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mafiozo [28]
2 years ago
6

Find the zeros of f(x) = x + 7x + 9 by using the Quadratic Formula.​

Mathematics
1 answer:
REY [17]2 years ago
4 0

:))))))))))))))))))))))

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zavuch27 [327]
Answer is 84.86 cm^2
8 0
2 years ago
Is the expression 8 x 85 equivalent to (8 X 835? Explain.<br><br>pls help I'm dying lol<br>​
Varvara68 [4.7K]

8 \times 835 = 6680

6 0
2 years ago
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Angle B has a measure between 0° and 360° and is coterminal with a –865° angle. What is the measure of angle B?
zysi [14]

Answer:

  215°

Step-by-step explanation:

Add multiples of 360° until you get an angle in the desired range:

  ∠B = -865° + 3×360° = 215°

4 0
3 years ago
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Help find out what the x is please
miss Akunina [59]

Answer:

x=4

Step-by-step explanation:

First you want to add 8.8 to 7.2 and get 16 because you want to get x alone

Next divide divide 4x on both sides so 4x/4x cross out and left with just x. 16/4 =4

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Hope this helps!


6 0
3 years ago
Read 2 more answers
What is the value of (7 + 2i)(3 - i)?
Harrizon [31]
There are two ways to work this out: normal variables or using "imaginary" numbers.

Normal variables:
(7+2i)(3-i)\\(7*3)+[7*(-i)]+(3*2i)+[2i*(-i)]\\21-7i+6i-2i^{2}\\\\21-i-2i^{2}

Imaginary numbers:
Using the result from earlier:
21-i-2i^{2}
Now since i = \sqrt{-1}, then the expression becomes:
21-i-2i^{2}\\21-i-2(\sqrt{-1})^{2}\\21-i+(-2)(-1)\\21-i+2\\\\23-i
7 0
3 years ago
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