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2 years ago

Please say the balance

Mathematics

2 answers:

Misha Larkins [42]2 years ago

3 0

Answer:

750.64

Step-by-step explanation:

Alina [70]2 years ago

3 0

Answer:

balance: $1203.86

Step-by-step explanation:

$543.22

+$675.00

$1218.22

-$312.87

$905.35

- 150.00

$755.35

+$675.00

$1430.25

-$102.33

$1328.02

-$34.16

$1203.86

if u need more help just reply to this post :))

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Find the quadratic function that fits the following data. which one function fits.

Oksana_A [137]

Answer:

Step-by-step explanation:

The general rule for the quadratic function is

$y=ax^2+bx+c$

Use the data from the table:

$y(50)=130\Rightarrow 130=a\cdot 50^2+b\cdot 50+c\\ \\y(70)=130\Rightarrow 130=a\cdot 70^2+b\cdot 70+c\\ \\y(90)=200\Rightarrow 200=a\cdot 90^2+b\cdot 90+c$

We get the system of three equations:

$\left\{\begin{array}{l}2500a+50b+c=130\\ \\4900a+70b+c=130\\ \\8100a+90b+c=200\end{array}\right.$

Subtract these equations:

$\left\{\begin{array}{l}4900a+70b+c-2500a-50b-c=130-130\\ \\8100a+90b+c-2500a-50b-c=200-130\end{array}\right.\Rightarrow \left\{\begin{array}{l}2400a+20b=0\\ \\5600a+40b=70\end{array}\right.$

From the first equation

$b=-120a$

Substitute it into the second equation:

$5600a+40\cdot (-120a)=70\Rightarrow 800a=70,\\ \\ a=\dfrac{7}{80},\\ \\ b=-120\cdot \dfrac{7}{80}=-\dfrac{21}{2}=-10.5$

So,

$2500\cdot \dfrac{7}{80}+50\cdot (-10.5)+c=130\Rightarrow 218.75-525+c=130\\ \\c=130-218.75+525=436.25$

The quadratic function is

$y=\dfrac{7}{80}x^2-10.5x+436.25\\ \\y=0.0875x^2-10.5x+436.25$

4 0

3 years ago

How to solve long division by using long division 711.9 divided by 8.4

harkovskaia [24]

Multiply both 711.9 and 8.4 by 10 which will remove the decimal point.
and make the calculation much more easier
the required answer would be 84.75

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3 years ago

Sophie bikes at a speed of s miles per hour. Her friend Rana is slower, her biking speed is only r miles per hour.

Rzqust [24]

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8 0

2 years ago

What is the volume, in cubic ft, of a rectangular prism with a height of 13ft, a width of 15ft, and a length of 9ft?

Norma-Jean [14]

Answer:

1755 ft³

Step-by-step explanation:

Volume of a rectangular prism = base area x height

Base area = length x width

15 ft x 9 ft = 135 ft²

Volume = 135 ft² x 13 ft = 1755 ft³

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3 years ago

Jaime has 6 quarters and some dimes in his pocket . The total value of the coins in 4.50. How many dimes does he have in his poc

Alexxandr [17]

Hi there! :)

Answer:

Jaime has 30 dimes in his pocket.

Step-by-step explanation:

First off, you need to know that:

A quarter is equal to = $0.25

A dime is equal to = $0.10

Jaime has 6 quarters, which means that he has 6 times $0.25:

6 × 0.25 = $1.50

Jaime has a total of $4.50 → Subtract the amout of money represented by the quarters and you'll be left with the amout of money represented by the dimes:

4.50 - 1.50 = $3

Jaime has $3 worth of dimes in his pocket. In order to know how many dimes $3 represents, you'll need to divide "3" by 0.10, which is what 1 dime is worth:

3 ÷ 0.10 = 30 → YOUR ANSWER

There you go! I really hope this helped, if there's anything just let me know! :)

6 0

3 years ago