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rosijanka [135]
3 years ago
9

Which expressions are equivalent to -6.3x - 4.2 ?

Mathematics
2 answers:
valentina_108 [34]3 years ago
4 0

Answer:

First 3 are equivalent the last 3 are not.

Step-by-step explanation:

Proof

Zarrin [17]3 years ago
3 0

Answer:

6.3x - 4.2

Step-by-step explanation:

r

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TENNIS In tennis, the Grand Slam tournaments
marin [14]
Nadal = federer-3 = 17-3 = 14
5 0
2 years ago
The total cost of renting a vacation
sleet_krkn [62]

Answer:

y=125x+75

Step-by-step explanation:

Y= 125x+B

700=125(5)+B

700=625+B

700-625=625-625+B

75=B

4 0
3 years ago
There are 300 students. for every 8 are boys, and for every seven are girls. how many boys?
katen-ka-za [31]
8+7=15
300/15=20
8 x 20 =160 Boys
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140 + 160 = 300

Hope this helps!

4 0
3 years ago
Find the exact value of cos theta​, given that sin thetaequalsStartFraction 15 Over 17 EndFraction and theta is in quadrant II.
vova2212 [387]

Answer:

cos \theta = -\frac{8}{17}

Step-by-step explanation:

For this case we know that:

sin \theta = \frac{15}{17}

And we want to find the value for cos \theta, so then we can use the following basic identity:

cos^2 \theta + sin^2 \theta =1

And if we solve for cos \theta we got:

cos^2 \theta = 1- sin^2 \theta

cos \theta =\pm \sqrt{1-sin^2 \theta}

And if we replace the value given we got:

cos \theta =\pm \sqrt{1- (\frac{15}{17})^2}=\sqrt{\frac{64}{289}}=\frac{\sqrt{64}}{\sqrt{289}}=\frac{8}{17}

For our case we know that the angle is on the II quadrant, and on this quadrant we know that the sine is positive but the cosine is negative so then the correct answer for this case would be:

cos \theta = -\frac{8}{17}

5 0
2 years ago
Which equation represents the line with a slope of 5/6 that passes through the point (-2, 1)?
andreyandreev [35.5K]

Answer:

Step-by-step explanation:

Slope m = 5/6

The points (-2,1)

So; y1 = 1 and x1 = -2

The equation is y - y1 = m(x - x1)

y - 1 = 5/6(x + 2)

Multiply each term by 6

6y - 6 = 5(x + 2)

6y - 6 = 5x + 10

6y = 5x + 10 + 6

6y = 5x + 16

- 5x + 6y = 16

Multiplying by minus

5x - 6y = -16

5 0
2 years ago
Read 2 more answers
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