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allochka39001 [22]
2 years ago
13

Maths a²(5a - 3b) -3a²​

Mathematics
1 answer:
11Alexandr11 [23.1K]2 years ago
4 0

Answer:

5a^{3} - 3a^{2} b-3a^{2}

Step-by-step explanation:

a^{2} (5a-3b)-3a^{2} |

Expand brackets

5a^{3} - 3a^{2} b-3a^{2}

Final Answer is

5a^{3} - 3a^{2} b-3a^{2}

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Answer:

the mean is 7

Step-by-step explanation:

used a mean calculator

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Megan purchased 12 square yards of flooring for a total of $432. what was the price of this flooring per square foot? how do i s
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432/12 = $36 per square yard
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The sum of the first k terms in the sequence is 118096, find the value of k. The first term is 78732 the common ratio is 1/3.
FrozenT [24]

Answer:

k = 10

Step-by-step explanation:

The sum of k terms of a geometric sequence with first term a1 and common ratio r is given by ...

... Sk = a1·(1 -r^k)/(1 -r)

For the given numbers, this is ...

... 118096 = 78732·(1 -(1/3)^k)/(1 -1/3)

Manipulating this to get the term containing k, we have

... 1 -(2/3)(118096/78732) = (1/3)^k

... 1/59049 = (1/3)^k

Taking logarithms, we get

... -log(59049) = -k·log(3)

... log(59049)/log(3) = k = 10

8 0
3 years ago
one week 72 people got a speeding ticket. the next week only 36 people got a speeding ticket. what is the percent of change in s
Ierofanga [76]
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3 years ago
Is (3,6) a solution of y's 3x + 4?
notka56 [123]

Step 1:

(3,6) means x coordinate is 3 and y coordinate 6

Step 2:

We substitute the values of x = 3 and y = 6 into the inequality

\begin{gathered} y\text{ }\leq\text{ }\frac{2}{3}\text{ }x\text{ + 4} \\ 6\text{ }\leq\text{ }\frac{2}{3}\text{ x }\frac{3}{1}\text{  + 4} \\ 6\text{ }\leq\text{ 2 + 4} \\ 6\text{ }\leq\text{ 6} \end{gathered}

Conclusion:

Since 6 is equal to 6, then (3,6) is a solution of the given Inequality

3 0
1 year ago
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