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2 years ago

5

Help me plz with this I will make brainllest please help

2 answers:

Vitek1552 [10]2 years ago

3 0

Answer:

5

Step-by-step explanation:

5×7×2=2×5×7

hope this helps!!

IgorC [24]2 years ago

3 0

Answer:

5

Step-by-step explanation:

communtative property is just mixing around teh numbers for a different equation. Same numbers, different order

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A number increased by 331 is equal to 761. Find the number.

Hoochie [10]

Answer:

430

Step-by-step explanation:

761-331=430

5 0

3 years ago

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precalculus help! i'm having some trouble with my summer assignment. help would be very appreciated :)))

IgorC [24]

6.

$y^2\sqrt[8]{8}$

Step-by-step explanation:

$\sqrt[8]{8*y*y*y*y*y*y*y*y*y*y*y*y*y*y*y*y}$

Since there are eight y's in two groups we can take them out which turns into

$y^2\sqrt[8]{8}$

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3.

4 0

3 years ago

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Find all solutions to x³+3x² − 9x − 27 = 0 by factoring the equation.

SCORPION-xisa [38]

Answer:

The solutions are $x=-3,\:x=3$

Step-by-step explanation:

To factor this cubic polynomial $x^3+3x^2-9x-27$ you must:

Group the polynomial into two sections

$x^3+3x^2-9x-27=\left(x^3+3x^2\right)+\left(-9x-27\right)$

Factor out -9 from $(-9x-27)$

$(-9x-27)=-9\left(x+3\right)$

Factor out $x^2$ from $(x^3+3x^2)$

$(x^3+3x^2)=x^2\left(x+3\right)$

$x^3+3x^2-9x-27=-9\left(x+3\right)+x^2\left(x+3\right)$

Factor out common term $x+3$

$-9\left(x+3\right)+x^2\left(x+3\right)=\left(x+3\right)\left(x^2-9\right)$

$x^3+3x^2-9x-27=\left(x+3\right)\left(x^2-9\right)$

Factor $x^2-9$

$x^2-9=\left(x+3\right)\left(x-3\right)$

$x^3+3x^2-9x-27= \left(x+3\right)\left(x+3\right)\left(x-3\right)$

$x^3+3x^2-9x-27=\left(x+3\right)^2\left(x-3\right)=0$

Using the Zero Factor Theorem: = 0 if and only if = 0 or = 0

$x+3=0, \quad{x=-3}\\x-3=0, \quad{x=3}$

The solutions are

$x=-3,\:x=3$

3 0

2 years ago

A trapezoid with bases that measure 8 inches and 11 inches has a height of 3 inches. What is the area of the trapezoid?

gavmur [86]

Area= 1/2(height)×(base↓1+base↓2)
Area=1/2(3)×(8+11)
Area=1/2(3)×(19)
Area=1/2(57)
Area=57/2 OR 28.5
Thus, the area of the trapezium is 28.5inches^2

3 0

3 years ago

Indicate the equation of the line through (2, -4) and having slope of 3/5.

Nastasia [14]

Y = mx + b.....the m is for the slope , (2,-4)...x = 2 and y = -4
now we sub
-4 = 3/5(2) + b
-4 = 6/5 + b
-4 - 6/5 = b
-20/5 - 6/5 = b
- 26/5 = b

so ur equation is : y = 3/5x - 26/5 <== slope intercept form
or if u need it in standard form :
y = 3/5x - 26/5....(5)
5y = 3x - 26
-3x + 5y = -26...(-1)
3x - 5y = 26 <==standard form

5 0

2 years ago

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