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3 years ago

Simplify √20 x √5 10 4√5 √10

Mathematics

2 answers:

nlexa [21]3 years ago

5 0

Answer: 10

Step-by-step explanation:

natali 33 [55]3 years ago

3 0

10
20*5=100
Root of 100 is 10

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Eight students ran a 180-meter course during their physical education class. The chart shows the time it took each student to co

lakkis [162]

Answer:

Step-by-step explanation:

Speed of student 1 = 180/30= 6 m/sec

speed of student 2= 180/32= 5.62 m/sec

speed of student 3= 180/33= 5.45 m/sec

speed of student 4= 180/35= 5.14 m/sec

speed of student 5= 180/37= 4.86 m/sec

speed of student 6= 180/38= 4.73 m/sec

speed of student 7= 180/40= 4.5 m/sec

speed of student 8= 180/32= 4 m/sec

average speed is = (6+5.62+5.45+5.14+4.86+4.73+4.5+4)/8

hence, average speed is= 5.04

hence, the average speed of student 1 = 6m/sec

how much faster is average speed of student 1 than average speed= 6- 5.04 = 0.96

hence, average speed of student 1 is 0.96 m/sec more thanthe average speed.

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3 years ago

Plz hurry!!!!!!! How do you find it?

Colt1911 [192]

Answer:

hope you can see it

the law of cosine is

c2 =a2+b2-2abcos(c)

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3 years ago

While shopping for a gift you find the perfect video game on sale for 51% off its original $70.55 price. How much will you pay f

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4 years ago

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2x + 3y= 39 <br><br> solve fir both x anddd y

Readme [11.4K]

X=15
Y=3

2(15)=30
3(3)=9
30+9=39

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3 years ago

The mean of a sequence of n numbers is m. If we split the sequence into two sequences of lengths n1 and n2 and compute their mea

Furkat [3]

The mean of a sequence of numbers is the average.

The true statement is: $\mathbf{mn = m_1 \times n_1 + m_2 \times n_2}$

The given parameters are:

$\mathbf{Mean = m}$

$\mathbf{Size = n}$

The mean of a dataset is calculated as:

$\mathbf{Mean = \frac{\sum x}{Size}}$

So, we have:

$\mathbf{m = \frac{\sum x}{n}}$

Multiply both sides by m

$\mathbf{\sum x = mn}$

When the sequence is split into two, we have:

$\mathbf{\sum x_1 = m_1\times n_1}$

$\mathbf{\sum x_2 = m_2\times n_2}$

Where:

$\mathbf{\sum x_ = \sum x_1 + \sum x_2}$

So, we have:

$\mathbf{mn = m_1 \times n_1 + m_2 \times n_2}$

Hence, the true statement is: $\mathbf{mn = m_1 \times n_1 + m_2 \times n_2}$

Read more about mean and averages at:

brainly.com/question/16217700

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3 years ago