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horsena [70]
3 years ago
8

Surds see attached 20 points

Mathematics
2 answers:
Over [174]3 years ago
8 0

Answer:

5\sqrt{2} \\45

Step-by-step explanation:

just multiply

Alisiya [41]3 years ago
4 0

Answer:

a) 5√2

b) 135

Step-by-step explanation:

√5·√10 is equivalent to √50, which in turn is equivalent to √25·√2, or 5√2.

√27·√75 can be simplified by factoring:

√3·√9·√3√25, or (because √3·√3 = 3):

(3)(9)(5) = 135

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If the sample size is multiplied by 4, what happens to the standard deviation of the distribution of sample means?
Feliz [49]

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6 0
3 years ago
Find the geometric sequence.<br> 4, 12, 36, 108, ...
yulyashka [42]
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3 0
3 years ago
Read 2 more answers
Translate into an algebraic expression: If I travel d miles in h hrs downstream on a river with a current of c mph, what would m
xenn [34]

Answer:

The speed is still water is v = \frac{d}{h} - c.

Step-by-step explanation:

Dimentionally speaking, speed is distance divided by time. Since, the person is travelling downstream, absolute speed is equal to the sum of current speed and speed of the person regarding current. Both components are constant. That is:

c + v = \frac{d}{h}

Where:

c - Current speed, measured in miles per hour.

v - Speed of the person regarding current, measured in miles per hour.

d - Distance travelled downstream, measured in miles.

h - Time spent on travelling, measured in hours.

Speed in still water occurs when current speed is zero. Then, such variable is obtained after subtracting current speed on both sides of the expression. Hence:

v = \frac{d}{h} - c

The speed is still water is v = \frac{d}{h} - c.

4 0
3 years ago
Its basically just percents y=85(1.25)=
frosja888 [35]

Answer:

106.25

Step-by-step explanation:

y = 85(1.25) = 106.25

I'm not sure how to show the work, i just put it into a calculator

6 0
2 years ago
Y=4mx-7b solve for x
muminat
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8 0
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