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Vesnalui [34]
3 years ago
6

An expression is written. 3x2 + 5xy+ y? If x = 4 and y = 2, what is the value of the expression ?​

Mathematics
1 answer:
mestny [16]3 years ago
3 0
3x^2 + 5xy + y, for X = 4 and Y = 2
= 3(4)^2 + 5(4)(2) + 2
= 3 * 16 + 40 + 2
= 48 + 40 + 2
= 90
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weqwewe [10]

Answer:

3.125 g/cm³.

Step-by-step explanation:

The formula for density/mass/volume is d = m/v, where d is density in grams per cm cubed, m is in grams, and v is in cm cubed.

In this case, m = 25 and v = 8.0.

d = 25 / 8.0

d = 25 / 8

d = 3.125.

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Hope this helps!

6 0
3 years ago
HELP PLEASE
Georgia [21]

Answer:

\huge\boxed{\sf No}

Step-by-step explanation:

Evan spent 20 hours doing homework last week

25 hours were spent this week.

<u>Let's see what 125% of 20 equals:</u>

= (125 / 100) * 20

= (125 / 10) * 2

= 125 / 5

= 25 hours

But,

<u>It is written that Evan thought he spent 125 % more than the last week which means:</u>

= (125% of 20) + 20

= 25 + 20

= 45 hours

He should've said that he has given 25% more time than the last week.

(<u>Note that:</u> 25 % of 20 equals 5 so 25 % more than last week will be equal to (25 % + 20) = (5+20) = 25)

\rule[225]{225}{2}

Hope this helped!

<h3>~AH1807</h3>
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