3 years ago

Please help...trying to help my son with Alegebra, but it's been 30 years.

1 answer:

7 0

Wait it says ur in high school so u can't be over 30. that isn't possible. So what's the problem here? not good at math.

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2/5 of a class are girls. 3/4 of the boys are called Paul. What fraction of the whole class is not called Paul?

Novay_Z [31]

Answer:

1/4

Step-by-step explanation:

3/4 + 1/4 = 4/4

7 0

3 years ago

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Can you give me answer to both questions am confused . Thank you .

Naddik [55]

For the first one, it would be 5/3 and 19/3
the second one would be 40

5 0

3 years ago

Which of the following expressions correctly uses the properties of summations to represent

madam [21]

Answer:

Option C is correct.

$7 \cdot \sum_{i=1}^{18} i^2 + 9 \cdot 18$

Step-by-step explanation:

Given the expression: $\sum_{i=1}^{18} (7i^2+9)$

Using properties of summation:

$\sum_{i=1}^{n} (a+bi) =\sum_{i=1}^{n} a + \sum_{i=1}^{n} bi$

$\sum_{i=1}^{n} a = an$

Using properties of summation in the given expression we have;

$\sum_{i=1}^{18} (7i^2+9)$

= $\sum_{i=1}^{18} 7i^2 + \sum_{i=1}^{18} 9$

= $7 \cdot \sum_{i=1}^{18} i^2 + 9 \cdot 18$

Therefore, the following given expression uses the properties of summation to represents is, $7 \cdot \sum_{i=1}^{18} i^2 + 9 \cdot 18$

8 0

3 years ago

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Using either the special 45-45 right triangle or the Unit circle determine what the exact value

WITCHER [35]

Positive root 2/2 (the last one)

6 0

3 years ago

Hailey paid $13 for 1 3/7 kg of sliced salami <br><br> What was the cost per kilogram of salami

JulijaS [17]

Translate words into numbers.

13/(1 3/7)

First convert to improper fraction.

13/(10/7)

Then, note that division is the same as multiplying by the divisor's reciprocal.

13x7/10=9.1

answer: $9.10 per kilogram

4 0

3 years ago

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