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Arisa [49]
3 years ago
11

HELPPPPPP ASAP!! IMMA DIE CUZ MY PARENTS ARE STRICT

Mathematics
2 answers:
kykrilka [37]3 years ago
4 0

Answer:

1. He ignored 4 on the first line

2. 9 - 2x

Step-by-step explanation:

4 - 2(x + 5)

4 - 2x + 5

9 - 2x

MrMuchimi3 years ago
4 0

Answer:

Kwame's work is wrong because they subtracted first instead of multiplying.

2x + 6

Step-by-step explanation:

PEMDAS!!

4 - 2(x+5)

4 - 2x + 10

2x + 6

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Fill in the table with the output (f(x)) values for each given input (x) value based on the given function. Х f(x)​
Otrada [13]

Answer:

f(0) = -6

f(1) = -4

f(2) = 2

f(3) = 12

Step-by-step explanation:

f(x)=2x^{2} -6\\f(0)=2(0)^{2}-6=0-6=-6\\ f(1)=2(1)^{2}-6=2-6=-4\\ f(2)=2(2)^{2}-6=2(4)-6=8-6=2 \\f(3)=2(3)^{2}-6=2(9)-6 =18-6=12

8 0
4 years ago
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Solve the equation: Sin2x - Sinx = 0
Viktor [21]
We know that sin2x=2sinxcosx 
(search the net for proof if you wish) 

So the original equation becomes

2sinxcosx-sinx=0
The two terms both have sinx that can be taken out to get: 

sinx(2cosx-1)=0 
This is true if sinx=0 or 2cosx-1=0 , rewritten: cosx=1/2

sinx=0 than x=2kπ
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where k is an integer

5 0
4 years ago
Use distributive property to create an equivalent expression to 7x+56
Alexeev081 [22]
The answer should be 7(x+8)
6 0
4 years ago
What is the slope of a line that is parallel to the x-axis? 0 1 undefined
Troyanec [42]
Its 0 because the slope would be one if it was a positive line and itd go up and across one unitl and it is undefined if it is parallel to the y axis
3 0
3 years ago
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John puts the base of a 13 foot ladder 4 feet from the wall of his house. How far up the wall does the ladder reach? Round your
antiseptic1488 [7]

Answer:

12.04 feet

Step-by-step explanation:

Applying Pythagoras theorem,

a^{2}= b^{2} + c^{2}

13^{2} =4^{2} + c^{2}

c^{2} = 145

c=\sqrt{145}

c=12.04

7 0
3 years ago
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