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2 years ago

11

Jumps has $55 in her savings account. This is $21 more than David. Write and solve an equation to find the amount David has in h

is savings account.

1 answer:

adelina 88 [10]2 years ago

7 0

$55 - $21=34 and to check answer do 34+21=55

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2 years ago

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The equation $ax^2+bx+c=0$ has it's solutions given by $x= \frac{-b \pm \sqrt{b^2-4ac}}{2a}$ . This is the quadratic formula.

Looking at your equation we see a=1; b=-3 and c=-6 so by the quadratic formula,
$x = \frac{-(-3) \pm \sqrt{(-3)^2-(4 \times 1 \times -6)}}{2 \times 1} = \frac{3 \pm \sqrt{9+24}}{2}$

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3 years ago

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Step-by-step explanation:

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3 years ago

Calculate S30 for the arithmetic sequence defined by {an}={3.1n-2}

timurjin [86]

Answer:

c) 1,381.5.

Step-by-step explanation:

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2nd term = 3.1*2 - 2 = 4.2

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2 years ago

What is the area of rectangle whose<br> height is 2.5 in and base is 12 in?

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Step-by-step explanation:

Area of a rectangle is base times height.

A = bh

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A = 30 in²

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3 years ago