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Natalija [7]
3 years ago
6

-8 -3 8 M= - 3 --4.5

Mathematics
1 answer:
Gre4nikov [31]3 years ago
8 0

Answer:

Step-by-step explanation:-7/2

is the answer

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A projectile is fired directly upward. The compound inequality 89 – 9.8t < 10.6 or 89 – 9.8t > 20.4 represents a projectil
Tom [10]

Given compound inequality 89 – 9.8t < 10.6 or 89 – 9.8t > 20.4.

Let us solve them one by one.

89 – 9.8t < 10.6

Subtracting 89 from both sides, we get

89-89 – 9.8t < 10.6 - 89

-9.8t < -78.4

Dividing both sides by -9.8, we get

t > 8.

<em>Note: Inequality sign get flip on dividing both side by a negative number.</em>

89 – 9.8t > 20.4

Subtracting 89 from both sides, we get

89-89 – 9.8t < 20.4 - 89

-9.8 t < - 68.6.

Dividing both sides by -9.8, we get

t < 7

<em>Note: Inequality sign get flip on dividing both side by a negative number.</em>

<h3><em> The solution to the inequality 89 – 9.8t < 10.6 is </em>t > 8. </h3><h3> The solution to the inequality 89 – 9.8t > 20.4 is t < 7.</h3>

When the projectile hits the ground:

89 – 9.8t = 0

Subtracting 89 from both sides, we get

89 - 89 – 9.8t = 0 -89.

-9.8t = -89.

Dividing both sides by 9.8, we get

<h3>to the nearest whole second  t is about 9 seconds.</h3><h3>Therefore, variable solution set is {t < 7, t > 8, t = 9}.</h3><h3 />
7 0
3 years ago
Read 2 more answers
The product of two numbers is the same as one of the factors. How can you use properties of multiplication to determine what the
Bess [88]
It will be as I understand:

(x*y)=x
<span>
or (x*y)=y</span>
4 0
3 years ago
Umm pls help me ik how to do it but not sure on this specific one
Lapatulllka [165]

9514 1404 393

Answer:

  -8, +9

Step-by-step explanation:

You need factors of (6)(-12) = -72 that have a sum of +1.

From your knowledge of multiplication tables, you know that 72 = 8·9. Then -72 = (-8)(9), and those two factors have a sum of +1.

  6x^2 +x -12

  = 6x^2 +9x -8x -12

  = 3x(2x +3) -4(2x +3)

  = (3x -4)(2x +3)

8 0
3 years ago
)A class has 9 boys and 15 girls. What is the ratio in simplest form that compares number of boys to total number of students?
Bond [772]

Answer:

3:5

Step-by-step explanation:

3, 6, 9.

5, 10, 15.

always see which numbers fit and which numbers dont

4 0
3 years ago
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Select the correct answer. Leeann works 20 hours per week and makes $15 per hour. What is her yearly pay? A. $10,100 B. $12,500
Tpy6a [65]

Answer:C

Step-by-step explanation:

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3 years ago
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