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2 years ago

Expand the following expression: (2x-1)(x+4)

Mathematics

1 answer:

sesenic [268]2 years ago

8 0

Answer:

2x² +7x - 4

Step-by-step explanation:

(2x-1)(x+4)

2x² + 8x - x - 4

simplify:

2x² +7x - 4

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Rectangle LMNP is transformed to rectangle L'M'N'P' as shown on the graph below.

olganol [36]

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Answer:

Step-by-step explanation:

Each image point is twice as far from the origin as its preimage point. Each image segment is twice as long as its preimage segment. (LM=2, L'M'=4, for example)

The scale factor is 2.

3 0

3 years ago

Is the answer to -8.8-3.4 positive or negative? I know. It is 12.2 but I don't know if it's -12.2 or +12.2

Marat540 [252]

It is negative.

When you subtract a negative a positive number from a negative number, the result is positive. The equation can be rewritten as -8.8-(+3.4).

6 0

2 years ago

Please I really need help!! Also show the work please

Natasha_Volkova [10]

Answer:

3x +5+2x+44+110+123+136=360

5x+418=360

c. l. t

5x=58

therefore X=11.5

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2 years ago

If the Laffite family deposits $8500 in savings account at 6.75% interest, compounded continuously, how much will be in the acco

vitfil [10]

Answer:

Option b

Step-by-step explanation:

We have a compound interest problem. With an annual interest rate of 0.675 and an initial payment of 8500, with t = 25 years

Then you must use the annual compound interest formula, which is represented by a growing exponential function:

$y = e ^{ht}$

Where:

h is the interest rate of 0.675

y is the money in the savings account as a function of time

Then substitute the values in the formula and we have:

$y = e ^{0.675(25)}$

$y = 45,950.57$

4 0

2 years ago

Allisa [31]

Answer:

Step 1

Step-by-step explanation:

Carly divided 7a by a when she should have divided 7a by 7

5 0

2 years ago

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