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Karolina [17]
3 years ago
5

FIND THE DIFFERENCE

Mathematics
2 answers:
Rama09 [41]3 years ago
4 0
<span> (5x² + 2x + 11) - (7 + 4x - 2x²)
=</span><span>5x² + 2x + 11 - 7 - 4x +2x²
=</span>5x²+2x²<span><span><span> + 2x-4x +</span> 11-7</span>
=3x²-2x+4
</span><span>
B. 3x2 - 2x + 4</span>

Nadya [2.5K]3 years ago
3 0

Answer:

D.  7x2 - 2x + 4

Step-by-step explanation:

(5x2 + 2x + 11) - (7 + 4x - 2x2)

7x2-2x+4

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As a promotion, a clothing store draws the name of one of its customers each week. The prize is a coupon for the store. If the w
kompoz [17]

The given formula is f(x) = 20(1.2)^x

The formula is the starting amount multiplied by 1 + the percentage raised to the number of weeks.


A) the percent increase is 20% ( 1.2 in the formula is 1 +20% as a decimal)

B) the original amount is $20

C) for 2 weeks, replace x with 2 and solve:

20(1.2)^2

20(1.44) = $28.80

After 2 weeks the coupon is $28.80

D)  To solve for the number of weeks (x) set the equation equal to $100:

100 = 20(1.2)^x

Divide both sides by 20:

5 = 1.2^x

Take the natural logarithm of both sides:

ln(5) = ln(1.2^x)

Use the logarithm rule to remove the exponent:

ln(5) = x ln(1.2)

Divide both sides by ln(1.2)

x = ln(5) / ln(1.2)

Divide:

X = 8.83

At 8.83 weeks the coupon would be $100, so after 9 weeks the coupon would be greater than $100

The answer is 9 weeks.

4 0
3 years ago
What is the result when 8x^3+6x^2+15x+7 divides by 2x + 1
sveticcg [70]

Answer:

Step-by-step explanation:

3 0
3 years ago
Please help me with this question!!
choli [55]

Answer:

0.75

Step-by-step explanation:

there is 1000 grams in 1 kilogram so I divided 750 by 1000 to get 0.75.

6 0
3 years ago
Which equation is equivalent to 10+2(x−1)+7x=3x+1?
Eva8 [605]

Answer:

Answer is x = -7/6

Step-by-step explanation:

please look at the image

8 0
2 years ago
Please help. I need it. Bad.
Murljashka [212]

Answer:

Option a.

Step-by-step explanation:

In the given triangle angle A is a right angle so triangle ABC is a right angled triangle.

Opposite side of right angle is hypotenuse. So, CB is hypotenuse.

From figure it is clear that CA is shorter that segment BA.

All angles are congruent to itself. So angle C is congruent to itself.

We know that, if an altitude is drawn from the right angle vertex in a right angle triangle it divide the triangle in two right angle triangles, then given triangle is similar to both new triangles.

So, triangle ABC is similar to triangle DBA if segment AD is an altitude of triangle ABC.

Therefore, the correct option is a.

3 0
3 years ago
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