1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
VashaNatasha [74]
3 years ago
8

Helpp plz very stuck

Mathematics
2 answers:
Anastasy [175]3 years ago
6 0
78.07  your very welcome sir

fenix001 [56]3 years ago
3 0
He would have 78.09. Welcome
You might be interested in
A limnologist wishes to estimate the mean phosphate content per unit volume of lake water. It is knownfrom studies in previous y
telo118 [61]

Answer: 68

Step-by-step explanation:

As per given , we have

Population standard deviation : \sigma=4

Critical value for  90% confidence interval =z_{\alpha/2}=1.645

Margin of error : E= 0.8 milligrams

The formula to find the sample size is given by :-

n=(\dfrac{z_{\alpha/2}\ \sigma}{E})^2

i.e. n=(\dfrac{(1.645)(4)}{0.8})^2=(8.225)^2

=67.650625\approx68

Hence, the limnologist must analyze 68 samples.

6 0
4 years ago
If you need any help with fractions I'm here to help. This is for 4th grade and less.
Vlad [161]

Ok, thanks for your support, You're amazing!!!!! :)

4 0
3 years ago
Read 2 more answers
. What is the volume of a storage box that is 18 inches long, 6 inches high, and 10 inches wide? Write the formula and the corre
Serggg [28]

Answer:

1080 in.³

Step-by-step explanation:

The answer is in cubic inches, not inches.

V = LWH

V = (18 in.)(10 in.)(6 in.)

V = 1080 in.³

6 0
3 years ago
What is 10+10 double 10+45 and 15 equal
seraphim [82]

Answer:

the question is weird but heres what i think

Step-by-step explanation:

10+10=20

20x10+45

245+30=275

5 0
3 years ago
Read 2 more answers
Find the square of the number of (-2/5) i will give something really good if you answer
rewona [7]

Answer:

4/25

Step-by-step explanation:

(-2/5) ^2

This means

( -2/5) * (-2/5)

4/25

7 0
3 years ago
Read 2 more answers
Other questions:
  • Leo invested $1900 in an account with annually compounded interest. After 3 years, he had $2275 in the account. What was the int
    14·1 answer
  • Which describes the cross section of a cube that passes through the vertices A, B, C, and D shown below?
    7·2 answers
  • Complete the sequence, <br>13, 14, 27, 41,<br><br>​
    11·1 answer
  • Show that (x+1) is a factor of f(x)=19x^42+18x-1
    6·1 answer
  • In order to solve the inequality -1/4 x &gt; 8, which of the following steps must be done?
    14·1 answer
  • D(t) = 50 – 23 sin (11 (t +0.23)).
    5·1 answer
  • The 4 - pack is priced at £2.04
    7·1 answer
  • What is the answer if u know it?​
    9·2 answers
  • Sum points lol. I'm being generous :)
    14·1 answer
  • If PQRS is a rhombus,which statement must be true? Check all that apply.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!