2 years ago

Determine if the following statement is true or false.

Mathematics

2 answers:

Bas_tet [7]2 years ago

7 0

Answer:

False

Step-by-step explanation:

Negative and Negative always equals positive

Negative and positive always equal negative

Murljashka [212]2 years ago

5 0

False, for example (-2)-(-3) is 1

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In a sale, there is 50% off all prices. A chair costs £17.50 in the sale. How much was it before the sale?

HACTEHA [7]

£17.50 is 50% of what number
Now the same in math:
£17.50 = .50 x n pr £17.50 = .5n
Divide both sides by .5
n= £ 35

7 0

3 years ago

Read 2 more answers

Find the circumference of the circles below. Round your answer to the nearest whole number. Use 3.14 for Pi.

Lisa [10]

Answer:

$\huge\boxed{1.\ C\approx38cm;\ 2.\ C\approx57ft;\ 3.\ C\approx50in.}$

Step-by-step explanation:

The formula of a circumference of a circle:

$C=2\pi r\\\\r-\text{radius}$

$1.\\r=6cm\\\\C=2\pi\cdot6=12\pi\\\\\pi\approx3.14\\\\C\approx12\cdot3.14=37.68\approx38(cm)\\\\2.\\r=9ft\\\\C=2\pi\cdot9=18\pi\\\\\pi\approx3.14\\\\C\approx18\cdot3.14=56.52\approx57(ft)\\\\3.\\2r=16in.\to r=8in.\\\\C=2\pi\cdot8=16\pi\\\\\pi\approx3.14\\\\C\approx16\cdot3.14=50.24\approx50(in.)$