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Mamont248 [21]
3 years ago
10

Please help thank you

Mathematics
1 answer:
lubasha [3.4K]3 years ago
8 0

Answer:

The x-intercept is a point on the x-axis where the line crosses the x-axis. To find the x-intercept, you always use a value of y=0 because if y doesn't = 0, then the point will not be on the x-axis.

Step-by-step explanation:

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A ladder 10 ft long rests against a vertical wall. Let theta be the angle between the top of the ladder and the wall and let be
IgorC [24]

Answer:

5 ft/s

Step-by-step explanation:

Let L be the length of the ladder. The relation between the angle and distance X is:

X = L * sin θ      the change of X will be:

dX/dt = L * cos θ    If we evaluate the expression when θ = π/3, we get the change of X:

dX/dt = 10 * cos(π/3)

dX/dt = 5 ft/s

4 0
3 years ago
The sides of a triangle are represented by 3x-1, 4x+7, and 2x +11. What is th
Finger [1]

Answer:

9x + 17

Step-by-step explanation:

(3x - 1) + (4x + 7) + (2x + 11)

= 3x - 1 + 4x + 7 + 2x + 11

= 3x + 4x + 2x - 1 + 7 +11

= 9x + 17

5 0
1 year ago
Which equations represent the line that is parallel to 3x – 4y = 7 and passes through the point (-4,-2)? Select two
seropon [69]

Answer:

4y = 3x + 4

3x-4y = -4 is correct

Step-by-step explanation:

This is what we do.

We first express the first equation in the form;

y = mx + c

where m represents the slope of the line

Thus we have;

4y = 3x -7

divide through by 4

y = 3/4x -7/4

Thus the slope here is the coefficient of x which is 3/4

Now, since the lines are parallel, it means that their slopes are equal

So the slope of the other line too is 3/4

We now use the point slope form to find the equation of this other line

Mathematically, that would be;

y-y1 = m(x-x1)

where (x1,y1) = (-4,-2)

Substituting this into the point slope equation, we have;

y-(-2) = 3/4(x-(-4))

y + 2 = 3/4(x + 4)

Cross multiply

4y + 8 = 3x + 12

4y = 3x + 12-8

4y = 3x + 4

5 0
3 years ago
On a biased dice the probability of getting 1 is 0.3. The ice is rolled 150 times. How many ones would you expect to roll?
Montano1993 [528]

Answer:  45

=====================================================

Work Shown:

n = number of rolls = 150

p = probability of rolling a "1" = 0.3

n*p = expected number of "1"s that show up out of the 150 rolls

n*p = 150*0.3

n*p = 45

We expect about 45 ones will show up.

8 0
3 years ago
Which of the following figures has a circumference that is closest to 121 inches?
Eduardwww [97]

Answer:

B

a circle with a diameter of 19.3 inches

3 0
2 years ago
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