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enyata [817]
3 years ago
8

Jane took out $135 from her checking account. If Jane now has a balance of $650 in her account, how much did Jane have in the ac

count before she took out any money?
Mathematics
2 answers:
seraphim [82]3 years ago
5 0
$785 you just have to add $650 plus $135

Kay [80]3 years ago
3 0
She had $785. You just add them together. I hope this helps
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Solve the proportion.<br> 10<br> 35<br> 10 + x<br> 56<br> x = [?]
Vadim26 [7]

Answer:

x = 6

Step-by-step explanation:

cross-multiply:

10(56) = 35(10+x)

560 = 350+35x

210 = 35x

x = 6

5 0
3 years ago
What are the roots of 2x² – 5x + 2 = 0?
alina1380 [7]
The root is 10 because 2x5 is 10 so that’s ur answer
6 0
3 years ago
Arrange the summation expressions in increasing order of their values.
nalin [4]
We'll solve for each one of them:

\sum_{i=1}^{4}4(5)^{i-1} = (4(5)^{1-1}) + (4(5)^{2-1}) + (4(5)^{3-1}) + (4(5)^{4-1})
=4+20+100+500 = 624

\sum_{i=1}^{5}3(4)^{i-1} = (3(4)^{1-1}) + (3(4)^{2-1}) + (3(4)^{3-1}) + (3(4)^{4-1}) + (3(4)^{5-1})
=3+12+48+192+768=1023

\sum_{i=1}^{2}5(6)^{i-1} = (5(6)^{1-1}) + (5(6)^{2-1})
=5+30=35

\sum_{i=1}^{4}5^{i-1} = (5^{1-1})+(5^{2-1})+(5^{3-1})+(5^{4-1})
=1 + 5+ 25+125 = 156

So, our totals are: 624, 1023, 35, and 156. So clearly, 1023 > 624 > 156 > 35. W can write it as (your answer):

\sum_{i=1}^{2}5(6)^{i-1}

Hope this helps! If anything is confusing, you can always DM me.
3 0
3 years ago
Read 2 more answers
Use the quadratic formula to solve the equation. <br> x ^2 – 7 x –6 = 0<br> (Show work)
Vika [28.1K]

Given a quadratic equation

ax^2+bx+c=0

the quadratic formula states that the solutions are

x_{1,2}=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}

Plug your values to get

x_{1,2}=\dfrac{-(-7)\pm\sqrt{(-7)^2-4\cdot 1 \cdot (-6)}}{2\cdot 1}

Which evaluates to

\dfrac{-(-7)\pm\sqrt{(-7)^2-4\cdot 1 \cdot (-6)}}{2\cdot 1} = \dfrac{7\pm\sqrt{73}}{2}

So, the two solutions are

x_1 = \dfrac{7+\sqrt{73}}{2},\quad x_2 = \dfrac{7-\sqrt{73}}{2}

5 0
3 years ago
Find the area of a square
Phoenix [80]

Answer:

Step-by-step explanation:

area =l^2

=7^2

=49 km^2

3 0
3 years ago
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