What is the square root of -6.25

Mathematics

1 answer:

oksano4ka [1.4K]3 years ago

8 0

The answer is 2.5
Hope this helps you

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What two ways can you find the product of 8x997 using mental math

ss7ja [257]

8=10-2 or
997=1000-3
so we can use distributive property
remember, a(b+c)=ab+ac

for the first one
8(997)=(10-2)(997)=997(10-2)=997(10)+997(-2)=9970-1994=7976

2nd one
8(997)=8(1000-3)=8(1000)+8(-3)=8000-24=7976

7 0

3 years ago

Can someone please help me with this question ,

ollegr [7]

(x+6)(x+9) = 0
x+6 = 0 or x+9 = 0
x = -6 x = -9

Answer is A. -6 and -9

8 0

3 years ago

Work out the size of one of the exterior angles

hodyreva [135]

Given Information :-

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A polygon with 10 sides ( Decagon )

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To Find :-

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The value of one of the exterior angles

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Formula Used :-

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$\qquad \diamond \: \underline{ \boxed{ \pink{ \sf Exterior ~angle = \dfrac {360^\circ}{no. ~of~sides}}}} \: \star$

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Solution :-

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Putting the given values, we get,

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$\sf \dashrightarrow Exterior ~angle = \dfrac{360 ^\circ}{10} \: \: \\ \\ \\ \sf \dashrightarrow Exterior ~angle = \frac{36 \cancel{0}^\circ}{ \cancel{10}} \: \: \\ \\ \\ \sf \dashrightarrow Exterior ~angle = \underline{ \boxed{ \frak{ \red{36^\circ}}}} \: \star \\ \\$