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Harlamova29_29 [7]
3 years ago
15

To the nearest tenth of a second, how much time would it take the penny to hit the ground?

Mathematics
2 answers:
anzhelika [568]3 years ago
8 0
Your answer is 0.7 seconds
NemiM [27]3 years ago
6 0

Answer:

C (0.7)

Step-by-step explanation:

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What is the value of the expression - x [ 6 + ( 4 x 2 ) ] - 5
jonny [76]
1.-x[6+(4*2)]-5, first do the things in the parenthesis: 4*2=8, then +6=14 then *-x=-14x and keep the -5
-14x-5
6 0
3 years ago
Each music class sings 8 songs a week.How many does each class sing in 5 weeks? 6 weeks? 7 weeks?
Scilla [17]

In 5 weeks they sing 280, in 7 weeks they sing 392, and in 6 weeks they sing 336. For this problem you have to figure out how days are in a week n multiply that by the number of songs they give you n then you have to multiply that by how many weeks they give you n then u keep repeating these steps until you ate done with all of your problems n you get your answer

7 0
3 years ago
Melanie's car payment was $511 a month. She also paid $159 a month for insurance. How much does Melanie spend in 12 months on he
Georgia [21]

Answer:

$8040 spent on her car and insurance payments.

Step-by-step explanation:

511 + 159 = 670

670 times 12 = 8040

7 0
2 years ago
Read 2 more answers
PLEASE HELP!! Compare & Contrast how Completing the Square is used to Convert a quadratic function to vertex form with how i
Likurg_2 [28]

Answer:

Step-by-step explanation:

Given a general quadratic formula given as ax²bx+c = 0

To generate the general formula to solve the quadratic equation, we can use the completing the square method as shown;

Step 1:

Bringing c to the other side

ax²+bx = -c

Dividing through by coefficient of x² which is 'a' will give:

x²+(b/a)x = -c/a

- Completing the square at the left hand side of the equation by adding the square of half the coefficient x i.e (b/2a)² and adding it to both sides of the equation we have:

x²+(b/a)x+(b/2a)² = -c/a+(b/2a)²

(x+b/2a)² = -c/a+(b/2a)²

(x+b/2a)² = -c/a + b²/4a²

- Taking the square root of both sides

√(x+b/2a)² = ±√-c/a + b²/√4a²

x+b/2a = ±√(-4ac+b²)/√4a²

x+b/2a =±√b²-4ac/2a

- Taking b/2a to the other side

x = -b/2a±√√b²-4ac/2a

Taking the LCM:

x = {-b±√b²-4ac}/2a

This gives the vertex form with how it is used to Solve a quadratic equation.

7 0
2 years ago
HEy i need to know what 2x+5=10 solve for x
Mama L [17]
X=2.5

subtract 5 from both sides and then divide 5 by 2.
8 0
2 years ago
Read 2 more answers
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