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IRINA_888 [86]
3 years ago
10

What is 8x squared +7=0 using the quadratic formula

Mathematics
1 answer:
lisabon 2012 [21]3 years ago
5 0
I think you mean 8x^2 + 7 =0
a = 8 b = 0 c = 7
x= [-b +- square root (b^2 - 4*a*c)] / 2a
x = [0 +-  square root (0 - 4*8*7)] / 2*8
x = +- square root (-224) / 16
x = +- <span> <span> <span> 14.9666295471 * i </span> </span> </span> / 16
x = + <span> <span> <span> 0.9354143467 </span> </span> </span> i
x = - <span> <span> 0.9354143467 </span> </span> i
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How much cardboard needed to construct a rectangular prism measuring 15 inches by 13 inches by 7 inches
aleksandrvk [35]
1,365

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4 0
3 years ago
Cedric and Josh both ordered the same size pizzas at Marco’s Pizzeria; however, they ordered different toppings. Marco’s charges
Oksanka [162]
Let
C---------> <span>the cost of a pizza
</span>t----------> <span>number of toppings

we know that
</span>$15.74-3t=$14.49-2t
15.74-14.49=3t-2t-------------> t=1.25

the cost of one topping is $1.25
and the cost of one pizza <span>without topping is
</span>15.74-3*1.25--------> $11.99

then
<span>an equation for the cost of a pizza, C, as a function of the number of toppings, t ordered is
</span>C=11.99+1.25t

the answer is 
C=11.99+1.25t
6 0
3 years ago
Read 2 more answers
Help with this immediately​
charle [14.2K]

x= 2

Step-by-step explanation:

The answer for what does x= is,

x = 2

6 0
3 years ago
Please help me! I will give Brainlylist
Zinaida [17]

Answer:

I would say that they are different because if x - a has a value to the equation then that means a - x will not have the same value because it may be rearranged to a different equation but that doesn't mean that they will have the same value. that explain why x - a and a - x are not the same

7 0
2 years ago
Hello, thanks for answering. Your a hero. :)
lyudmila [28]
They added it wrong. They added it like this:

100 + 700 + 800 + 560
When it shouldve been this:

100 + 70 + 80 + 56
They just added a place marker in all numbers below 100.
5 0
4 years ago
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