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3 years ago

Find the value of x. (Note: the line passing through the center of the circle is a diameter)

Mathematics

2 answers:

Gemiola [76]3 years ago

5 0

Answer:

x = 115

Step-by-step explanation:

Guys, the answer really is 115. Make sure you double check all the numbers on your problem. Your problem might be the same shape, but different numbers. The verified answer is correct :)

Harlamova29_29 [7]3 years ago

4 0

We know that

The measure of the interior angle is the half-summit of the arcs that comprise it and its opposite.

see the attached figure with letters to better understand the problem

measure of the arc ADCB is equal to 180 degrees
arc DC=180-(arc BC+arc AD)----> arc DC=180-(60+70)---> 50°
arc DC=50°
so
∡x=(1/2)*[arc AB+arc DC]---> (1/2)*[180+50]----> ∡ x=115°

the answer is
x=115°

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Write 34.8% as a fraction in simplest form.

balandron [24]

Answer:

87/250

Hope this helps!!

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2 years ago

I need to buy some cardboard to build a box 12 inches long, 8 inches wide and 10 inches high. How much cardboard is needed to bu

Sliva [168]

Answer:

960

Step-by-step explanation:

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3 years ago

Number 1 and 2 please (25 points)

Elenna [48]

Answers:

1) $(3x+2)+(4-5x)=-2x+6$

$(3+2i)+(4-5i)=7-3i$

2) $(1-3x)(2+x)=-3x^{2}-5x+2$

$(1-3i)+(2+i)=5-5i$

Step-by-step explanation:

In mathematics there are rules related to complex numbers, specifically in the case of addition and multiplication:

Addition:

If we have two complex numbers written in their binomial form, the sum of both will be a complex number whose real part is the sum of the real parts and whose imaginary part is the sum of the imaginary parts (similarly as the sum of two binomials).

For example, the addition of these two binomials is:

$(3x+2)+(4-5x)=3x-5x+2+4=-2x+6$

Similarly, the addition of two complex numbers is:

$(3+2i)+(4-5i)=3+4+2i-5i=7-3i$ Here the complex part is the number with the $i$

Multiplication:

If we have two complex numbers written in their binomial form, the multiplication of both will be the same as the multiplication (product) of two binomials, taking into account that $i^{2}=-1$ .