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3 years ago

Write an expression that can be used to multiply 6 times 198 mentally

Mathematics

1 answer:

puteri [66]3 years ago

5 0

6*100
6*90
6*8

add them all up and you get 1188..the answer

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Graph the solution of y - 4 < 2 on a number line.

Luda [366]

Answer:

y<6

Step-by-step explanation:

You will solve it like a one-step equation but just leave the less then symbol. so anything less then 6 is your answer

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2 years ago

Work out the height of a parallelogram with base of 6cm and area of 27cm²

professor190 [17]

To find the height of the parallelogram you would divide 6 from the area, 27, to get the answer 4.5,
So h=4.5

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3 years ago

Factories 54m3n + 81m4n2 b) 15x2y3z + 25x3y2z + 35x2y2z

Oliga [24]

Part a)

Given the expression

$54m^3n\:+\:81m^4n^2$

Apply exponent rule: $a^{b+c}=a^ba^c$

$54m^3n\:+\:81m^4n^2=54m^3n+81m^3mnn$ ∵ $m^4n^2=m^3mnn$

Rewrite 81 as 3 · 27

Rewrite 54 as 2 · 27

$=2\cdot \:27m^3n+3\cdot \:27m^3mnn$

Factor out the common term: 27m³n

$=27m^3n\left(2+3mn\right)$

Therefore,

$54m^3n\:+\:81m^4n^2=54m^3n+81m^3mnn=27m^3n\left(2+3mn\right)$

Part B)

Given the expression

$15x^2y^3z+25x^3y^2z+35x^2y^2z$

Apply exponent rule: $a^{b+c}=a^ba^c$

$15x^2y^3z+25x^3y^2z+35x^2y^2z=15x^2y^2yz+25x^2xy^2z+35x^2y^2z$

Rewrite as

$=3\cdot \:5y^2x^2zy+5\cdot \:5y^2x^2zx+7\cdot \:5y^2x^2z$

Factor out common term 5y²x²z

$=5y^2x^2z\left(3y+5x+7\right)$

Therefore,

$15x^2y^3z+25x^3y^2z+35x^2y^2z=5y^2x^2z\left(3y+5x+7\right)$

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3 years ago

Write an algebraic expression for the word expression: 15 divided by the sum of "d" and 3

Yuki888 [10]

the answer is

15/(3+d)

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3 years ago

40 pts! solve the following equation by completing the square. 4x^2 - 16x + 8 = 0

sergij07 [2.7K]

Answer:

Step-by-Step

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3 years ago

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