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3 years ago

I need help with 11 and 12 I’m not sure

Mathematics

2 answers:

Vlad1618 [11]3 years ago

8 0

Answer:

11. is false

12. is true

Step-by-step explanation:

everything is based on the angle

nekit [7.7K]3 years ago

6 0

11 is false and 12 is true

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It's correct, the answer A is correct

galben [10]

OK????????????????????????????

5 0

3 years ago

While John is traveling along a straight interstate highway, he notices that the mile marker reads 243 km. John travels until he

loris [4]

Answer:

The displacement is: - 80 i

Step-by-step explanation:

In order to answer the question, you have to apply the displacement formula, which is:

ΔX= Xf-Xi

Where ΔX is the displacement, Xf is the final position and Xi is the initial position. The formula represents the change in the position of an object from the origin.

Let the origin be in 0 km,with the x-axis positive to te right.

Notice that the displacement is a vector. The positions are:

Xf=163 km (i)

Xi= 243 km (i)

Because John starts in 243 km and finishes in 163 km.

Where i is the unit vector in the x direction.

Therefore:

ΔX= 163 i - 243 i

Solving:

ΔX= -80 i

Notice that for calculating the displacement you just need the initial and final position. It doesn't depend on the distance traveled.

3 0

3 years ago

the measure of angle s = 30 degrees, the measure of arc RS = 84 degrees and line RU is tangent to the circle at R. Find m angle

Paul [167]

Let O be the center of a circle. If the measure of arc RS is 84 degrees, then m∠SOR=84^{0}. The triangle SOR is isoscales (because SO=OR as radii), so m∠RSO=m∠ORS=(180^{0}-84^{0}):2=48^{0}.

Line RU is tangent to the circle in point R, this means that m∠ORU=90^{0}.
Consider the triangle SRU. m∠RSU=30^{0} and m∠SRU=48^{0}+90^{0}=138^{0}, then m∠RUS=180^{0}-30^{0}-138^{0}=12^{0}.
ANSWER: Correct choice B - 12^{0}.

3 0

3 years ago

Read 2 more answers

Ezra counts the number of passengers who are already on the bus when he gets on each morning. His data for the last 15 days are

Rom4ik [11]

Answer:

Step-by-step explanation:

The data is

8,9,9,10,12,12,13,14,15,15,15,16,18,19,20

There are 15 data points

The median is the 15/2 = 7.5 rounding to 8

The 8th data point

8,9,9,10,12,12,13, 14, 15,15,15,16,18,19,20

Take the 7 points on the left and divide in half

Take the 7 points on the right and divide in half

8,9,9, 10 ,12,12,13, 14, 15,15,15, 16, 18,19,20

The interquartile range is the middle of the upper half of the data minus the middle of the lower half of the data

16 - 10 = 6

5 0

4 years ago

Help Plss simply can u show step by step ?-4(8x-4)+3x

Vikentia [17]

Answer:

-4(8x-4)+3x = -29x+16

Step-by-step explanation:

1. Simplify -4(8x-4) by using the distribution property:

-4(8x) = -32x and -4(-4) = 16 so -4(8x-4) = -32x+16

2. Add 3x to the remaining equation:

-32x+16+3x = -29x+16

3. The answer is:

-29x+16

6 0

3 years ago