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Ymorist [56]
3 years ago
15

I really need help with this. Please explain how you get the answer.

Mathematics
1 answer:
Lorico [155]3 years ago
8 0

So firstly, substitute the values into the expression: 3^3-2*5^2-3*3^3+(-3)^4

Next, solve the exponents: 27-2*25-3*27+81

Next, solve the multiplications: 27-50-81+81

Lastly, combine everything, and <u>your answer will be -23.</u>

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How do you figure out your ratios
soldi70 [24.7K]
Hello
To find an equal ratio, you can either multiply or divide each term in the ratio by the same number (but not zero). For example, if we divide both terms in the ratio 3:6 by the number three, then we get the equal ratio, 1:2.
7 0
3 years ago
Read 2 more answers
A chemist is using 336 milliliters of a solution of acid and water. If 19.4 % of the solution is acid, how many milliliters of a
denpristay [2]

Answer:

65.2 milliliters

Step-by-step explanation:

The quantity 336 milliliters is the 100% of the solution. We can represent this information on a table:

Milliliters        Percentage of solution

     336        ⇔            100%

we are told that 19.4% of this solution is acid, and we need to know how many milliliters represents this percentage. I will call the number of milliliters of acid on the solution 'x', and updating the last table:

Milliliters        Percentage of solution

     336        ⇔            100

     x             ⇔            19.4%

We can solve this problem for 'x' using the<u> rule of three</u> which is to multiply the cross quantities on the table (336 by 19.4) and then divide by the remaining amount (100):

x = 336(19.4)/100

x = 6,518.4/100

x = 65.184

which rounding to the nearest tenth is: 65.2 milliliters

8 0
3 years ago
Can someone pls help me ASAP I’ll give brainiest
Umnica [9.8K]
3^x+1=3^3
X+1=3
X=3-1
X=2
8 0
3 years ago
You know that 15% of a number n is 12. How can you use this to find 30% of n? 45% of n? Explain.
Keith_Richards [23]
30% is 24
45% is 36
take 15% and multiply it by however much it takes to make the percentage than multiply that by 12
5 0
3 years ago
Can you answer this???
Andreas93 [3]

Answer:

no sorry

Step-by-step explanation:

4 0
2 years ago
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