3 years ago

Help, this is a course challenge

Mathematics

1 answer:

tankabanditka [31]3 years ago

8 0

Answer:

Step-by-step explanation:

Statements Reasons

1. m∠BAC = m∠DAC = 51° 1). Given

2. AB = AD = 4 2). Given

3. AC = AC 3). Segments are the same length as

themselves.

4. ΔABC ≅ ΔADC 4). Side - Angle - Side property of

congruence.

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Given the line of the best fit for a set of data points with equation y=-5x-2.5 what is the residual for the point (3,6)

HACTEHA [7]

Answer:

The residual of the point $(3,6)$ in the equation $y=-5(x)-2.5$ is $= 23.5$

Step-by-step explanation:

We have been given point $(3,6)$ where $x=3$ .

Now the equation is $y=-5(x)-2.5$ .

Plugging the value of $x=3$ in the equation of $y=-5(x)-2.5$ ,

we have to find the predicted value of y and $y=-5(3)-2.5 =-15-2.5=-17.5$ .

So y predicted $=-17.5$ .

To find the residual point we have to subtract the actual value from the predicted value.

As actual value of $y=6$ along with the points $(3,6)$ .

Residual point = Actual value - Predicted value.

$=6 -(-17.5) =23.5$

So the residual for the point $(3,6)$ is $23.5$ .

7 0

3 years ago

Help me out with this math please

anyanavicka [17]

Answer:

I believe it is C.

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3 years ago

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All of the following have the same value except _____. 9 - 6 9 + (-6) -6 - (-9) 6 - 9

disa [49]

Answer:

6-9

Step-by-step explanation:

9-6=3

9 + (-6) ---> 9-6=3

-6-(-9) --->-6+9=3 (Negative and negative turn to positive

6-9=-3

So, the answer is the last one

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3 years ago

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What is the value of x<br> (5x+1) =45

Lelechka [254]

Answer:

x=8

Step-by-step explanation:

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3 years ago

2.) Of a classroom filled with 20 students, 2 will be selected to stay after school and correct

harina [27]

Answer:

190

Step-by-step explanation:

20C2 = (20*19)/(1*2) = 190

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2 years ago