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3 years ago

-4-5+4+ (-5)−4−5+4+(−5} What the answer ?

Mathematics

2 answers:

lyudmila [28]3 years ago

6 0

Answer = -20
-4-5+4+(-5)-4-5+4+(-5) =-20

Shkiper50 [21]3 years ago

6 0

Answer:

-20

Step-by-step explanation:

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Aliun [14]

Answer:

Step-by-step explanation:

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4 years ago

Evaluate the following expression. Round your answer to two decimal places.

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Answer: 2.18

Step-by-step explanation:

log(11)/log(3)=2.18

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3 years ago

A group of 20 friends were going on a picnic 7 friends were playing basketball and 5 friends were having snacks if 2 friends wer

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The problem statement tells you "7 friends were playing basketball".

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3 years ago

A standard piece of paper is 0.05 mm thick. Let's imagine taking a piece of paper and folding the paper in half multiple times.

tatyana61 [14]

Answer:

(a) $g(n)=0.05\cdot 2^n$

(b) $g^{-1}(n)=\log_{2}20g(n)$

Step-by-step explanation:

Part A

The paper's thickness = 0.05mm

When the paper is folded, its width doubles (increases by 100%).

The thickness of the paper grows exponentially and can be modeled by the function:

$g(n)=0.05(1+100\%)^n\\\\g(n)=0.05\cdot 2^n$

Part B

$g(n)=0.05\cdot 2^n\\2^n=\dfrac{g(n)}{0.05}\\ 2^n=20g(n)\\$Changing to logarithm form, we have:\\\log_{2}20g(n)=n\\$Therefore:\\g^{-1}(n)=\log_{2}20g(n)$

Part C

If the thickness of the paper, g(n)=384,472,300,000 mm

Then:

$g^{-1}(n)=\log_{2}20g(n)\\g^{-1}(n)=\log_{2}20\times 384,472,300,000\\=\dfrac{\log 20\times 384,472,300,000}{\log 2} \\g^{-1}(n)=42.8 \approx 43\\n=43$

You must fold the paper 43 times to make the folded paper have a thickness that is the same as the distance from the earth to the moon.

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3 years ago

A triangular flag has an area of 22 cm². Jon measures the height as 8 cm, what is the base length?

dedylja [7]

The base length is 5.5 cm.

Explanation:

Area of triangle = base x height x 1/2

Let b cm be the base length of the triangular flag.

22 = b x 8 x 1/2

22 x 2 ÷ 8 = b

b = 44 ÷ 8

b = 5.5

4 0

3 years ago