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horrorfan [7]
3 years ago
12

PLEASE HELP IF YOU ARE GOOD AT MATH THANKS

Mathematics
1 answer:
Scrat [10]3 years ago
4 0
Y=4(x+1)
the form is y=mx+b, and they already gave you b so you just need to find m(slope) by rise over run
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a ship leave port p and sails on a bearing N50 degree E to Port Q 15km away.then it sails on a bearing of S45 degree E to Port R
Shtirlitz [24]

Answer:

Port r is 100° from Port p and 26km from Port p

Step-by-step explanation:

Lets note the dimension.

From p to q = 15 km = a

From q to r = 20 km= b

Angle at q = 50° + 45°

Angle at q = 95°

Ley the unknown distance be x

Distance from p to r is the unknown.

The formula to be applied is

X²= a²+ b² - 2abcosx

X²= 15² + 20² - 2(15)(20)cos95

X²= 225+400-(-52.29)

X²= 677.29

X= 26.02

X is approximately 26 km

To know it's direction from p

20/sin p = 26/sin 95

Sin p= 20/26 * sin 95

Sin p = 0.7663

P= 50°

So port r is (50+50)° from Port p

And 26 km far from p

3 0
3 years ago
What is −4(−5x+2)−3x−5= -30
alexandr1967 [171]

Answer:

x = -1

Step-by-step explanation:

Step 1: Write equation

-4(-5x + 2) - 3x - 5 = -30

Step 2: Solve for <em>x</em>

<u>Distribute -4:</u> 20x - 8 - 3x - 5 = -30

<u>Combine like terms:</u> 17x - 13 = -30

<u>Add 13 on both sides:</u> 17x = -17

<u>Divide both sides by 17:</u> x = -1

3 0
3 years ago
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ONLY answer if you know what the answer is. If you are not sure DONT FREAKING ANSWER.
Bogdan [553]

Answer:

5 = |-5|

Step-by-step explanation:

Think of it as a number line, like in the picture below. The absolute value is how far a number is from zero (0). If 5 is 5 away from zero, then the opposite of 5 (-5) is also 5 away from zero.

Refer to the picture below for an illustration:

8 0
2 years ago
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If 3 pounds of grass seed covers 80 square feet, how many pounds are needed to cover 340 square feet?
Arada [10]

Answer:

48.75

Step-by-step explanation:

340/80=16 1/4

16 1/4*3=48.75

7 0
2 years ago
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58 X 70 + 0 - 1 X 80<br><br> STARTING A NEW ACCOUNT SO HERES THE POINTS
laiz [17]

3980 that is the answer



3 0
3 years ago
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