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fomenos
2 years ago
8

Consider the equation 3(4 + x) = 7x - 4x - 6. How many solutions does the equation have?

Mathematics
1 answer:
Ket [755]2 years ago
7 0
Rearrange this so the equation equals to zero.

Substitute the corresponding values into this part of the quadratic formula: square root(b^2 - 4ac)

If the answer is equal to 0 then there is one real solution.

If it is >0 then there are 2 real solutions

If it is <0 there are 2 imaginary solutions
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Find the 77th term of the arithmetic sequence<br> -7, -2, 3, ...
sukhopar [10]

Answer:

373

Step-by-step explanation:

first you find the difference between the first two numbers so we do -7 minus -2=-5 then plug it in -7+5=-2 now plug in 5 for the next two numbers -2+5=3 so now we know the rule is +5 now we do 5*76=380 then we do -7+380=373

3 0
3 years ago
An item that originally cost $56.00 is on sale for 20% off. What is the sale price?
mixer [17]

Answer:

44.8

Step-by-step explanation:

this is the answer

3 0
3 years ago
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The value of y when x=2
Igoryamba

Answer:

Step-by-step explanation:

Here,  

y

∝

x

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k

x

where k is constant.

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1

=

k

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[put y =1,x=2]

⇒

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2

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×

4

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y

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7 0
3 years ago
Jenna calculated several numbers in her calculator. The result displayed -1.7E-4 on the calculator screen. Which equivalent numb
Alexeev081 [22]
I think it's 
-0.00017 and -1.7 x 10-4

i hope this helps :)
3 0
3 years ago
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Which expression below gives the average rate of change of the function g(x) = -x2 - 4x on the interval 6 ≤ x ≤ 8 ?
Paha777 [63]

Answer: -18

<u>Explanation:</u>

Average rate of change is slope: \frac{y_{2}-y_{1}}{x_{2}-x_{1}}.  Need to find the y-coordinates:

g(x) = -x² - 4x

g(6) = -(6)² - 4(6)

      = -36 - 24

      = -60

⇒ (6, -60)

g(8) = -(8)² - 4(8)

      = -64 - 32

      = -96

⇒ (8, -96)

m = \frac{-96 - (-60)}{8 - 6}

   = \frac{-36}{2}

   = -18

7 0
3 years ago
Read 2 more answers
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