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hammer [34]
2 years ago
13

An equation to find the length in centimeters if the width is 10 cm

Mathematics
1 answer:
Setler79 [48]2 years ago
4 0
10cm X 100 = 1000 is the answer mate
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Solving quadratic equations with complex solutions x2 + 4x + 8 = 0.
Daniel [21]

Answer:

\large\boxed{x=-2\pm2i}

Step-by-step explanation:

x^2+4x+8=0\qquad\text{subtract 8 from both sides}\\\\x^2+4x+8-8=0-8\\\\x^2+2(x)(2)=-8\qquad\text{add}\ 2^2\ \text{to both sides}\\\\x^2+2(x)(2)+2^2=-8+2^2\qquad\text{use}\ (a+b)^2=a^2+2ab+b^2\\\\(x+2)^2=-8+4\\\\(x+2)^2=-4\iff x+2=\pm\sqrt{-4}\\\\x+2=\pm\sqrt{(4)(-1)}\qquad\text{use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\\\x+2=\pm\sqrt4\cdot\sqrt{-1}\qquad\text{use}\ \sqrt{-1}=i\\\\x+2=\pm2\cdot i\qquad\text{subtract 2 from both sides}\\\\x=-2\pm2i

4 0
2 years ago
Alexa opens a savings account with a starting balance of $10,000. She will not make any additional deposits or withdrawals. The
Mice21 [21]

Answer:

$12,000

Step-by-step explanation:

Use the simple interest formula: P = A(1 + rt)

P = final balance (?)

A = starting balance (10,000)

r = interest rate (0.05)

t = years (4)

P = 10,000(1 + 0.05 · 4)

P = 10,000(1 + 0.2)

P = 10,000(1.2)

P = 12,000

5 0
2 years ago
It’s pre algebra finding y axis help with slope
Assoli18 [71]
(0,-2) , good luck >>>>>>>>>
6 0
2 years ago
Pls help due soon. ​
alexgriva [62]

Answer:

74

pls give brainliest

3 0
3 years ago
Read 2 more answers
Each side of a square is increasing at a rate of 6 cm/s. at what rate is the area of the square increasing when the area of the
katrin [286]
A = s^2
A' = 2s*s'

When the area is 36 cm^2, the side (s) is 6 cm. The area is increasing at the rate
A' = 2(6 cm)*(6 cm/s) = 72 cm^2/s
8 0
3 years ago
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