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pychu [463]
2 years ago
13

0.42 - 4) = 0.24 + 7)

Mathematics
1 answer:
Ronch [10]2 years ago
8 0

Answer:

im sorry if not but i think its 7.24

Step-by-step explanation:

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Which of the following reveals the minimum value for the equation 2x^2 − 4x − 2 = 0?
12345 [234]

Answer:

2(x-1)^{2}=4

Step-by-step explanation:

<u><em>The options of the question are</em></u>

2(x − 1)2 = 4

2(x − 1)2 = −4

2(x − 2)2 = 4

2(x − 2)2 = −4

we have

2x^{2} -4x-2=0

This is a vertical parabola open upward

The vertex represent the minimum value

The quadratic equation in vertex form is

y=a(x-h)^2+k

where

a is a coefficient

(h,k) is the vertex

so

Convert the quadratic equation in vertex form

Factor 2 leading coefficient

2(x^{2} -2x)-2=0

Complete the squares

2(x^{2} -2x+1)-2-2=0

2(x^{2} -2x+1)-4=0

Rewrite as perfect squares

2(x-1)^{2}-4=0

The vertex is the point (1,-4)

Move the constant to the right side

2(x-1)^{2}=4

3 0
2 years ago
975,462 were downloaded in one day. Round this number to the nearest hundred thousand to estimate how many songs were downloaded
rewona [7]

Answer:

975,462.00000

Step-by-step explanation:

975,462 rounded to hundred thousand

7 0
3 years ago
A bee flys 4.5 meters in 9 seconds what is the unit rate in meters per second
vredina [299]

4.5 meters = in 9 seconds

1 meter = 9/4.5 = 2seconds

so, a bee flys 1 meter in 2 seconds.

7 0
3 years ago
Read 2 more answers
A student simplifies (6b + 4r) – (2b + r) and says that the result is 4b + 5r. Explain the error and describe the correct steps
Nezavi [6.7K]
Actually, its not 4b + 5r  its 4b +3r because look 

step 1. 6b + 4r - (2b + r)
step 2. 6b + 4r - 2b - r
step 3. (6b - 26) + (4r - r)
step 4. 4b + 3r  
So the answer is actually 4b + 3r 

hope i helped if did plz mark as <span>Brainliest</span>
7 0
2 years ago
Read 2 more answers
What is the least common multiple of four and nine
Marat540 [252]
The least common multiple should be 36 because it is the smallest number 4 and 9 go into.
8 0
3 years ago
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