3 years ago

The annual fundraising goal is $100,000. How much more money is needed to reach the goal?

Mathematics

1 answer:

anzhelika [568]3 years ago

7 0

uh 100,000 bc you dont have any money

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2. Suppose (220)_b and (251)_b are the squares of consecutive integers. Determine b.

Andrei [34K]

Let $x$ and $x+1$ be these consecutive integers. For some base $b$ , we can write

$(x_{10})^2=220_b=2b^2+2b$

$((x+1)_{10})^2=251_b=2b^2+5b+1$

$x^2=2b^2+2b$

then

$x^2+1=2b^2+2b+1$

Now,

$x^2+2x+1=2b^2+5b+1$

$2x+2b^2+2b+1=2b^2+5b+1$

$\implies2x=3b$

Squaring both sides gives

$4x^2=9b^2$

and so

$4(2b^2+2b)=9b^2$

$\implies8b^2+8b=9b^2$

$\implies b^2-8b=0\implies\boxed{b=8}$

(because the base has to be non-zero)

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3 years ago

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natita [175]

Answer:

Step-by-step explanation:

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2 years ago

Is 91.7% rational or irrational

nadezda [96]

Answer: Hi! 91.7% is a rational number. Because...

Step-by-step explanation: rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Since q may be equal to 1, every integer is a rational number. Hope this helps!

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3 years ago

What is the surface area of this triangular pyramid?

noname [10]

I believe it would be 44.75 sq yards

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2 years ago

What proves m ∆ADB and ∆ADC are congruent.

AURORKA [14]

Answer: They're the same angles/measurements.

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Let me know if you have any questions.

~ Lily, from Brainly.

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3 years ago