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4 years ago

HEEELLLLLPPPPPPPPPPPP!!!!!!!

Mathematics

1 answer:

Mademuasel [1]4 years ago

4 0

Answer:

2x³ + 11x² + 8x - 16

Step-by-step explanation:

Multiply:

(x + 4) (2x² +3x - 4)

2x³ + 3x² - 4x + 8x² + 12x - 16

Combine like terms:

2x³ + 11x² + 8x - 16

You might be interested in

10(1 + 4a) - 7a = -6a + 5(1 + 8a)

yulyashka [42]

10(1 + 4a) - 7a = -6a + 5(1 + 8a)

10 + 40a - 7a = -6a + 5 + 40a
-40. -40

10 - 7a = -6a + 5
-7a + 6a = 5 - 10
-a = -5
5 = a

7 0

3 years ago

$1.08 as a decimal and fraction

Ugo [173]

Answer:

as a fraction?

27/25

1 2/25

Step-by-step explanation:

5 0

3 years ago

Alex paid $20,448 for a new car. He will make equal payments each month or 4 years. What will be Alex's monthly car payment

fgiga [73]

Answer:

$426

Step-by-step explanation:

According to the question,

New car cost = $20,448

Time to repay = 4 years or 48 months

So, we can calculate the monthly car payment by using following formula,

Monthly car payment = New car cost ÷ Time to repay

By putting the value, we get

Monthly car payment = $20,448 ÷ 48

= $426

Hence, Alex monthly car payment is $426.

5 0

3 years ago

On Thursday, rrr centimeters of rain fell on Deborah's garden. On Saturday, 15\%15%15, percent more rain fell on the garden.

xenn [34]

Answer:

Step-by-step explanation:

Complete question

On Thursday, r centimeters of rain fell on Deborah's garden. On Saturday, 15% more rain fell on the garden.

The expression r+0.15r describes the number of centimeters of rain Deborah's garden got on Saturday. We can also use the expression 1.15r to represent the same quantity.

Match each amount in the situation with the expression that represents it.

Since we have given that

Let amount of rainfall on Deborah's garden on Thursday be 'r'.

According to question, 15% more rainfall on the garden on Saturday.

So, Amount of rainfall on Saturday would be

$r+\dfrac{15}{100}r\\\\=r+0.15r\\\\=1.15r$

Hence, Deborah got 1.15r amount of rainfall on Saturday.

4 0

4 years ago

Read 2 more answers

What is the slope of the line: 7x + 4y=10

lidiya [134]

Change the equation to slope intercept form: y= mx + b. m is slope and b is the y-intercept.

7x+4y=10
subtract 7x
4y=10-7x
divide by 4
y=(10-7x)/4
y=10/4-7x/4
simplify
y=5/2-7x/4
swap positions for correct form
y= -7/4x + 5/2

slope= -7/4

7 0

3 years ago