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aleksley [76]
3 years ago
9

4. A dolphin decsends toward the bottom of

Mathematics
1 answer:
lisov135 [29]3 years ago
7 0
It descended 240 feet 12*20 is 240
You might be interested in
Y^3-9y^2+y-9 I don't know how to solve this can you help
aleksley [76]
I'm guessing your problem is this:
y³ - 9y² + y - 9 = 0
right?

In solving this problem, I recommend doing this:
y³ - 9y² + y - 9 = 0
Factor out a y² from the first two numbers in the problem:
y²(y - 9) + (y - 9) = 0
Separate the parentheses which means y - 9 goes on one side. The y² added a one since it came from the + 1 in the middle of expression. When you're separating parentheses like this you just take the outside numbers and combine them together. Since + 1 came from the outside of the (y - 9) and y² also was sitting on the outside of (y - 9) combine them to make y² + 1. Like this:
(y² + 1)(y - 9) = 0
Now separate your two parentheses to two separate problems:
(y² + 1) = 0    and    (y - 9) = 0
Now you're y² + 1 will equal:
y² = -1
y = √-1 <-- This number doesn't exist so it will be an imaginary number (i). If you guys didn't learn that in your class I recommend just leaving it as i for that part.
Now solve y - 9 = 0:
y = 9 <-- Since we added nine to both sides to get this.

So you're final answer should be y = i and 9
3 0
3 years ago
While Al was staying overnight on vacation with his friends his only expenses were for food. Al spent $7.52 on lunch, $9.74 on d
Serggg [28]

Answer:

$25.10

Step-by-step explanation:

lunch=$7.52

dinner=$9.74

breakfast=$5.16

money left=$2.68

make total money he began with ‘x’

to find the total money he began with it will be

x-lunch+dinner+breakfast=money left

x-$7.52+$9.74+$5.16=$2.68

x-$22.42=$2.68

x=$2.68+$22.42

x=$25.10

8 0
2 years ago
Find the slope from the table:
Aleonysh [2.5K]

Answer:

B! \frac{-5}{3}

Step-by-step explanation:

Because 10 minus 5 (from the y column) is -5. And -5 - (-2) is +3. So you get -5 over 3 (\frac{-5}{3}). which is B!

Can you give me brainliest please?? :)

5 0
2 years ago
Please help me on this one
lara31 [8.8K]

Answer:8600

Step-by-step explanation:

477

8 0
3 years ago
Simplify <br> Rewrite the expression in the form z^n<br><br> z^5•z^6= ______
gtnhenbr [62]

Answer:

z²^30

Step-by-step explanation:

This is it enjoy.

4 0
3 years ago
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