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3 years ago

∆ABC is reflected about the line y = -x to give ∆A'B'C' with vertices

1 answer:

4 0

Since A‘(-1,1) is on the line y=-x, reflecting it about the line doesn't change its coordinate, so A's coordinate is (-1,1). Reflecting B'(-2,1) about y=-x switches both the sign and the number of x and y, so B=(-1,2), and C'(-1,0) becomes C(0,1). Drawing out the graph with the points and the line helps.

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It is 76°f at the 6000-foot level of a mountain, and 49°f at the 12,000-foot level of the mountain. write a linear equation to f

valina [46]

Answer:

$t(x) = 103 -0.0045x$

Step-by-step explanation:

We are given the following in the question:

Let the equation:

$t(x) = a + bx$

be the linear equation that represent temperature at an elevation x.

Temperature at 6000-foot level = 76 f

$76 = a + 6000b$

Temperature at 12000-foot level = 49 f

$49 = a + 12000b$

Solving the two equation, we get,

$76-49 = -6000b\\27=-6000b\\\\b = \dfrac{-27}{6000}\\\\b = -0.0045\\76 = a + (-0.0045)6000\\76 = a -27\\a = 76 + 27\\a =103$

Thus, we can write the linear equation as:

$t(x) = 103 -0.0045x$

5 0

3 years ago

Sum to n terms series 2.3+3.4+4.5+…<br>

mart [117]

Answer:

5.6

Step-by-step explanation:

3.4-2.3=1.1

2.3+1.1=3.4

3.4+1.1=4.5

4.5+1.1=5.6

3 0

3 years ago

The price for each reindeer harness is 17.95 what is the price for reindeer harnesses? Challenge if tax rate is 14% , how much w

mafiozo [28]

To find the percentage of any number you divide your percentage by 100 to get a decimal. 14 ÷ 100 =0.14 then in this case you need to find the number you want to find 14% of . Each reindeer harness is 17.95 so 17.95 * 9 = 161.55 so now you take 161.55 and multiply it by the decimal to get the percentage of 161.55 which equals 22.617 so now add the tax and the cost of the reindeer harnesses and you got your answer :)

5 0

3 years ago

Read 2 more answers

Help pls this is for my math test.

Stells [14]

Answer:

D is the answers for the question

Step-by-step explanation:

please mark me as brainlest

5 0

3 years ago

Read 2 more answers

In a poll, 6 out of 13 children said they read every night before bed, whereas 54% of the adults said they read every night befo

Tpy6a [65]

To answer this question you must find the percentage of the children that read before bed and compare it to the adults bag read before bed’s percentage.
To do this, start by dividing the number of children that read before bed by the total number of children surveyed.
This leaves you with:
6/13= 0.4615

To find the actual percentage, multiply this result by 100.
0.4615 x 100 = 46.15
This percentage rounded is 46%

So, now you can compare the percentages. The percentage of children that read before bed is 46% and the percentage of adults that read before bed is 54%. So, the group with the greatest percentage was the adults.

I hope this helps!

3 0

3 years ago