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Snowcat [4.5K]
3 years ago
9

A 400-g sample of a radioactive substance is placed in a chamber to be tested. After 3 h,

Mathematics
1 answer:
muminat3 years ago
3 0

Answer:

You left out the quantity of grams remaining.

Step-by-step explanation:

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What is the answer for the equation (2+3x)4
balandron [24]

Answer:

8+12x

Step-by-step explanation:

7 0
2 years ago
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The fare for a taxi cab is $2.50 per passenger and $0.75 for each mile. A group of friends has $22.00
xeze [42]

For this case we have to:

x: Let the variable representing the number of people to travel in the group

y: Let the variable representing the number of miles traveled.

If friends only have $22 then we have the following inequality:

2.50x + 0.75y \leq22

Now, if there are three people in the group we have that x = 3.

2.50 (3) + 0.75y \leq22\\7.5 + 0.75y \leq22\\0.75y \leq22-7.5\\0.75y \leq14.5\\y\leq \frac {14.5} {0.75}\\y\leq19.33

The taxi can travel a maximum of 19.33 miles.

On the other hand, if the group wants to travel 10 miles then we have to y = 10.

2.50x + 0.75 (10) \leq22\\2.50x + 7.5 \leq22\\2.50x \leq22-7.5\\2.50x \leq14.5\\x\leq \frac {14.5} {2.50}\\x \leq5.8

Thus, they could travel a maximum of 5 people.

ANswer:

2.50x + 0.75y \leq22

Traveling 3 people, the taxi can travel a maximum of 19.33 miles

Traveling 10 miles, a maximum of 5 people can travel

7 0
2 years ago
Simplify 5t+ (-3) - ((7t + 5) -( 8-39).<br><br>A -4 <br>B 4<br>C -10t<br>D 10t​
brilliants [131]

I guess it's A -4 sorry if it's wrong answer

3 0
3 years ago
Solve by any method from this unit. y2 - 5y = 3 Please help
ExtremeBDS [4]

Answer:

-1

Step-by-step explanation:

First we combine like terms, so y2 - 5y = - 3y

Now we get - 3y = 3

Then we divide both sides by - 3

Now we get y =-1

7 0
2 years ago
If the measure of cae is 95° what is the measure of cba
xxTIMURxx [149]
<span>CAE=95 GAE=90 CAG=95-90=5 ACG=5 CGA=180-(5+5)=170 CBA=12—170=85</span>
3 0
3 years ago
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