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2 years ago

11

Round 743214 to the nearest ten thousand

1 answer:

MrRa [10]2 years ago

4 0

The answer is 740,000. I hope this helps!

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4X-3 (x²+2x)<br> Find (f-g) (4)

Helen [10]

Answer:

-11

Step-by-step explanation:

assuming 4x-3 = f(x) and the other equation = g(x)

(4x-3) - (x^2 +2x)

(4(4)-3) - (4^2 +2(4)

(16-3)-(16+8)

(13)-(24)

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2 years ago

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A circle's circumference is 600 m. What is a good approximation of the circle's area?

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Answer:
3,000m2
Explanation: None

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What is 5/6 - 1/5 =

Daniel [21]

5/6 - 1/5 = 19/30 = 0.633

Hope this helped you! Please mark brainliest if this helped you at all and have a wonderful rest of your day!

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Why am i so bad at math ;w;

zalisa [80]

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Alex scored 98,72, and 87 on his first three math test. What must he score on the next test to have an average of at least 86 (P

ss7ja [257]

Answer:

$\huge\boxed{\text{At least an } 87\%}$

Step-by-step explanation:

In order to find what score Alex must earn to have an average of 86 on all his tests, we need to first note what the formula to find the average of a data set is.

$\displaystyle \frac{x_1+x_2+...x_n}{n}$

What the formula means is that we have to add up all the values then divide by the total number of values.

Let's represent our unknown number as $x$ .

$\displaystyle \frac{98+72+87+x}{4} \geq 86$ (since we want AT LEAST an 86).

Let's solve this inequality for x.

$\frac{98+72+87+x}{4} \cdot 4 \geq 86 \cdot 4$
$98+72+87+x \geq 344$
$257 + x \geq 344$
$257 + x - 257 \geq 344 - 257$
$x \geq 87$

So, Alex must score at least an 87% on his next quiz to have an average of 86%.

Hope this helped!

8 0

2 years ago