2 years ago

Janelle ls saving to buy a guitar that

Mathematics

1 answer:

erik [133]2 years ago

6 0

Answer:

Janelle should save $13.60 per week

because (350 - 105.20) + 18 13.6

Step-by-step explanation:

105.20-350.00=244.8

244.8/18=13.6

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there is a group of 4 people ordering pizza. each person gets 6 slices and there are 8 slices in each. how many pizzas should th

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They should get 3 pizzas.

4*6=24

24/8=3

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3 years ago

For the expression: ( a+b/b − a/a+b )÷( a+/a − b/a+b ) Find the domain. AND Prove that for all admissible values of a, the value

olya-2409 [2.1K]

Step-by-step explanation:

((a+b)/b − a/(a+b)) ÷ ((a+b)/a − b/(a+b))

To find the domain, remember that any denominators can't be 0.

b ≠ 0

a + b ≠ 0

a ≠ 0

(5/(a+1) − 3/(a−1) + 6/(a²−1)) × (a+1)/2

Distribute the a+1.

(5 − 3(a+1)/(a−1) + 6/(a−1)) / 2

Factor out 1/(a−1).

(5(a−1) − 3(a+1) + 6) / (2(a−1))

Simplify.

(5a − 5 − 3a − 3 + 6) / (2a−2)

(2a−2) / (2a−2)

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3 years ago

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Contact [7]

Answer:

$x = - 3 \frac{4}{15}$

Step-by-step explanation:

$2x - \frac{1}{3} + 3 = x - \frac{3}{5}$

$= > 2x - \frac{ 1 +9 }{3} = x - \frac{3}{5}$

$= > 2x + \frac{8}{3} = x - \frac{3}{5}$

$= > 2x - x = - \frac{3}{5} - \frac{8}{3}$

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$= > x = - \frac{49}{15}$

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2 years ago

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2 years ago

Law of cosines: a2 = b2 + c2 – 2bccos(A) What is the measure of P to the nearest whole degree? 35° 52° 57° 72°

Ymorist [56]

Answer: 57°

Given : In triangle PQR, the side PQ is 17, QR is 15, and PR is 14.

We use law of cosine formula

$QR^2 = PR^2 + PQ^2 - 2* PR * PQ * cos (P)$

$15^2 = 14^2 + 17^2 - 2*14 * 17 * cos(P)$

225 = 196 + 289 - 476 cos(P)

225 = 485 - 476 cos (P)

Subtract 485 on both sides

-260 = -476 cos(P)

$\frac{260}{476}$ = cos(P)

P = $cos^{-1} (\frac{260}{476})$

P= 56.89202

So measure of angle P is 57 degrees

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2 years ago

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