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Fynjy0 [20]
3 years ago
8

Y/2=2/5 solve one step equation?

Mathematics
1 answer:
neonofarm [45]3 years ago
5 0

Step-by-step explanation:

y/2=2/5

5y=4

y=4/5

so, y=4/5

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A biologist was interested in determining whether sunflower seedlings treated with and an extract from Vinca minor roots resulte
Aleksandr-060686 [28]

Answer:

Kindly check explanation

Step-by-step explanation:

H0 : μ = 15.7

H1 : μ < 15.7

This is a one sample t test :

Test statistic = (xbar - μ) ÷ (s/√(n))

n = sample size = 33

Using calculator :

The sample mean, xbar = 15.41

The sample standard deviation, s = 0.419

Test statistic = (15.41 - 15.70) ÷ (0.419/√(33))

Test statistic = - 3.976

Using the Pvalue calculator :

Degree of freedom, df = n - 1 ; 33 - 1 = 32

Pvalue(-3.976, 32) = 0.000187

Decison region :

Reject H0 if Pvalue < α

Since Pvalue < α ; we reject H0

There is significant evidence to conclude that the true average height of the seedlings treated with an extract from Vinca minor roots is less than 15.7 cm.

4 0
2 years ago
Carmen participated in a read-a-thon. Mr.Cole pledged $4.00 per book and gave Carmen $44.How many books did Carmen read?
alex41 [277]
She read 11 books because 44 divided by 4 its 11$
6 0
3 years ago
Which of the following number sentences is an example of the identity property of addition?
Paladinen [302]

Answer:

Option C is correct

8 + 0 = 8

Hope this helps!

:)

3 0
3 years ago
Find the Dot Product if u=8i-7j and v=3i-4j?
Feliz [49]

Answer:

52

Step-by-step explanation:

If u=(a1i+b1j)=(a1,b1) and v=(a2i+b2j)=(a2,b2), then the dot (scalar) product is:

u.v=(a1,b1).(a2,b2)

a1b1+a2b2

 u.v=(8,-7).(3,−4)

(8)(3)+(-7)(−4)

24+28=52

4 0
3 years ago
Find the slope of the line graphed
Andrej [43]

Answer:

I believe it is 2

7 0
2 years ago
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