3 years ago

Which coordinate lies in the solution set for

Mathematics

1 answer:

tatyana61 [14]3 years ago

7 0

Answer:

Step-by-step explanation:

to do this, u would just sub ur answer choices into the inequalities and see what is true. Keeping in mind, that ur point has to satisfy both inequalities for it to be a solution.

2x + y < 12...subbing in (3,3) 3x - 2y > 2...subbing in (3,3)

2(3) + 3 < 12 3(3) - 2(3) > 2

6 + 3 < 12 9 - 6 > 2

9 < 12....true 3 > 2....true

(3,3) lies in the solution set <==

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2 years ago

What a impor fraction

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Aleksandr-060686 [28]

Answer:

10 dimes and 4 quarters

Step-by-step explanation:

Number of dimes = d, each d = 10 c
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10d + 25q = 200
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Solve for q by substitution:

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2 years ago

In right triangle PQR , PQ=12 cm and QR=5cm .What is cos R?

Juliette [100K]

Answer:

cosR = $\frac{5}{13}$

Step-by-step explanation:

assuming the right triangle has ∠ Q = 90° with legs 5 and 12

then this is a 5- 12- 13 right triangle with hypotenuse PR = 13 cm

then

cosR = $\frac{adjacent}{hypotenuse}$ = $\frac{QR}{PR}$ = $\frac{5}{13}$

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1 year ago