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4 years ago

Solve the equation 4c2 + 7c – 5 = 0 using the quadratic formfoula

Mathematics

1 answer:

irakobra [83]4 years ago

3 0

Let's solve your equation step-by-step.

4c2+7c−5=0

Step 1: Use quadratic formula with a=4, b=7, c=-5.

−b±√b2−4ac

−(7)±√(7)2−4(4)(−5)

2(4)

−7±√129

−7

√129 or c=

−7

−1

√129

Answer:

−7

√129 or c=

−7

−1

√129Let's solve your equation step-by-step.

4c2+7c−5=0

Step 1: Use quadratic formula with a=4, b=7, c=-5.

−b±√b2−4ac

−(7)±√(7)2−4(4)(−5)

2(4)

−7±√129

−7

√129 or c=

−7

−1

√129

Answer:

−7

√129 or c=

−7

−1

√129Let's solve your equation step-by-step.

4c2+7c−5=0

Step 1: Use quadratic formula with a=4, b=7, c=-5.

−b±√b2−4ac

−(7)±√(7)2−4(4)(−5)

2(4)

−7±√129

−7

√129 or c=

−7

−1

√129

Answer:

−7

√129 or c=

−7

−1

√129

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If sales tax is 6% and you buy a shirt for $25 how much do you owe?

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Answer:

26.50

Step-by-step explanation:

First we need to calculate the sales tax

25 * 6%

Changing to decimal from

25 * .06

1.50

Then we add the tax to the cost of the shirt

25+1.50

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We owe 26.50

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Danielle constructs a scale model of a building with a rectangular base. Her model is 2 inches in length and 1 inch in width. Th

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3 years ago

Simplify (x²-1)∧-2/3

SVEN [57.7K]

(x² - 1)^-2/3
∛(x² - 1)-²
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4 years ago

Translated up 3 units and left 2 units

seraphim [82]

What are we trying to answer here lol

6 0

3 years ago

Print Version

san4es73 [151]

Answer:

$9450

Step-by-step explanation:

We will use compound interest formula:

$F=P(1+r)^t$

Where

F is future amount [what we want to figure out]

P is present amount [9000]

r is rate of interest [since we want for 6 months, the annual interest divided by 2 is r. So r = 10/2 = 5% or 0.05]

t is the time [ the time period is for 6 months so t = 1 since we already converted the interest rate to 6 month chunk]

Putting in formula, we get:

$F=P(1+r)^t\\F=9000(1+0.05)^1\\F=9000(1.05)\\F=9450$

6 0

4 years ago