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masya89 [10]
3 years ago
15

HELP PLEASE :)

Mathematics
2 answers:
Artist 52 [7]3 years ago
5 0
Let b=boxes   SO 25=b(2.50)+3.98  So she would be able to buy 8.4 total boxes.
Dvinal [7]3 years ago
5 0
Let's b is the number of boxes of cereal Lindsey can buy
    (3.98 + 2.50)b = 25
            6.48 b      = 25
                   b        = 3.85
so Lindsey can buy 3.85 boxes of cereal
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Solve for x... I dont know what to do with the square root
Artemon [7]
√(x²+13)=2+x
[√(x²+13)]² = (2+x)²
x²+13=4+4x+x²
x²-x²-4x=4-13
-4x=-9
x=-9/-4
x=9/4

To check:
√(x²+13)=√(81/16  +13)=√[(81+208)/16]=√(289/16)=17/4.
2+x=2 + 9/4=(8+9)/4=17/4

8 0
3 years ago
Say you buy an house as an investment for 250000$ (assume that you did not need a mortgage). You estimate that the house will in
bazaltina [42]

Answer:

3.3 years  

Step-by-step explanation:

Let the price of the house  when it is being sold be =  x

The Annual return received from the fund after a year that house is being sold is : A -  P

where ;

P = current market price

A = price after one year

A is given by the formula:

A = P (1+ \frac{r}{n} )^{{n}{t} }

where ; P = x

r = 8.5% = 0.085

n = 12

t = 1

A= x(1+\frac{0.085}{2})^{12*1}

A= x(1.00708333)^{12}

A = 1.08839 x

The annual return is A - P = 1.08839 x - x

= 0.08839x

However, the house should be sold when this return is equivalent to the annual increase in value of the house

∴ 0.08839x = 31250

x = \frac{31250}{0.08839}  \\ \\ x = 353546.78

Thus , the current price (x) = $353546.78

Profit till that time = Current price - Initial Price

= (353546.78- 250000)$

= $103546.78

The time taken for this much profit to accumulate = \frac{Total \ profit}{Annual \ profit}

= \frac{103546.78}{31250}

= 3.3135

≅ 3.3 years                 ( to one decimal place)

5 0
4 years ago
Evaluate<br> 6² + (3.4) – 24
adell [148]

Answer:

=15.4

Step-by-step explanation:

6^2+(3.4)-24 = 36+3.4−24

36+3.4−24

39.4−24

=15.4

5 0
3 years ago
A line has a slope of 8 and includes the points (1, z) and (2,8). What is the value of z?
NISA [10]

The value of z is zero

Step-by-step explanation:

The slope is the steepness of the line.

The formula for slope is given by:

m=\frac{y_2-y_1}{x_2-x_1}\\Here\\(x_1,y_1)\ are\ the\ coordinates\ of\ first\ point\ on\ line\\(x_2,y_2)\ are\ the\ coordinates\ of\ second\ point\ on\ line

Here

(x1,y1) = (1,z)

(x2,y2) = (2,8)

So,

m=\frac{y_2-y_1}{x_2-x_1}\\8 = \frac{8-z}{2-1}\\8=\frac{8-z}{1}\\8-8 = -z\\z = 0

The value of z is zero

Keywords: slope, Line

Learn more about slope at:

  • brainly.com/question/10879401
  • brainly.com/question/10940255

#LearnwithBrainly

6 0
3 years ago
Find x. 13x+1 + (7x+19)
Y_Kistochka [10]

Answer:

<u><em>Answer is below</em></u>

Step-by-step explanation:

<u><em>13x+1+7x+19</em></u>

<u><em>Combine Like Terms:</em></u>

<u><em>=13x+1+7x+19</em></u>

<u><em>=(13x+7x)+(1+19)</em></u>

<u><em>=20x+20</em></u>

6 0
3 years ago
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