3 years ago

Which value of a makes the equation true?

Mathematics

1 answer:

KiRa [710]3 years ago

4 0

Answer:

a = -2

Step-by-step explanation:

3(a + 1.5) = -1.5

3a + 4.5 (-4.5) = -1.5 (-4.5)

3a = -6

a = -2

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Evaluate each function at the given value using the remainder theorem.

Afina-wow [57]

Answer:

Step-by-step explanation:

$f(x) = x^4 +5x^3 -18x +1\\\\f(-4) = (-4)^4 +5(-4)^3 -18(-4) +1\\\\~~~~~~~~~=256+5(-64)+72+1\\\\~~~~~~~~~=329-320\\\\~~~~~~~~~=9$

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2 years ago

156

Sveta_85 [38]

Answer:

Third option: 80 people.

Step-by-step explanation:

Let be "x" the number of people that were surveyed.

You know that 48 people chose winter as their favorite season and these amount of people are the 60% of those questioned.

Knowing this, you can calculate the number of people that were surveyed with this procedure:

$x=\frac{(48\ people)(100\%)}{60\%}\\\\x=(48\ people)(\frac{5}{3})\\\\x=80\ people$

Therefore, 80 people were surveyed. This matches with the third option.

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3 years ago

What is the solution to 8•g=-32?

Anni [7]

8 x -4 = -32... good luck

5 0

4 years ago

Read 2 more answers

Multiple the polynomial (4x^2 + 4x + 6)(7x + 5)

Mazyrski [523]

Answer:

28 x³ + 48 x² + 62 x + 30

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given that the polynomial equation

(4 x² + 4x +6)(7x+5)

Multiply

⇒ 4 x² ( 7 x+5) + 4 x ( 7x+5) + 6 (7x+5)

⇒ 28 x³ + 20 x² + 28 x² + 20 x + 42 x + 30

⇒ 28 x³ + 48 x² + 62 x + 30

8 0

3 years ago

Anthony deposited $500 into his bank account. A couple of days later he withdrew $40. The next day he

shtirl [24]

Answer:

$390

Step-by-step explanation:

First he has $500-$40=$460

So now he has $460+$30=$490

He has $490-$100=$390

7 0

3 years ago