.

The claim is " the standard deviation of time all women spend washing their hair in the morning is 15 seconds." which is where the null hypothesis is made. In terms of symbols, we would write \sigma = 15. The alternate hypothesis is \sigma \ne 15. The symbol \sigma is the greek letter sigma that represents the population standard deviation.

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Need to find the constant
evablogger [386]

time, t = 50

rate, r = 40

number of words, w

t = w/r

=》 50 = w/ 40

=》 w = 50 × 40 = 2000words

4 0
2 years ago
When is hurricane season in the United States?
Marysya12 [62]
The answer would definitely be between June-November, because the US is where my aunt lives, and she nearly died! :0
7 0
3 years ago
What is the solution to the equation sqrt5X-7= sqrt3X+5?<br> x = 1<br> x = 6<br> x = 12<br> x = 24
IgorC [24]

Answer:

X=6

Steps are in the picture

4 0
3 years ago
Molar mass of FeCl3, Co(NO3)2, C4H10O, and Cu(NO3)2? Show work.
N76 [4]

Molar mass of FeCl₃ 162.204 g/mol

Molar mass of  C₄H₁₀O is 74.1212 g/mol

Molar mass of Cu(NO₃)₂ is 187.5594 g/mol

<u>Step-by-step explanation:</u>

Molar mass is also termed as molecular mass of the compound. So it is the measure of the amount of mass present in the given molecule. It can be obtained by adding the products of number of atoms with their molecular mass.

For example, in order to find the molar mass of FeCl₃, the molecular mass of Fe is noted as 55.845 g/mol and the molecular mass of Cl is noted as 35.453 g/mol.

As FeCl₃ contains one atom of Fe and 3 atoms of Cl, then the

Molar mass = (Number of Fe atoms × Molecular mass of Fe) + ( Number of Cl atoms × Molecular mass of Cl)

Molar mass of FeCl₃ = (1×55.845)+(3×35.453)=162.204 g/mol.

Similarly, the molar mass of C₄H₁₀O will be

Molar mass = (4×Mass of C) + (10×Mass of H) + (1 × Mass of O)

Molar mass = (4×12.0107)+(10×1.00784)+(1×16)=74.1212 g/mol

Then the molar mass of Cu(NO₃)₂ will be

Molar mass = (1× Mass of Cu) + (2×Mass of N)+(6×Mas of Oxygen)

Molar mass = (1×63.546)+(2×14.0067)+(6×16)

Molar mass = 187.5594 g/mol

5 0
2 years ago
Plz help ASAP! I will mark brainliest if correct
MaRussiya [10]
A = L^2
A = L^2 = 2^2 + 4^2 (Pythagorean’s theorem)
A = L^2 = 20
Therefore the area of the square is 20 units square.
5 0
3 years ago
Read 2 more answers
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