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tatuchka [14]
3 years ago
12

Which is the sum of 3.15 × 107 + 9.3 × 106? Write your answer in scientific notation.

Mathematics
1 answer:
BartSMP [9]3 years ago
7 0

Answer:

Scientific Notation:

1.32285 × 10^3

E-Notation:

1.32285e3

Engineering Notation:

1.32285 × 10^3

Real Number:

1322.85

Step-by-step explanation:

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Lainey bought a set of 20 markers for 6 dollars​
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Answer:

$3.33

Step-by-step explanation:

Divide 20 by 6

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Lydia wants to find the height of a flagpole. She measures the height of a tree and the length of the shadow it casts. The tree
sesenic [268]

draw a diagram.

the two are similar bc of AAsimilarity

so 8.8 is to 4 as 22 is to x

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5 0
3 years ago
one leg of a right triangle is 5 millimeters shorter than the longer leg and the hypotneuse is 5 millimeters longer than the lon
Makovka662 [10]
The answer, in short, is that the short leg equals 15 mm, the long leg equals 20 mm, and the hypotenuse equals 25mm. but if you'd like to see how I solved it, here are the steps.
-----------------------------
The Pythagorean theorem (also known as Pythagoras's Theorem) can be used to solve this. This theorem states that one leg or a right triangle squared plus the other side of that same triangle squared equals the hypotenuse of that triangle squared. To put it in equation form, L² + L² = H².

Let's call the longer leg B, the shorter leg A, and the hypotenuse H.
From the question, we know that A = B - 5, and H = B + 5. 

So if we put those values into an equation, we have (B - 5)² + B² = (B + 5)²

Now, to solve. Let's square the two terms in parentheses first:
(B² - 5B - 5B + 25) + B² = B² + 5B + 5B + 25

Now combine like terms:
2B² -10B + 25 = B² + 10B + 25

And now we simplify. Subtract 25 from each side:
2B² - 10B = B² + 10B

Subtract B² from each side:
B² - 10B = 10B

Add 10B to each side:
B² = 20B

And finally, divide each side by B:
B = 20

So that's the length of B. Now to find out A and H.
A = B - 5, so A = 15.
H = B + 5, so H = 25.

And your final answer is A = 15mm, B = 20mm, and H = 25mm
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Answer:

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Step-by-step explanation:

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ALL MY POINTS!
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Answer:

I believe it is y=1.83x

Step-by-step explanation:

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