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rewona [7]
2 years ago
13

The following relation is a function: {(-8, – 9), (-4, 5), (1, 5), (4, 7)}

Mathematics
1 answer:
Nookie1986 [14]2 years ago
5 0

Answer:

Yes

Step-by-step explanation:

The following relation is a function. When graphed, it passes the vertical line test, and you don't go across any two points at the same time. So therefore, it is a function. Another easy way to determine if the relation is a function is by taking a look at the x-coordinates. If any x-coordinates are the same, then it's not a function. If all x-coordinates are the same, then it's a function.

Hope this helps. Please mark brainliest.

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Are these triangles similar? if so, what postulate or theorem justifies that they are similar?
Karo-lina-s [1.5K]

Answer:

Yes The triangles are similar by SAS Similarity Theorem

Step-by-step explanation:

we know that

<u>Side-Angle-Side Similarity,</u> states that If an angle of a triangle is congruent to an angle of another triangle and if the included sides of these angles are proportional, then the two triangles are similar

In this problem

Angle  L is congruent with Angle Z

so

Verify if the included sides are proportional

so

\frac{LJ}{ZY}=\frac{KL}{XZ}

substitute the values

\frac{3}{1.5}=\frac{4}{2}

2=2 -----> is true

therefore

The triangles are similar by SAS

7 0
3 years ago
For the graphed exponential equation, calculate the average rate of change from x = 1 to x = 4.
zhenek [66]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Solve the equation. Show work for partial credit.
Natali5045456 [20]

Answer:

x = \frac{8}{5}

Step-by-step explanation:

Given

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\frac{8}{x} = 5 ( multiply both sides by x )

8 = 5x ( divide both sides by 5 )

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8 0
3 years ago
The pyramid shown has a square base that is 18 inches on each side. It has a surface area of 864 square inches. What is the slan
disa [49]
The first step is to find the relationship between the square base and the surface area.

Surface area (SA) = area of the square (SS) + area of triangles.4(AT) 

Thus we can conclude area of triangles 4(AT) = SA - SS = 864 - (18*18)

4(AT) = 864 - 324 = 540

Each triangle = 540/4 = 135 square in.

An area of one triangle (AT)= (base* slant height)/2

The base = 18 in.

<span>slant height = 2(AT)/base = 2(135)/18 = 15</span>
3 0
3 years ago
What is 62.4 as a fraction and simplified?
kumpel [21]

Answer:

62 2/5

Step-by-step explanation:

62 is just the whole number and then you have 4 tenths, which is 4/10 which can be simplified to 2/5, so it's 62 2/5

6 0
2 years ago
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