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3 years ago

What is the value of the expression 4b2+11 when b=5?

Mathematics

1 answer:

fomenos3 years ago

8 0

Step-by-step explanation:

The value of the expression 4b^2+11 when b=5 is

4×5^2+11

100+11

111

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anastassius [24]

$23.34 - 40% will make it $14

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3 years ago

Please help me ASAP please

Vladimir79 [104]

Answer:

Equation: 45 - 21 = s

The second answer is 24.

You can check by adding 24 + 21 which is 45.

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3 years ago

The regular octagon has a perimeter of 122.4 cm. Which statements about the octagon are true? Check all that apply.

Papessa [141]

Answer:

The length of segment XY can be found by solving for a in

$20^2-7.65^2=a^2$

The measure of the central angle $\angle ZXW$ is $45\degree$ .

Step-by-step explanation:

If the regular octagon has a perimeter of 122.4cm, then each side is $\frac{122.4}{8}=15.3cm$

The measure of each central angle is $\frac{360\degree}{8}=45\degree$

The angle between the apothem and the radius is $\frac{45}{2}=22.5\degree$

The segment XY=a is the height of the right isosceles triangle.

We can use the Pythagoras Theorem with right triangle XYZ to get:

$a^2+7.65^2=20^2$

$a^2=20^2-7.65^2$

Therefore, the correct options are:

The length of segment XY can be found by solving for a in

$20^2-7.65^2=a^2$

The measure of the central angle $\angle ZXW$ is $45\degree$ .

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4 years ago

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Umnica [9.8K]

Answer:

FG = 16

Step-by-step explanation:

if df bisects <edg then triangles DFE and DFG are similar AAA

since DF is the same in both triangles triangles DFE and DFG are congruent

therefore FE = FG

n+5 = 2n-6

subtract n from each side

n-n+5 = 2n-6-n

5 = n-6

add 6 to each side

5+6 = n

n=11

FG = 2n-6

=2*11 -6

= 22-6

= 16

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3 years ago

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Answer:

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Step-by-step explanation:

12+3=15

There are 5 lead roles meaning that you do 5/15=.33 or 1/3

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3 years ago