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3 years ago

If the discriminant of an equation is positive, which of the following is true of the equation?

1 answer:

3 0

D>0 that means it has two real solutions (unequal).
It can have one solution only if D=0 and complex solutions only if D<0. 

D means discriminant

Answer: B it has two real solutions

hope this helps :)

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Making Sense of Slope - Item 32544

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3 years ago

A bacteria sample can be modeled by the function f(x) - 350(1.20) which gives the number of bacteria in the sample at the end of

marissa [1.9K]

Answer: A) The initial number of bacteria is 350.

Step-by-step explanation:

Exponential growth equation: $f(x)=A(1+r)^x$ , where A=Initial value, r= growth rate. (i)

Given: A bacteria sample can be modeled by the function $f(x) = 350(1.20)$ which gives the number of bacteria in the sample at the end of x days.

Here, $f(x)=350(1+0.20)$

Compare this equation to (i) , we get A = 350 and r= 0.20 = 20% (growth rate)

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A) The initial number of bacteria is 350.

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3 years ago

Annie has al metre piece of wire.

KIM [24]

Answer:

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= 64 cm

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3 years ago

Donnie has18 melons. Each melon weighs 3 pounds. How many pounds of melons does Donnie have in all? A. 6 pounds B. 11 pounds C.

pentagon [3]

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3 years ago

Which expression is equivalent to (2^5)^-2

irinina [24]

1/1024 is the correct answer. First you had to apply exponent rule, and it gave us, $\frac{1}{(2^5)^2}$ , or $2^5^*^2$ . Then you can also refine, and it gave us, $2^10$ , or $\frac{1}{2^10}$ . And it gave us the answer is $2^1^0=2*2*2*2*2*2*2*2*2*2=1024$ , or 1/1024 is the correct answer. Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie

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3 years ago