3 years ago

AC is a diameter of D , and m BDC = 70°. What is the measure of ADB ?

Mathematics

1 answer:

SVEN [57.7K]3 years ago

7 0

Answer:

110

Step-by-step explanation:

180 - 70 = 110

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A man loses 20 percent by selling an article for 11. What was the cost price of the article

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Answer:

11.2

Step-by-step explanation:

Because

x-20%=11

x-0.2=11

x=11.2

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4 years ago

What is the constantof 24x+32+4x+3

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Step-by-step explanation:

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4 years ago

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A construction company wants to build an auditorium on a trapezium shaped plot measuring 410m2. One of the parallel sides of the

Assoli18 [71]

Answer:

other parallel side is 23m

Step-by-step explanation:

Let's assume other parallel sides as 'x'

One of the parallel sides of the trapezium plot measure 18m

so, y=18

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so, h=20

now, we can use area of trapezium formula

$A=\frac{1}{2}\times h \times (x+y)$

now, we can plug values

$A=\frac{1}{2}\times 20 \times (x+18)$

we can set A=410

and then we can solve for x

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$10\left(x+18\right)=410$

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4 years ago

Square the binomial below:<br> (x– 4)

likoan [24]

Answer:

x^2-8x+16

Step-by-step explanation:

(x-4)^2

x^2-4x-4x+16

x^2-8x+16

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3 years ago

How to solve this system of equal: x+y+z=1;x^2+y^2+z^2=1

swat32

There are infinitely many solutions.

Algebraically, we can eliminate $z$ and try to solve for $x,y$ :

$x+y+z=1\implies z=1-x-y$

Then

$x^2+y^2+(1-x-y)^2=1$

$\implies x^2+y^2+1-2x+x^2-2y+y^2+2xy=1$

$\implies x^2-x+y^2-y+xy=0$

which is the equation of an ellipse.

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4 years ago