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3 years ago

6

One equation in a system of equations is y=2x+10. Which equation below would have to be the second equation so that the system h

as infinitely many solutions?

2 answers:

slega [8]3 years ago

8 0

Option D is correct.

D. y=2 (x+5)

DiKsa [7]3 years ago

3 0

Answer:

D

Step-by-step explanation:

y = 2x + 10 is the same thing as y = 2(x + 5) because 2 x x = 2x and 2 x 5 = 10

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HELPPPP!!!!! what is the y-intercept of the parabola y = x2 + 6x .

Natali [406]

The y intercept is what we get when x=0, so in this case it's

Answer: y=0

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3 years ago

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How many real number solutions does this equation have<br> <img src="https://tex.z-dn.net/?f=-7x%5E2%2B6x%2B3%3D0" id="TexFormul

garik1379 [7]

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None

Step-by-step explanation:

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3 years ago

A small plane and a large plane are 6.8km from each other, at the same altitude (height). From an observation tower, the two air

Lemur [1.5K]

Answer:

7.9km

Step-by-step explanation:

(a)See attached for the diagram representing this situation.

(b)

In Triangle ABC

$\text{Using Law of Sines}\\\dfrac{\sin A}{a}=\dfrac{\sin C}{c} \\\dfrac{\sin A}{5.2}=\dfrac{\sin 58^\circ}{6.8} \\\sin A=5.2 \times \dfrac{\sin 58^\circ}{6.8}\\A=\arcsin (5.2 \times \dfrac{\sin 58^\circ}{6.8})\\A=40.43^\circ$

Next, we determine the value of Angle B.

$\angle A+\angle B+\angle C=180^\circ\\40.43+58+\angle B=180^\circ\\\angle B=180^\circ-(40.43+58)\\\angle B=81.57^\circ$

Finally, we find b.

$\text{Using Law of SInes}\\\dfrac{b}{\sin B}=\dfrac{c}{\sin C} \\\dfrac{b}{\sin 81.57^\circ}=\dfrac{6.8}{\sin 58^\circ} \\b=\dfrac{6.8}{\sin 58^\circ} \times \sin 81.57^\circ\\b=7.9km $ (to the nearest tenth of a kilometer)$

The distance between the small plane and the observation tower is 7.9km.

8 0

4 years ago

7 x 4 x ?? =2,800 and 7 x 4 x ?? =28,000

Kamila [148]

7x4x100=2800
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4 0

3 years ago

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When flipping a coin, what is the probability of flipping heads and then heads?

anygoal [31]

Answer:

answer: 1/4

Step-by-step explanation:

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3 years ago

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