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3 years ago

Secants BE and CF intersect at point D inside A. What is the measure of CDE?

Mathematics

1 answer:

Aleks04 [339]3 years ago

6 0

MCE = 360 - (150 + 70 + 50)
mCE = 360 - 270
mCE = 90

<CDE = 1/2(mBE + mCE)
<CDE = 1/2(150 + 90)
<CDE = 1/2(240)
<CDE = 120

answer
<CDE = 120°

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The number of bacteria in a certain culture doubled every hour. If there were 30 bacteria present in the culture initially, how

vichka [17]

Answer:

The number of bacteria after $8th$ will be $3840$

Step-by-step explanation:

Given the initially 30 bacteria present in the culture.

Also, the number of bacteria got doubled every hour.

So, using the equation

$A=A_0r^{n-1}$

Where $A$ is number of bacteria after $n$ hours.

$A_0$ is bacteria present initially.

$r$ is the common ration, in our problem it is given that bacteria doubles every hour. So, $r=2$

And $n$ is the number of hours. In our problem we need amount of bacteria at the end of $8th$ hours. So, $n=8$

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So, number of bacteria after $8th$ will be $3840$

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Angie bought a shirt that was priced at 16.50.She paid 18.82 at the counter . what is the tax rate. Step by step

erastovalidia [21]

Answer:

The price: 16.5

The total payment: 18.82

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2 years ago

If x = 10, what is the first step you would do to answer 3x 2

Vinvika [58]

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3 years ago

A semi-circle window can be used above a doorway or as an accent window

anzhelika [568]

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A circle is a shape that is bounded by a curved path which is referred to as the circumference. Some parts of a circle are radius, diameter, sector, arc, semi-circle, circumference, etc.

A semicircle is a part of a circle, and it is referred to as half of a given circle.

such that:

Area of a circle = $\pi$ $r^{2}$

and

area of a semicircle = $\frac{\pi r^{2} }{2}$

where: r is the radius of the circle, and $\pi$ is a constant with a value of $\frac{22}{7}$ .

Thus from the given question, it can be inferred that;

r = $\frac{50}{2}$

= 25

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Thus, the area of the semi-circle can be determined as;

area of the semi-circle = $\frac{1}{2}$ * $\frac{22}{7}$ * $25^{2}$

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for more clarifications on the area of a semi-circle, visit: brainly.com/question/15937849

#SPJ 1

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