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3 years ago

Write an expression that can be used to multiply 6x198 mentally

Mathematics

1 answer:

AnnZ [28]3 years ago

6 0

6×100 + 6×90 + 6×8 would be the answer.

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Last Thursday was costume day at Emmet's school. 108 out of the 120 students at the school wore a costume. What percentage of th

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Answer:

90%

Step-by-step explanation:

100%=120 pupils

108pupils

108 x 100= 10800/120=90 %

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3 years ago

isabel earned 350 points while she was playing blasting robot. isabel's mom earned 3 times as many points as isabel. how many po

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Need help ASAP

joja [24]

Part (1) : The solution is $729$

Part (2): The solution is $\frac{1}{16 x^{8}}$

Part (3): The solution is $\frac{2 x^{2}}{3 y z^{7}}$

Explanation:

Part (1): The expression is $3^{2} \cdot3^{4}$

Applying the exponent rule, $a^{b} \cdot a^{c}=a^{b+c}$ , we get,

$3^{2} \cdot 3^{4}=3^{2+4}$

Adding the exponent, we get,

$3^{2} \cdot3^{4}=3^6=729$

Thus, the simplified value of the expression is $729$

Part (2): The expression is $\left(2 x^{2}\right)^{-4}$

Applying the exponent rule, $a^{-b}=\frac{1}{a^{b}}$ , we have,

$\left(2 x^{2}\right)^{-4}=\frac{1}{\left(2 x^{2}\right)^{4}}$

Simplifying the expression, we have,

$\frac{1}{2^4x^8}$

Thus, we have,

$\frac{1}{16 x^{8}}$

Thus, the value of the expression is $\frac{1}{16 x^{8}}$

Part (3): The expression is $\frac{2 x^{4} y^{-4} z^{-3}}{3 x^{2} y^{-3} z^{4}}$

Applying the exponent rule, $\frac{x^{a}}{x^{b}}=x^{a-b}$ , we have,

$\frac{2x^{4-2}y^{-4+3}z^{-3-4}}{3}$

Adding the powers, we get,

$\frac{2x^{2}y^{-1}z^{-7}}{3}$

Applying the exponent rule, $a^{-b}=\frac{1}{a^{b}}$ , we have,

$\frac{2 x^{2}}{3 y z^{7}}$

Thus, the value of the expression is $\frac{2 x^{2}}{3 y z^{7}}$

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3 years ago

Help needed asap idk anything

Licemer1 [7]

Answer:

49x +196x.... or 245x

Step-by-step explanation:

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Point w is located at (6,2) where is W after a 180 degrees counterclockwise rotation

gregori [183]

W will be at the points (-6,-2) after 180 degrees counterclockwise rotation

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3 years ago