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snow_tiger [21]
3 years ago
13

15 A. Really need help!

Mathematics
1 answer:
strojnjashka [21]3 years ago
5 0

Angles DBA and CBE are congruent because they form a vertical pair.

The interior angles of any triangle sum to 180º in measure, so it follows that angles A and E must be congruent.

You might be interested in
The function y = x 2 - 10x + 31 has a ____
katrin [286]

Answer:

Option B. minimum is correct for the first blank

Option C. 6 is correct for second blank.

Step-by-step explanation:

In order to find the maxima or minima of a function, we have to take the first derivative and then put it equal to zero to find the critical values.

Given function is:

f(x) = x^2-10x+31

Taking first derivative

f'(x) = 2x-10

Now the first derivative has to be put equal to zero to find the critical value

2x-10 = 0\\2x = 10\\x = \frac{10}{2} = 5

The function has only one critical value which is 5.

Taking 2nd derivative

f''(x) =2

f''(5) = 2

As the value of 2nd derivative is positive for the critical value 5, this means that the function has a minimum value at x = 5

The value can be found out by putting x=5 in the function

f(5) = (5)^2-10(5)+31\\=25-50+31\\=6

Hence,

<u>The function y = x 2 - 10x + 31 has a minimum  value of 6</u>

Hence,

Option B. minimum is correct for the first blank

Option C. 6 is correct for second blank.

8 0
3 years ago
Solve the simultaneous equations:<br><br> 3a-2b=14 <br> 12a+9b=39
kirill [66]
Use elimination
Multiply first equation by 4
12a - 8b = 56
12a + 9b = 39
Subtract both
-17b = 17
b = -1
Plug in -1 for b
3a - 2(-1) = 14
3a = 12, a = 4
Final answer: a = 4, b = -1
5 0
2 years ago
Vinny decorated 72 cookies and 36 minutes how many cookies did you decorate per minute
SCORPION-xisa [38]
2 cookies. 72/36= 2 cookies per minute. 
6 0
3 years ago
Amina has 6 ¾ L of juice that she wants to pour into ¾ L containers. What is the number of containers that she can fill?
dolphi86 [110]

Answer:

She can fill 9 containers

Step-by-step explanation:

you do 6 3/4 dived by 3/4 and you get 9

4 0
2 years ago
Can people please help me on this
zmey [24]

let <ACB=<C,

Here h=26 due to opposite to right angle is hypotenuse and b=10 Is a base and p=24 due to opposite to the angle <C

so,

Cos<C=b/h

=10/26

=5/13

4 0
3 years ago
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