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natka813 [3]
3 years ago
9

Please help.

Mathematics
2 answers:
inessss [21]3 years ago
5 0
Angles B and D are congruent in kite, so 2 angles are congruent
mojhsa [17]3 years ago
4 0
Hi! :)

In this drawing, it looks like angles B and D are supposed to be congruent to each other. Congruent basically means equal or the same. 

Hope this helps!
You might be interested in
What is the volume of this composite solid?​
vlada-n [284]

Step-by-step explanation:

5×9×12=540

6×9×12÷2=324

324+540=864

5 0
3 years ago
Read 2 more answers
Please help! Find the x-intercepts of the parabola with vertex (-4, 2) and y-intercept (0, -30). Write your answer in this form:
ch4aika [34]
X1-y1
x2-y2

-4-3
0+30

-6
30


the answer would be -0.2
6 0
3 years ago
enter the value of c when the expression 21.2x+c is equivalent to 5.3(4x-2.6). PLEASE GIVE ME AN EXPLANATION AS WELL. I DON’T WA
tamaranim1 [39]
Well, I will not just give you a straight answer, since I do not have the resources to currently do so. But as a tip, I would try the substitution method to get rid of the ‘x’ variable and just solve for ‘c’ like normal. Your main expression should look like this, I believe:

21.2x+c = 5.3(4x-2.6)

To substitute h the is out, you could write this if it feels better for you:

21x+c = y and 5.3(4x-2.6) = y

Hope this helps!
6 0
3 years ago
Find the zeros of y = x2 – 6x – 4 by completing the square.
katrin [286]

Answer:

The solutions to the quadratic equations are:

x=\sqrt{13}+3,\:x=-\sqrt{13}+3

Step-by-step explanation:

Given the function

y\:=\:x^2\:-\:6x\:-\:4

substitute y = 0 in the equation to determine the zeros

0\:=\:x^2\:-\:6x\:-\:4

Switch sides

x^2-6x-4=0

Add 4 to both sides

x^2-6x-4+4=0+4

Simplify

x^2-6x=4

Rewrite in the form (x+a)² = b

But, in order to rewrite in the form x²+2ax+a²

Solve for 'a'

2ax = -6x

a = -3

so add a² = (-3)² to both sides

x^2-6x+\left(-3\right)^2=4+\left(-3\right)^2

x^2-6x+\left(-3\right)^2=13

Apply perfect square formula:  (a-b)² = a²-2ab+b²

\left(x-3\right)^2=13

\mathrm{For\:}f^2\left(x\right)=a\mathrm{\:the\:solutions\:are\:}f\left(x\right)=\sqrt{a},\:-\sqrt{a}

solve

x-3=\sqrt{13}

Add 3 to both sides

x-3+3=\sqrt{13}+3

Simplify

x=\sqrt{13}+3

now solving

x-3=-\sqrt{13}

Add 3 to both sides

x-3+3=-\sqrt{13}+3

Simplify

x=-\sqrt{13}+3

Thus, the solutions to the quadratic equations are:

x=\sqrt{13}+3,\:x=-\sqrt{13}+3

4 0
3 years ago
Ellie has 4 quarters for every 5 pennies in her change purse. How many pennies would she have if she has 16 quarters?
Natali [406]
Sh would have 20 pennies because for every 5 pennies there 4 quarters so , if she has 16 quarters she would have 20 pennies
3 0
3 years ago
Read 2 more answers
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