2 years ago

What is the value of "x" in this equation: x - 5 = 7 * 20 points x = 35 x = 12 x =

Mathematics

1 answer:

marin [14]2 years ago

6 0

Answer:

x = 12

Step-by-step explanation:

x = 7 + 5

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Use the quadratic formula to solve the equation <br> 25x^2-30x+25=0

Reika [66]

Answer: $x=\frac{3}{5}+i\frac{4}{5},\:x=\frac{3}{5}-i\frac{4}{5}$

Step-by-step explanation:

$25x^2-30x+25=0$

$x_{1,\:2}=\frac{-\left(-30\right)\pm \sqrt{\left(-30\right)^2-4\cdot \:25\cdot \:25}}{2\cdot \:25}$

$\sqrt{\left(-30\right)^2-4\cdot \:25\cdot \:25}$

$=\sqrt{30^2-4\cdot \:25\cdot \:25}$

$=\sqrt{30^2-2500}$

$=i\sqrt{2500-30^2}$

$=40i$

$x_{1,\:2}=\frac{-\left(-30\right)\pm \:40i}{2\cdot \:25}$

$x_1=\frac{-\left(-30\right)+40i}{2\cdot \:25},\:x_2=\frac{-\left(-30\right)-40i}{2\cdot \:25}$

$x=\frac{3}{5}+i\frac{4}{5},\:x=\frac{3}{5}-i\frac{4}{5}$

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2 years ago

A prefix kilo in the metric system means ___ units. A. 100 B 10 C.1,000 D.1,000,000

siniylev [52]

Kilo = 1,000
Hecto = 100
Deca = 10
Base (unit) = 1
Deci = 0.1
Centi = 0.01
Milli = 0.001

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3 years ago

Read 2 more answers

can someone help? I'm getting ready to slit someone's throat, I'm so irritated. I have 7 of these to do.

Brums [2.3K]

97.8ft^2 but if you round it to the nearest 10 it will be 100ft^2

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3 years ago

BRAINLIEST BRAINLIEST BRAINLIEST PLEASE ANDSER IT IS TIMED THANK YOU SO MUCCH

Doss [256]

Answer:

x=-b/2a

Step-by-step explanation:

hope that helps :)

mark as brainliest please :)

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2 years ago

Find the measures of the numbered angles.

Arte-miy333 [17]

1 = 90
2 = 65
3 = 65
4 = 25

90+25=115
180-115=65

have a merry christmas :)

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2 years ago