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Katarina [22]
3 years ago
8

2x+4(7−x) HELP me plz :c

Mathematics
1 answer:
Phantasy [73]3 years ago
4 0

Step-by-step explanation:

2x + 4(7-x)

= 2x + 28 -4x

= 28 - 2x

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Graduation is 3 years away and you want to have $850 available for a trip. If your bank is offering a 3-year CD (certificate of
irina1246 [14]

Answer:

We need to put $801.88 amount in the bank.

Step-by-step explanation:

given that

t=3 yr

Need amount $850 after 3 yr so P= $850

Interest rate=2%

We know that for simple interest

P=A\left(1+\dfrac{rt}{100}\right)

Where r is the Interest rate,t is the time,A is the present amount and P is principle amount after t time.

Here given that  P= $850

So now putting the values

850=A\left(1+\dfrac{2\times 3}{100}\right)

So A=$801.88

We need to put $801.88 amount in the bank.

7 0
4 years ago
Divide x^5+4x+1 by x+1
koban [17]

Step-by-step explanation:

  1. factor the numerator and denominator and then cancel the common factors
  2. ans x⁴ +4 + 1/x
7 0
3 years ago
2w-1 divided by 5+w+2=2w
FromTheMoon [43]

Answer:

(2w-1)/5+w+2=2w

We simplify the equation to the form, which is simple to understand  

(2w-1)/5+w+2=2w

Reorder the terms in parentheses

( + 0.4w-0.2)+w+2=2w

Remove unnecessary parentheses

+ 0.4w-0.2+w+2=2w

We move all terms containing w to the left and all other terms to the right.  

+ 0.4w+1w-2w=0.2-2

We simplify left and right side of the equation.  

-0.6w=-1.8

We divide both sides of the equation by -0.6 to get w.  

w=3

Step-by-step explanation:

6 0
4 years ago
Describe how you know that (8+9)+3 is equivalent to 8+(9+3). What is the benefit to using this property
NISA [10]

Answer:

Associative property of addition

Step-by-step explanation:

The associative property of addition is as follows :

a+(b+c) = (a+b)+c

We have,

a = 8, b = 9 and c = 3

So,

Using above property,

(8+9)+3 = 8+(9+3)

20 = 20

Hence, this is the required solution.

7 0
3 years ago
Janine is analyzing spending habits of students in her high school. She finds a mean monthly discretionary expense of $70 spent
aliina [53]

Answer:

Variance = 25

Step-by-step explanation:

<em>Standard deviation is the under root of variance.</em>

<em>Variance is the square of standard deviation.</em>

<u>Data:</u>

Mean = 70

Variance = ?

Standard deviation = √variance = 5

Variance = 5²

Variance = 25.

Therefore, the variance is 25.

3 0
4 years ago
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