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2 years ago

8

Students set up the experiment shown in their Biology class. After 24 hours, students noticed gas had accumulated in one of the

inverted test tubes.
They measured the amount of gas.
What would be a best explanation for the gas accumulated in one of the inverted test tubes?

1 answer:

Orlov [11]2 years ago

7 0

Answer: Light caused the eludes plants to photosynthesize, releasing O2 gas

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Solve the inequality 2x < 8 - 4(2 - x)

nevsk [136]

Remember you can' do anything to boht sides, but when times negative, flip sign
distributive property
a(b+c)=ab+ac

distribute the -4
-8+4x

now we have
2x<8-8+4x
2x<4x
minus 2x both sides
0<2x
therefor
0<x

answer is x>0

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3 years ago

Maria bought 1,000 pounds of bananas for $220. How much did they cost per pound?

densk [106]

Answer:

i believe the answer is $0.22 per pound.

Step-by-step explanation:

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2 years ago

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Hannah has $400 to spend on vacation. She is going to be gone for 3 days. What is the most she

eimsori [14]

Answer:

I'll spend about maybe $80

Step-by-step explanation:

So I can have fun also this is a joke not real answer >:D

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2 years ago

Find the value of the expression 4a to the fourth power - 2b squared +40 when a =2 and b=7

Tom [10]

4a^4 -2b^2 +40
a=2
b=7
4(2)^4 -2(7)^2 +40
PEMDAS is what your gonna use to solve this you go from right to left

First is P which is parentheses which is none
second is E which stands for exponents
4(32)-2(49)+40
now MD multiply or divide
128-98+40
now add or subtract
30+40
last one
70 this is your answer i hope

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3 years ago

What value of B makes the expression, x^2 + bx + 64 a perfect square trinomial?

Kitty [74]

B = 16
x^2 + 16x + 64 can be factored down to (x + 8)^2.

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2 years ago