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makkiz [27]
3 years ago
12

What’s the surface area in square centimeters???

Mathematics
1 answer:
choli [55]3 years ago
3 0

Answer: 1029

Step-by-step explanation:

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Determine whether the lines are parallel or perpendicular or neither. 2x=y−10 and y=−2x
MrRa [10]

Put the first equation in slope-intercept form, or y = mx + b. Start by subtracting y from both sides.

2x - y = -10, subtract 2x from both sides.

-y = -10 - 2x

Divide both sides by negative one.

y = 10 + 2x

To find the slope when the equations are in slope-intercept form you look at the coefficient of x. The first equation has the slope of 2 (which we just found), and the second equation has the slope of -2.

Parallel lines have the same slope and perpendicular lines have opposite reciprocal slopes. Since 2 and -2 are neither of these, your answer is neither.

7 0
3 years ago
Please help me with 13-20 but I need help with 13-18 to find x because its hard for me and 19-20 to find BC and find triangle PQ
AveGali [126]
We are seeing 30, 60, 90, triangles, and 45, 45, 90, triangles.
13. 3 root 3
14. 5 root 2
15. 7/2 root 2
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3 years ago
I need help with this
aliya0001 [1]

Answer:

Yes Jeff is the correct answer

Step-by-step explanation:

7 0
2 years ago
An object falls 16 t 2 16t2 feet in t t seconds. You drop a rock from a bridge that is 75 feet above the water. Will the rock hi
GuDViN [60]

Answer:

No it is still 11 feet from the water at 2 seconds

2.1651 seconds  is when it will hit the water

Step-by-step explanation:

h(t) = -16 t^2 +75

This is the formula  for the distance

The -16t^2 is due to gravity and the 75 is the height above the bridge

We want to know the height a t =2

h(2) = -16 (2)^2 +75

h(2) =-64 +75

h(2) = 11

The rock will be 11 ft above the water

When will the rock hit the water

h = 0

0 = -16 t^2 +75

Subtract 75 from each side

-75 = -16t^2 +75-75

-75 = -16t^2

Divide by -16

-75/-16 =  -16t^2 /-16

75/16 = t^2

Take the square root of each side.  We only take the positive square root since time must be positive

sqrt(75/16) =t

5/4 sqrt(3) = t

2.1651 seconds = t


4 0
3 years ago
In a plane, line N is parallel to line O, Line O is parallel to P, and line L is perpendicular to line N. Which must be true?
forsale [732]
B) NllP is the answer
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2 years ago
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