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3 years ago

Find Slope -5,3 and 7,8

Mathematics

2 answers:

hodyreva [135]3 years ago

6 0

Answer:

5/12.

Step-by-step explanation:

Slope = (y2 - y1) / (x2 - x1) where the 2 points are (x1, y1) and (x2, y2).

So here it is:

(8 - 3)/ (7 - (-5))

= 5/12.

34kurt3 years ago

3 0

Answer:

5/12

Step-by-step explanation:

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3 years ago

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The figure is a parallelogram. One diagonal measures 28 units.

Georgia [21]

Answer:

It is not a rectangle

Step-by-step explanation:

A rectangle is a shape with 4 sides, such that we have two pairs of parallel sides, where the length of the parallel sides is equal.

so we have two parallel sides with length L and two parallel sides with length L'.

In this figure ,we can see two sides with length 20 and other two with length 21, and this is a rectangle only if the sides meet at 90°degree angles (this would mean that the opposite sides are parallel)

To see this, we can think that the triangle formed by the diagonal and two sides is a triangle rectangle, then using the Pythagorean theorem we should have that:

20^2 + 21^2 = 28^2

841 = 784

So this is not a triangle rectangle, meaning that the angle between the side of 20 and the side of 21 is not a right triangle, then the figure is not a rectangle.

Therefore, it is not a rectangle

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3 years ago

Select all the options that have the same value as 3 1/2% of 20?

r-ruslan [8.4K]

Solution:

As, we have to find , $3 \frac{1}{2} of 20=\frac{7}{2}$ % of 20

$= \frac{7}{2\times 100}\times 20\\\\ = \frac{7}{10} \\\\ =0.70$

If we have to Percent of a certain number it means , divide that number by 100 , for example x% means $\frac{x}{100}$ .

And if i am writing , x% of y it means , $\frac{xy}{100}$ .

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3 years ago

Sam is saving for a guitar. He already has $50 saved and intends to save $30 each week. Sam found a guitar that costs $410. Afte

maxonik [38]

Answer:

12 weeks

Step-by-step explanation:

30 x 12 = 360

which equals 12 weeks in this case and 360 + 50 equals 410 the 50 came from the 50 he already had

I hope this helps!!

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3 years ago

4. In the diagram, ABCD is a straight line. Calculate the values of x and y.

kykrilka [37]

Answer:

x is 108° and y is 144°

Step-by-step explanation:

for x:

$x + 36 \degree + 36 \degree = 180 \degree \\ \{isoceles \: triangle \: angle \: sum \} \\ x + 72 \degree = 180 \degree \\ x = 180 \degree - 72 \degree \\ x = 108 \degree$

for y:

$y + 36 \degree = 180 \degree \\ \{straight \: line \: angles \} \\ y = 180\degree - 36\degree \\ y = 144\degree$

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3 years ago

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