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
aleksandr82 [10.1K]
3 years ago
12

Can you plz help I don’t get it

Mathematics
1 answer:
salantis [7]3 years ago
4 0

Answer:

57

Step-by-step explanation:

You might be interested in
Substance X is found in the bloodstream of humans. A random sample of 75 males had a mean content of 28 ppm of Substance X in th
Mashcka [7]

Answer:

H0: u1 - u2 = 0

H1: u1 - u2 ≠ 0

Step-by-step explanation:

This question requires us to state the hypothesis to be used for this test to know if males and females have the same amount of substance X. I have gone further to also calculate the test statistics too.

Null hypothesis:

H0: u1 - u2 = 0

Alternative hypothesis:

H1: u1 - u2 ≠ 0

X1 = 28, sd1 = 14.1, n1 = 75

X2 = 33, sd2 = 9.5, n2 = 50

We have a 2 tailed test

Alpha = 1-0.8812

= 0.1188

Critical value = 1.56

If z<-1.56 or z>1.56

Reject null hypothesis

Test statistic

= (28-33)/14.1²/75 + 9.5²/50

= -2.37

Therefore we reject the H0 because -2.37 is less than -1.56

5 0
3 years ago
75= 4(2)^x
Arlecino [84]

Answer:

x = 4.22881869...

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

x = − 2 + ln ( 75 ) ln ( 2 )

7 0
3 years ago
If ƒ (x ) = 2x 2 + 3, find ƒ (3).<br> A.31 <br> B.15<br> C.21 <br> D.39
nlexa [21]
F(3)=2*3²+3=18=3=21
C is the answer
3 0
4 years ago
Read 2 more answers
8y-3=6y 17 step by step to solve this equation.
antiseptic1488 [7]


8y-3=6y+17

add 3 on both sides

8y=6y+20

-6y on both sides

2y=20

divide by 2 on both sides

y=10


4 0
3 years ago
Kai and aaron ate 5/6 of pizza . explain how you can tell what fraction of the pizza is left
NeX [460]
Hi there!

Since 1 - 5/6 = 1/6, 1/6 of the pizza is left. 

Hope this helps!
5 0
4 years ago
Other questions:
  • How do I factorise t³-3t-2
    8·2 answers
  • 5x2?. Is equal to 6*2
    15·2 answers
  • A mixture of acid and water is 35% acid if the mixture contains a total of 40 liters how many liters of pure acid are in the mix
    10·1 answer
  • Find the height of the cylinder.
    8·2 answers
  • Helpppp with homework
    14·2 answers
  • Which set best represents the positive integers?
    7·1 answer
  • Is this true or false? Pls help a dumb person out
    7·2 answers
  • Help please i will thank you a lot.
    9·1 answer
  • Can you always put two triangle together to make a rectangle? Explain why or why not.
    15·1 answer
  • Which of the following will result in a rational answer?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!