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daser333 [38]
3 years ago
8

Marcus is 1.5 meters tall. His sister is 0.1 meter taller than Marcus. Their father is 0.2 meter taller than his sister. How tal

l is their father?
Mathematics
1 answer:
Natasha2012 [34]3 years ago
3 0
The answer is 1.8 m....
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Use the distributive property to find the product
dalvyx [7]

Answer:

1st one: -24a-6b-36c

2nd one: 14mn-12m

Step-by-step explanation:

1st one: Multiply '-6' w/ '4a', 'b', and '6c'

2nd one: Multiply '2m' w/ '7n' and '-6'

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3 years ago
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A dairy scientist is testing a new feed additive. She chooses 13 cows at random from a large population of cows. She randomly as
mina [271]

Answer:

Step-by-step explanation:

Given that a dairy scientist is testing a new feed additive. She chooses 13 cows at random from a large population of cows. She randomly assigns nold = 8 to get the old diet, and nnew = 5 to get the new diet including the additive.

From the data given we get the following

           N       Mean      StDev     SE Mean

Sample   1    8           43       5.1824 1.832

Sample   2   5           73     21.0832 9.429

df = 11

Std dev for difference = 13.3689

a) Yes the two are independent.  The two sets of cows randomly chosen are definitely independent. Paired means equal number should be there and homogeneous conditions should be maintained.

b) Enclosed

c) Comparison of two means is the test recommended here.  Because independent samples are used.\

d) Test statistic= -3.1233

(because of unequal variances we use that method)

95% confidence interval =  ( -56.6676 , -3.3324 )

p value <0.05 our alpha

So reject null hypothesis.

The two means are statistically significantly different.

3 0
3 years ago
Simplify square root of negative 48.
kvv77 [185]
We want to simplify √(-48).

Note that
i² = -1 by definition.
Therefore
\sqrt{-48} =  \sqrt{i^{2}.16.3} = \sqrt{i^{2}}  \sqrt{16}  \sqrt{3} =4i \sqrt{3}

Answer: c.  4i \sqrt{3}

3 0
3 years ago
Is the following shape a square? How do you know?
Troyanec [42]

Answer:

B

Step-by-step explanation:

it is a rectangle. each opposite sides ARE parallel but not every side is equal like a square so B

8 0
3 years ago
Can you solve this problem plz?
Andre45 [30]

Answer:

First, we are going to find the sum of their age. To do that we are going to add the age of Eli, the age Freda, and the age of Geoff:


The combined age of Eli, Freda, and Geoff is 40, so the denominator of each ratio will be 40.


Next, we are going to multiply the ratio between the age of the person and their combined age by £800:

For Eli: 

For Freda: 

For Geoff: 


We can conclude that Eli will get £180, Freda will get £260, and Geoff will get £360.

Step-by-step explanation:


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3 years ago
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