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Zina [86]
4 years ago
10

I need the anwers to these questions:

Mathematics
1 answer:
Alecsey [184]4 years ago
8 0

You solve the first two the same way

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{y +2 = 4x<br> {y = 3x - 1
jeka94

.Answer:

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
1/3(2x-57)+1/3(6-x)=-4<br><br> Solve for x
Sati [7]

answer:

x=39

I hope this helps:)

8 0
4 years ago
if the length of the drawbridge, r, is 20 meters and the point p is 16 meters above the roadway , what is the distance d?
zhenek [66]
I'm assuming that the figure formed in this problem is a right angle. Thus, we need to use the Pythagorean theorem to get the distance or the hypotenuse.

Length = 20 meters
Height = 16 meters

a² + b² = c²

(20m)² + (16m)² = c²
400m² + 256m² = c²
656m² = c²
√656m² = √c²
25.61 m = c

The distance is 25.61 meters.
8 0
4 years ago
A model ship is built to scale of 1:400. If the actual length of the ship is 45 m, the length of the model will be what in centi
jekas [21]

Answer:

11.25 cm

Step-by-step explanation:

Actual ship: 45m  → 4500 cm

Model ship: 4500/400 = 11.25 cm

5 0
4 years ago
A line that includes the point (2, 9) has a slope of 8. What is its equation in slope-intercept
sleet_krkn [62]

Answer:

y-8x+7=0

Step-by-step explanation:

slope(m)=8

using slope intercept form of equation of staright line we get

y=mx+b

y=8*x+b

y-8x=b ................  eq(i)

since the line include the point (2,9) it satisfies the euation,

here x=2 and y=9

equation: y-8x=b

9-8*2=b

9-16=-b

-7=b

substituting the value of b in eq(i) we get

y-8x=-7

y-8x+7=0   is a required equation of the line.

8 0
3 years ago
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