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katrin2010 [14]
3 years ago
5

MATH Intervention Math - Unit 2: Expressions, Sequences, and Logic

Mathematics
1 answer:
scZoUnD [109]3 years ago
7 0
Huh this gives out no information to answer
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Which expression represents a positive number? A. -9.8 x (-23.5) B. 9.8 x (-23.5) C. 23.5 x (-9.8) D. -23.5 x 9.8
Temka [501]

Answer: Option A

Step-by-step explanation: if we multiply two negative numbers we get a positive result, pls give brainliest

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You are swimming each 25 yard length of a swimming pool 3 seconds faster than your personal best. What integer represents your c
stealth61 [152]

To solve this problem you must apply the proccedure shown below:

1- The problem says that you are swimming each 25 yard length 3 seconds faster than your personal best and you have to calculate the change in time (which you can call x) of your personal best after 200 yards.

2- To calculate this, you must multiply 200 yards by 3 seconds and divide by 25 yards, as following:

x=\frac{(200yd)(3s)}{25 yd}=24s

Therefore, the answer is: 24 seconds.

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3 years ago
-16x^2 +64x + 60<br> What is the max height
Elanso [62]

Answer:  

x=5/2,3/2

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Step-by-step explanation:

3 0
3 years ago
The height in feet above the water of a diver can be modeled by ℎ() = −16*2 − 16 + 192, where t is the time in seconds after the
Maurinko [17]

h(t) is the height of the diver in feet above the water

Now it asks about the time at which diver reaches the water

When diver reaches the water , the height of diver from water should be zero

So we plug h(t) =0

So

-16t^2 -16 t +192 =0

divide whole equation by -16

t^2 +t -12 =0

we can now factor the quadratic equation

So we get

(t+4)(t-3) =0

plug each factor equal to zero and solve for t

t+4 =0 and t-3 =0

So t=-4 and t=3

Now time cannot be negative , So t=3

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It takes 3 seconds for the diver to reach the water

3 0
3 years ago
There are 43 pine trees currently in the park. Park workers will plant more pine trees
Luden [163]

Answer:

20 pine trees

Step-by-step explanation:

No of pine trees today = 63

No of pine trees there = 43

So no of pine trees planted today= 63-43= 20

8 0
2 years ago
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