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3 years ago

Evaluate the problem 3.14(6 × 4 + 6^2)

Mathematics

2 answers:

omeli [17]3 years ago

7 0

The answer is 188.4.

diamong [38]3 years ago

3 0

Answer:

188.4

Step-by-step explanation:

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I need help on 6. 7. 8. Help

e-lub [12.9K]

Number 6 is 10:10 The first plane arrives at 6:50 you add 50 minutes to that and keep adding 50 minutes until you get to after 10:00 because it says his plane arrived after 10:00.

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3 years ago

Sergey is solving 5x2 + 20% – 7 = 0. Which steps could he use to solve the quadratic equation by completing the

Mrac [35]

Answer:

$5(x^2+4x)=7$

$5(x^2+4x+4)=7+20$

$(x+2)=\pm\sqrt{\frac{27}{5}}$

Step-by-step explanation:

we have

$5x^2+20x-7=0$

step 1

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$5x^2+20x=7$

step 2

Factor 5 left side

$5(x^2+4x)=7$

step 3

Complete the square

$5(x^2+4x+2^2)=7+2^2(5)$

$5(x^2+4x+4)=7+20$

$5(x^2+4x+4)=27$

step 4

Rewrite as perfect squares

$5(x+2)^2=27$

step 5

$(x+2)^2=\frac{27}{5}$

$(x+2)=\pm\sqrt{\frac{27}{5}}$

$(x+2)=\pm\frac{3\sqrt{15}}{5}$

step 6

$x=-2\pm\frac{3\sqrt{15}}{5}$

6 0

3 years ago

Read 2 more answers

this picture represents 1-4 of the distance from maria house to the park which represents the whole distance?

saveliy_v [14]

There is no picture provided sorry.

4 0

2 years ago

Tipp city has approximately 9,900 people.each person has 2 hands and each hand has 5 fingers. how many fingers are in tipp city

anzhelika [568]

9900 x 10 = 99000 # of fingers

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3 years ago

What is the value of x?

REY [17]

Answer:

The missing side has a length equal to $15\sqrt{3}$

Step-by-step explanation:

We need to find the length of the missing side on the right triangle. We were given the length of the hypotenuse, and the opposite cathetus, therefore we can use the sine relation. This is done below:

$sin60=\frac{x}{30}\\\frac{\sqrt{3}}{2}=\frac{x}{30}\\x=15\sqrt{3}$

5 0

2 years ago