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Nina [5.8K]
2 years ago
11

Which equation represents a direct variation?

Mathematics
1 answer:
german2 years ago
4 0

Answer:

A.

Step-by-step explanation:

i'm 99% sure

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Is x = -4 a valid solution this linear equation?
HACTEHA [7]

Answer:

Yes, -4 is valid.

Step-by-step explanation:

Lets Find out.

So, using substitution:

2(-4)+9(-4-1)=8(2(-4)+2)-5\\-8-45=8(-6)-5\\-53=-48-5\\-53=-53

Yes, -4 is a valid solution.

Hope This Helps!

Stay Safe!

4 0
3 years ago
Read 2 more answers
Which value must be added to the expression x2 + x to make it a perfect-square trinomial? One-fourth One-half 1 4
SVEN [57.7K]

Answer:

\frac{1}{4}

Step-by-step explanation:

Given

x² + x

To complete the square

add ( half the coefficient of the x- term )² to x² + x

x² + 2(\frac{1}{2} )x + (\frac{1}{2} )² = x² + x + \frac{1}{4}

= (x + \frac{1}{2} )² ← perfect square

3 0
3 years ago
Read 2 more answers
Can someone help for 30pts? plzzzzzzzzzzzzzzzzzzz
mash [69]
It is the last option (2x+4)(4x^2-8x+16). It is the only one that gives a constant term of positive 64 (16*4).
6 0
3 years ago
Rd
taurus [48]

Answer:

can you please write it differently cuz its kinda confusing

4 0
3 years ago
What is the contrapositive of the following conditional?
rjkz [21]

Answer: B. If a student is not over 6 feet tall, then the student does not play basketball.


Step-by-step explanation:

The contrapositive of a conditional statement of the form "If p then q" is "If not q then not p. The contrapositive is logically equivalent to conditional statement.

Here the given conditional statement is "If a student plays basketball, then the student is over 6 feet tall."

Thus the contrapositive of the conditional statement will be "If a student is not over 6 feet tall, then the student does not play basketbal"

8 0
3 years ago
Read 2 more answers
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