3 years ago

How many crew members in all were in expeditions 7-12

Mathematics

1 answer:

Aleksandr [31]3 years ago

6 0

7 is the answer brooo

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Tobeg says the equation 3x + 2y= 270 and y=4/5x + 20 intersect at the point (50,60) is this true how do you know

il63 [147K]

ANSWER

Yes it is very true

<u>EXPLANATION</u>

If the two equations intersect at $(50,60)$ then this point must satisfy the two equations.

$3x+2y=270---(1)$

We substitute $(50,60)$ in to erquation (1)

$3(50)+2(60)=270$

$150+120=270$

$270=270$

$y=\frac{4}{5}x+20 ---(2)$

We now substitute $(50,60)$ in to erquation (2) also

$60=\frac{4}{5}(50)+20$

$60=40+20$

$60=60$

Since the point satisfy all the two equations, it is true that they intersect at $(60,50)$

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3 years ago

Is this correct? the question is asking if the triangle would have a right, acute, or obtuse angle.

IgorLugansk [536]

Answer:

ut ok points from me so I took it from u

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3 years ago

It costs $6.45 to buy 5 songs on I-tunes. How much does it cost to buy 20 songs?

babunello [35]

Answer:$25.80

Step-by-step explanation:

6.45/5 = 1.29

1.29 x 20 =25.80

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2 years ago

Solve by factoring: 2x2 - 5x - 12 = 0

Zepler [3.9K]

Step-by-step explanation:

$2 {x}^{2} - 5x - 12$

$2 {x}^{2} - 8x + 3x - 12$

$2x(x - 4) + 3(x - 4)$

$2x + 3 = 0 \: \: x - 4 = 0$

$x = \frac{ - 3}{2} \: \: x =4$

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3 years ago

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8x – 3y = 1<br> –2x + 3y = 11<br> Solve a Linear System by Elimination

alexdok [17]

I think it’s x= 2 but i would check that

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3 years ago