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4 years ago

Multiply (x-4)(2x+3) using FOIL method. Select the answer choice showing the FOIL method products

2 answers:

4 0

I would say C!

(x-4)(2x+3)
x times 2x
x times 3
-4 times 2 x
-4 times 3
I know you don't need this, but after add all like terms to get your final answer.

Strike441 [17]4 years ago

3 0

(x - 4)(2x + 3)

FOIL = first,outside,inside,last

F -- so multiply first terms in each set....(x)(2x)
O -- multiply outside terms in each set...(3)(x)
I -- multiply inside terms in each set....(-4)(2x)
L -- multiply last terms in each set.......(-4)(3)

so we have : (x)(2x) + (3)(x) + (-4)(2x) + (-4)(3).....answer C

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In ΔABC, the lengths of a, b, and c are 22.5 centimeters, 18 centimeters, and 13.6 centimeters, respectively.

Irina-Kira [14]

Given the values of the three sides of the triangle, we can apply the Cosine Law to find the angles of the triangle. Recall that for we can express the value of c through the equation below.

$c^{2} = a^{2} + b^{2} - 2abcosC$

Rearranging this equation, we can find the value ∠C as shown below.

$\cos C = \frac{a^{2}+b^{2}-c^{2}}{2ab}$
$C = cos^{-1} (\frac{a^{2}+b^{2}-c^{2}}{2ab})$

We can apply the same reasoning for finding the value of ∠B as shown.

$B = cos^{-1} (\frac{a^{2}+c^{2}-b^{2}}{2ac})$

Plugging in the values of the sides (see image attached) from the given. It will now be straightforward to compute for ∠B and ∠C.

$C = cos^{-1} (\frac{22.5^{2}+18^{2}-13.6^{2}}{2(22.5)(18)})$
$C \approx 37.19$

$B = cos^{-1} (\frac{22.5^{2}+13.6^{2}-18^{2}}{2(22.5)(13.6)})$
$B \approx 53.13$

Answer: ∠C = 37.19° and ∠B = 53.13°

7 0

4 years ago

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Whats the answer giving brainliest>>>>

Elza [17]

Answer:

the answer is b

Step-by-step explanation:

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3 years ago

A fitness club charges $25 per month as well as a one-time $80 fee of all new members which equation represents the cost in doll

madam [21]

Answer: So if you want to find the total cost (c) for a certain number of months (m) and it costs $35 per month, you just need to multiply the number of months by the cost per month. So

35m=c

If you want to see the units cancel

($35/month)(months)=$

The months will cancel out, and you will be left with total dollars.

Not sure about the second part of your question, but if you wanted to figure out how much it would cost to be a member for 6 months, you would just plug in 6 for m.

35(6)=c

c=210

So $210

Step-by-step explanation:

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4 years ago

Explain how can you use a quick picture to find 3 x 2.7

weeeeeb [17]

2.7
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4 years ago

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15 POINTS! PLEASE HELP! BRAINLIEST!

lina2011 [118]

Answer:

D. 15.3%

Step-by-step explanation:

Total number of outcomes:

2¹⁵ = 32768

Number of combinations of getting 6 heads:

15C6 = 15!/6!(15-6)! = 5005

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P(6 heads out of 15 flips) = 5005/32768 = 0.1527... ≈ 15.3%

Correct choice is D

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3 years ago

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