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3 years ago

2/15×²-3/4×+6-3/10×²+2×-15/2

Mathematics

1 answer:

SCORPION-xisa [38]3 years ago

3 0

Answer:

Step-by-step explanation:

-1/6x2-3/4x+6+2x-15/2

-1/6x2+5/4x+6-15/2

-1/6x2+5/4x-3/2

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Find the slope of the line passing through the points (-9, 7) and (7, 7)

Lina20 [59]

Answer:

The slope is zero.

Step-by-step explanation:

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3 years ago

Consider 8x2 - 48x = -104.

ki77a [65]

Answer:

$3+ 2\mathbf{i}$

$3- 2\mathbf{i}$

Step-by-step explanation:

<u>Quadratic Equation Solving</u>

We have the equation:

$8x^2-48x=-104$

Divide by 8:

$x^2-6x=-13$

Now complete the squares so the left side is a perfect square of a binomial:

$x^2-6x+9=-13+9=-4$

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The solutions are:

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3 years ago

Prove x²+y² = (x+y) (x-y)

gtnhenbr [62]

Answer:

(x+y)(x-y)

x^2 - xy + xy - y^2

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2 years ago

The numbers Of students in the four sixth-grade classes at Northside School are 26,19,,34,and 21.Use the properties to find the

Dafna11 [192]

Basically there are 3 addition properties and they are associative property, identity property, and commutative property.

Commutative property is just changing the order of the addends. Example: 26+19+34+21= 21+34+19+26

Identity Property is just adding a 0 to the number that doesnt change anything. Example: 26+19+34+21 +0 = 100

Associative property is just changing the grouping of the addends. Example: (26+19) + (34+21)

I know these properties may be complicated i know inhate them too haha but i hope i helped :) if you want you can search up the distributive property too but its with multiplication and addition combined and its harder but i think these are the 3 main properties.

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3 years ago

Lenny worked 7 hours on Wednesday, 6 hours on Thursday, and 9 hours on Friday. His gross pay for all three days was $196.90.

tatyana61 [14]

Answer:

$8.95

Step-by-step explanation:

you add 7+6+9=22 196.90 divided by 22 is 8.95 hope this helps

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2 years ago