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Ivahew [28]
3 years ago
15

Which graph represents 4x + 7y < -21

Mathematics
1 answer:
allsm [11]3 years ago
3 0

Answer:

C

Step-by-step explanation:

Since the sign is not \leq, and it is <, then you'd choose the option with the dotted line showing it isn't inclusive.

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You spin the spinner below once. What is the probability that the arrow will land on 3
Leni [432]

Answer:

how many numbers are there and if there is more of the same number then that will be ur probability

Step-by-step explanation:

8 0
3 years ago
Find all the roots of the equation x4 - 2x3 + 14x2 - 18x + 45 = 0 given that 1 + 2i is one of its roots.
patriot [66]
Asked and answered elsewhere.
brainly.com/question/10192511


Knowing that 1+2i is a root, you also know that 1-2i is a root, so one quadratic factor is
   (x -1)² -(2i)² = x^2 -2x +5

Long division of the given polynomial by this quadratic gives a quotient of 
  x² +9
which has roots ±3i.

Then all the roots are {-3i, 3i, 1-2i, 1+2i}.
7 0
3 years ago
Given the equation:
Alisiya [41]

Answer:

x = 1 and x = \frac{-4}{5}

Step-by-step explanation:

In this equation, a=5, b=-1, c=-4.

Plug these into the quadratic formula:

x = \frac{1+\sqrt{-1^{2}-(-4)(5)(-4) } }{2(5)}   and x = \frac{1-\sqrt{-1^{2}-(-4)(5)(-4) } }{2(5)}

Now, simplify the equations:

x = \frac{1+\sqrt{81} }{10} = \frac{1+9}{10} = \frac{10}{10} = 1

and

x = \frac{1-\sqrt{81} }{10} = \frac{1-9}{10} = \frac{-8}{10} = \frac{-4}{5}

5 0
3 years ago
simplify 1 76/100 if you can thank you and I love you also I will thank you and refer all my friends to you look up how to basic
Galina-37 [17]
The answer is 1 19/25.

8 0
3 years ago
A box of cereal states that there are 93 calories in a three fourths
cupoosta [38]

93/3 = 31, 31 x 4= 124

Calories per cup is 124

There are 372 calories in three cups

7 0
3 years ago
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