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2 years ago

12

A class contains 8 boys and 14 girls. Two of the students are to be selected as student council representatives. What is the pro

bability both are boys?
A. 1/4
B. 29/240
C. 4/11
D. 4/33

1 answer:

erastova [34]2 years ago

4 0

The answer is 3/10 but that’s not one of your options

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If f(x)=2x^2+1,what is f(x) when x=3

REY [17]

Answer:

f(3) =19

Step-by-step explanation:

f(x)=2x^2+1

Let x = 3

f(3) = 2(3)^2 +1

Exponents first

=2(9) +1

Then multiply

=18+1

=19

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2 years ago

An inscribed angle that opens to a diameter has an intersected arc that is a ________________. The angle is a ______ angle becau

kherson [118]

Answer:

An inscribed angle that opens to a diameter has an intersected arc that is 180 degrees. The inscribed angle is a right angle (90 degrees) because

$\frac{1}{2}(180^o)=90^o$

Step-by-step explanation:

we know that

The inscribed angle is half that of the arc comprising

Remember that

The diameter divide the circle into two equal parts

so

An inscribed angle that opens to a diameter has an intersected arc that is 180 degrees

The inscribed angle is 90 degrees because

$\frac{1}{2}(180^o)=90^o$

therefore

An inscribed angle that opens to a diameter has an intersected arc that is 180 degrees. The inscribed angle is a right angle (90 degrees) because

$\frac{1}{2}(180^o)=90^o$

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2 years ago

The measure of the supplement of an angle is 46 more than 3 times the complement of the angle. Find the angle.

Marta_Voda [28]

Answer:

45 degrees

Step-by-step explanation:

Let the angle to be solved be

x

Let the supplement/compliment by

y

x+

y=90

Complimentary angles add up to 90 degrees.

x+3

y=180

Supplementary angles add up to 180 degrees, the other angle is thrice the other compliment.

Evaluating this as a system:x+y=90 Isolate x:x=90−y Input into the other equation:(90−y)+3y=180Combine like terms, isolate y and its coefficients:2y=90 Isolate yy=45 Input into the first equation:x+45=90 Isolate x:x=45 degrees

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2 years ago

Compare The ruler you made to an inch ruler. Describe how they are alike and how are diferente

xz_007 [3.2K]

They are different from sizes like inches,feet,centimeters.

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2 years ago

Pete sold 320 boxes of donuts with a dozen in each box. How many donuts did he sale in all?

Nata [24]

Answer:

3840

Step-by-step explanation:

320 boxes; 12 donuts in each box

This is a multiplication problem.

320 × 12 = 3840

Answer: 3840

7 0

1 year ago

Read 2 more answers