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3 years ago

How can you use distance and slope formulas to classify quadrilaterals?

2 answers:

8 0

If the four pairs of intersecting lines have opposite reciprocal slopes, they have 90 degree angles. If the distance of all the sides are the same, it’s a square.

vaieri [72.5K]3 years ago

7 0

Sse the distance formula to find the length of the sides... opposite sides equal it could be a rectangle or parallelogram all sides equal, square or rhombus adjacent equal, kite and then the slope is used to check angles if the product of the 2 lines in -1 the lines are perpendicular (right angle) the the slopes of 2 lines are the same the sides are parallel. hope it helps.

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Using the net below, find the surface area

polet [3.4K]

Answer:

56 cm^2

Step-by-step explanation:

Surface area is just finding the areas of each face in a figure. As we are given a net of a figure, it is much easier for us to calculate it.

Area of square base (side^2)

4^2 = 16 cm^2

Area of ONE triangular face (1/2 x b x h):

1/2 x 4 x 5 = 10 cm^2

Multiply that by 4 because we have 4 triangular faces: 10 cm^2 x 4 = 40 cm^2

ADD all the areas of triangles and square:

16 cm^2 + 40 cm^2 = 56 cm^2

HOPE THIS HELPS

Have a nice day!

4 0

3 years ago

Divide and Round your answer to the nearest hundredth: 32.503/4.9

timurjin [86]

Answer:

6.63

Step-by-step explanation:

4 0

4 years ago

Read 2 more answers

The function below crosses thr x-axis once. Y=3×2-8x+8

lukranit [14]

It will be at point (5,5)

4 0

3 years ago

Someone please help :)<br> Both pls :)) also ill try Mark u brainliest <33 please answer both :3

Svetradugi [14.3K]

Step-by-step explanation:

5. 56÷4 = 14

6. (2 × 27) - 3 × 5 - 8

54 - 15 - 8

39 - 8 = 31 ans.

Hope this answer helps you!

5 0

2 years ago

Read 2 more answers

An experiment was conducted to investigate whether there is a difference in mean bag strengths for two different brands of paper

Elanso [62]

Answer:

A two-sample t-test for a difference between sample means

Step-by-step explanation:

<u>Explanation</u>:-

A random sample of 50 bags from each of Brand X and Brand Y was selected

Given two sample sizes n₁ and n₂

Each bag was held from its rim, and one-ounce weights were dropped into the bag one at a time from the same height until the bag ripped

mean of ounces the first sample = x⁻

mean of the second sample =y⁻

Given data one-ounce weights were dropped into the bag one at a time from the same height until the bag ripped

Standard deviation of the first sample = S₁

Standard deviation of the second sample = S₂

Now we use t - distribution for a difference between the means

$t = \frac{x^{-} -y^{-} }{\sqrt{S^{2}(\frac{1}{n_{1} } +\frac{1}{n_{2} } } }$

where

$S^{2} = \frac{n_{1} S_{1} ^{2} +n_{2}S_{2} ^{2} }{n_{1} +n_{2} -2 }$

Degrees of freedom γ = n₁ +n₂ -2

3 0

4 years ago