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tino4ka555 [31]
4 years ago
11

Which ordered pair is a solution of the equation 2x − y = 9?

Mathematics
1 answer:
BigorU [14]4 years ago
3 0

Answer:

The answer is C; (5, 1).

Step-by-step explanation:

2(5) - 1 = 9

10 - 1 = 9

9 = 9

9 = 9 is a true statement so the answer is C.

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Please help
Ira Lisetskai [31]

Answer:

285°

Step-by-step explanation:

105+180=285

7 0
3 years ago
Determine the type and number of solutions of 4x^2-5x+1=0.
Arlecino [84]
<span>4x² - 5x + 1 = 0
a = 4; b = - 5, c = 1
</span>Δ = b² - 4.a.c
Δ = (-5)² - 4.4.1
Δ = 25 - 16
Δ = 9
<span>
x = - b </span>± √Δ / 2.a
x =  \frac{-5\± \sqrt{9} }{2*4}
x =  \frac{-5\±3}{8}
x' =  \frac{-5-3}{8} =  \frac{-8}{8} = -1
x' = \frac{-5+3}{8} = \frac{-2}{8} (\div2) = \frac{-1}{4}


A. Two real solutions (x' = -1 and x'' = -1/4)
4 0
3 years ago
melissa can earn $18 each time she cuts grass. if she cuts the grass x times, write an expression that shows how much she will e
Alborosie

18x

Simple as that. 18 times however many times she cuts the grass

7 0
3 years ago
The circumference of a circle is 87 cm. What is the DIAMETER of the circle?
natulia [17]

Answer:

27.70

Step-by-step explanation:

you have to do 87 divided by the pi you only have to do 3.14 as the pi.

6 0
3 years ago
Ricardo has a square hot tub. He wants to build a square pool next to it that is a dilation of the hot tub using a scale factor
ozzi

Answer:

\boxed{Side \ Length \ of \ hot \ tub = 4.8\ ft.}

Step-by-step explanation:

Scale Factor = 5

Also,

B'C' = 24 feet

Since both are squares so both have all sides equal.

Sqaure A'B'C'D' is dilated by a scale factor of 5

So,

AB = BC = CD = DA = 24/5 = 4.8 ft.

4 0
4 years ago
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