3 years ago

Place an operation sign between two of the digits to make the equation true

Mathematics

1 answer:

I am Lyosha [343]3 years ago

7 0

An addition sign between 978 and 842 would make the equation true!

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An isosceles triangle’s altitude will bisect its base. Which expression could be used to find the area of the isosceles triangle

omeli [17]

Answer:

$\dfrac{\sqrt{40}\cdot \sqrt{40}}{2}$

Step-by-step explanation:

The length of the base is the distance between the points 4+2i and 10+4i, so

$\text{Base}=|10+4i-(4+2i)|=|10+4i-4-2i|=|6+2i|=\sqrt{6^2+2^2}=\\ \\=\sqrt{36+4}=\sqrt{40}$

The middle point of the base is placed at point

$\dfrac{4+2i+10+4i}{2}=\dfrac{6i+14}{2}=7+3i$

The length of the height is the distance between the points 5+9i and 7+3i

$\text{Height}=|5+9i-(7+3i)|=|5+9i-7-3i|=|-2+6i|=\sqrt{(-2)^2+6^2}=\\ \\=\sqrt{4+36}=\sqrt{40}$

So, the area of the triangle is

$A=\dfrac{1}{2}\cdot \text{Base}\cdot \text{Height}=\dfrac{\sqrt{40}\cdot \sqrt{40}}{2}$

4 0

2 years ago

X/9 > 9 is the question and the answer is 81 but Iḿ not sure how my teacher got the answer 81

Oliga [24]

Answer:

$81 < x$

Step-by-step explanation:

$\frac{x}{9} > 9 → x > 9 \times 9 → x > 81$

* The above answer is written in reverse, which is the exact same result.

I am joyous to assist you anytime.

5 0

3 years ago

In a study of a particular brand of laptop computer, one group of 9 batteries lasted an average of 17.8 hours before needing rec

german

Yes because the results that are statistically significant are also practically significant

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3 years ago

Read 2 more answers

What is r ÷ p equal to?

marshall27 [118]

Answer:

if those are variables they can equal anything you want like r=4 and p=2 r/p = 2

Step-by-step explanation:

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2 years ago

Which pair of ratios form a proportion?

kumpel [21]

B.) 10:18 and 25:45
You can simplify this.
Divide the first part by 2.
5:9.
Divide the second half by 5.
5:9.
5:9 and 5:9

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3 years ago