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Dvinal [7]
3 years ago
7

Which of the following is a reflection of ( 2,4 ) across the x-axis?

Mathematics
1 answer:
fiasKO [112]3 years ago
7 0

Answer:

(2,-4)

Step-by-step explanation:

(2,4) is located in Quadrent I (+,+), if you reflect over the x-axis, it would be in Quadrent IV (+,-).

if you dont understand I suggest you draw a coordinate plane on a graphing notebook.

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Which choice is equivalent to the expression below √-12
kondaur [170]

Answer:

E

Step-by-step explanation:

using the rule of radicals

\sqrt{a} × \sqrt{b} ⇔ \sqrt{ab}, hence

\sqrt{-12}

= \sqrt{4(3)(-1)} = \sqrt{4} × \sqrt{3} × \sqrt{-1} [\sqrt{-1} = i]

= 2i\sqrt{3} → E


7 0
3 years ago
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What is the value of x?<br><br> Please help! Thanks!
leonid [27]

Answer:

x=75

Step-by-step explanation:

We can use proportions to solve this problem.  Put the side of the small triangle over the side of the large triangle.

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------ = ----------

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42           50

------ = ----------

105          50+x

Using cross products

42(50+x) = 50*(105)

2100+42x = 5250

Subtract 2100 from each side

2100-2100+42x = 5250-2100

42x =3150

Divide by 42

42x/42 = 3150/42

x = 75


8 0
4 years ago
A calculator screen displays 9.837E8. Write this number in standard form.​
natta225 [31]

Answer:

983,700,000

Step-by-step explanation:

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3 years ago
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Describe the relationship between the number of places a decimal point is moved to the left and the change in the value of the n
dimaraw [331]
For every decimal place you move a decimal through a number you can think of it as multiplying or dividing by ten. 

take for example 1000.0 
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but, if you make the number bigger, say 10000. then you have multiplyed by ten. 
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3 years ago
Im giving brainliest
Alla [95]

Answer:

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