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3 years ago

What is a quadrilateral that is not a parallelogram

Mathematics

2 answers:

Kazeer [188]3 years ago

7 0

Answer:

trapezium

Step-by-step explanation:

A trapezium is the quadrilateral that is not a parallelogram as its two sides are not parallel.

ehidna [41]3 years ago

3 0

Answer:

Kite

Step-by-step explanation:

The kite has lines that criss cross which are not parallelograms.

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On a cold day, hailstones fall with a velocity of 2i − 6k m s−1 . If a cyclist travels through the hail at 10i m s−1 , what is t

Paraphin [41]

Answer:

The velocity of the hail relative to the cyclist is $V_{hc}=-8\hat{i}-6\hat{k}$

The angle at which hailstones falling relative to the cyclist is $\theta = 36.86^\circ$

Step-by-step explanation:

Given : On a cold day, hailstones fall with a velocity of $2\hat{i}-6\hat{k}\text{ m/s}$ . If a cyclist travels through the hail at $10\hat{i} \text{ m/s}$ .

To find : What is the velocity of the hail relative to the cyclist and At what angle are the hailstones falling relative to the cyclist?

Solution :

The velocity of the hailstone falls is $V_h=2\hat{i}-6\hat{k}\text{ m/s}$

The velocity of the cyclist travels through the hail is $V_c=10\hat{i} \text{ m/s}$

The velocity of the hail relative to the cyclist is given by,

$V_{hc}=V_h-V_c$

Substitute the value in the formula,

$V_{hc}=2\hat{i}-6\hat{k}-10\hat{i}$

$V_{hc}=-8\hat{i}-6\hat{k}$

So, The velocity of the hail relative to the cyclist is $V_{hc}=-8\hat{i}-6\hat{k}$

Now, The angle of hails falling relative to the cyclist is given by

$\theta = \tan^{-1}(\frac{-6}{-8})$

$\theta = \tan^{-1}(\frac{3}{4})$

$\theta = 36.86^\circ$

So, The angle at which hailstones falling relative to the cyclist is $\theta = 36.86^\circ$

4 0

4 years ago

Which statements are true?

S_A_V [24]

D. some parallelograms are squares

3 0

3 years ago

Which formula used in probability to find Independence question

qwelly [4]

Answer:

Events A and B are independent if the equation P(A∩B) = P(A) · P(B) holds true. You can use the equation to check if events are independent; multiply the probabilities of the two events together to see if they equal the probability of them both happening together.

3 0

3 years ago

Read 2 more answers

I need help badly please help

TiliK225 [7]

Answer:

10. The triangles are similar.

11. The slope of the line is $\displaystyle \frac{2}{3}$ .

12. The given equation is incorrect.

13. They have the same slope.

Step-by-step explanation:

Hi there!

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These two triangles are similar. They share angle QPT, and angles PTQ and PSR are have the same measure as well. Because these triangles share two congruent angles, they are therefore similar.

This is the AA similarity theorem, which states that if two angles in one triangle are the same as two angles of another, the two triangles are therefore similar.

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Points P and R both fall onto the line on the graph. The slope of a line is equal to its "rise over run", or "the number of units the line travels up" over "the number of units the line travels to the right".

Notice how, on the graph, for every 2 units the line travels up, it travels 3 units to the right.

Therefore, the slope of the line is 2 over 3, or $\displaystyle \frac{2}{3}$ .

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Linear equations are typically organized in slope-intercept form, which looks like this: $y=mx+b$ where m is the slope and b is the y-intercept, or the value of y when the line crosses the y-axis.