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wel
3 years ago
13

The product of 4 and a number x is 14

Mathematics
1 answer:
Sever21 [200]3 years ago
3 0

Answer:

x=3.5

Why?

14/4=3.5

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Write an equivalent expression for each of the following. Express your answers in the form a + bi or a - bi
Lana71 [14]

Answer:

44 +14i

Step-by-step explanation:

(5 + i)(9 + i)

FOIL

first 5*9 = 45

inner: 9i

outer :5i

last: i*i = i^2 = -1

Add togheter

45 + 9i+5i -1

Combine like terms

44 +14i

6 0
3 years ago
Alyssa was given a gift card for a coffee shop each morning Alyssa uses the gift card to buy one cup of coffee let a represent t
raketka [301]

Answer:20.00

Step-by-step explanation: next time include the table but i managed to find it anyway

5 0
1 year ago
Write a polynomial function of least degree with the given zero. -1+ √ 2, √ 3
kirill115 [55]

Answer:

f(x) = x^{4} + 2x³ - 4x² - 6x + 3

Step-by-step explanation:

Note that radical zeros occur in conjugate pairs, thus

- 1 + \sqrt{2} is a zero then - 1 - \sqrt{2} is also a zero

\sqrt{3} is a zero then - \sqrt{3} is also a zero

Thus the corresponding factors are

(x - (- 1 + \sqrt{2}) ), (x - (- 1 - \sqrt{2}) ), (x - \sqrt{3}), (x - (- \sqrt{3})), that is

(x + 1 - \sqrt{2}), (x + 1 + \sqrt{2}), (x - \sqrt{3}), (x + \sqrt{3})

The polynomial is then the product of the roots

f(x) = (x + 1 - \sqrt{2})(x + 1 + \sqrt{2})(x - \sqrt{3})(x + \sqrt{3})

     = ((x + 1)² - (\sqrt{2})²)((x² - (\sqrt{3})²)

     = (x² + 2x + 1 - 2)(x² - 3)

     = (x² + 2x - 1)(x² - 3) ← distribute

     = x^{4} - 3x² + 2x³ - 6x - x² + 3

     = x^{4} + 2x³ - 4x² - 6x + 3

6 0
3 years ago
Solve for x.<br> 6x-2/4 = - 2<br><br><br> X=__
Ghella [55]

Hi,

The answer you are looking for is x= -3.

Have a great day!!

6 0
3 years ago
Read 2 more answers
What is the value of 3ab+5b-6 when a=1 and b = 3
Jet001 [13]
The value of 3ab+5b-5 is 18

8 0
3 years ago
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