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Vedmedyk [2.9K]
4 years ago
8

How do you answer this pls help 7^2+4^3÷2^5​

Mathematics
2 answers:
lana66690 [7]4 years ago
5 0

Assignment: \bold{Solve \ Equation: \ 7^2 \ + \ 4^3 \ \div 2^5}

<><><><><><><>

Answer: \boxed{\bold{51}}

<><><><><><><>

Explanation: \downarrow\downarrow\downarrow

<><><><><><><>

[ Step One ] Apply PEMDAS Order Of Operations

Note: \bold{PEMDAS: \ Parenthesis, \ Exponents, \ Multiply, \ Divide, \ Add, \ Subtract}

\bold{7^2: \ 49}

[ Step Two ] Rewrite Equation

\bold{49+64\div \:2^5}

[ Step Three ] Calculate Exponents

\bold{4^3: \ 64}

[ Step Four ] Rewrite Equation

\bold{49+64\div \:2^5}

[ Step Five ] Calculate Exponents

\bold{2^5: \ 32}

[ Step Six ] Rewrite Equation

\bold{49+64\div \:32}

[ Step Seven ] Divide

\bold{64\div \:32: \ 2}

[ Step Eight ] Rewrite Equation

\bold{49+2}

[ Step Nine ] Add

\bold{51}

<><><><><><><>

\bold{\rightarrow Mordancy \leftarrow}

adelina 88 [10]4 years ago
4 0

Answer:

51

Step-by-step explanation:

basically by using BIDMAS

solve for Indicies (THE I) AND WITH THE RESULTS use the equation to get 51

(or use a calculator) <---- the easy way

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3 years ago
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Answer:

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Step-by-step explanation:

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4 years ago
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2 years ago
A certain insecticide kills 80% 80% of all insects in laboratory experiments. A sample of 14 insects is exposed to the insectici
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Answer: The probability that exactly 2 insects will survive = 0.2501

Step-by-step explanation:

Given: A certain insecticide kills 80% of all insects in laboratory experiments.

The probability that a particular insect survives= 1-0.80=0.20

Sample size: n=14

Binomial probability distribution:

P(X=x)=\ ^nC_xp^x(1-p)^{n-x}, where x= number of successes , p=probability of success in each trial, n= sample size.

The probability that exactly 2 insects will survive = ^{14}C_2(0.20)^2(0.80)^{12}

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6 0
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