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Aleonysh [2.5K]

3 years ago

10

Factor and solve x^2-8x-20 using the coefficient of 1 method

2 answers:

Svetllana [295]3 years ago

6 0

Answer:

What is the subject is it alegrbra

Step-by-step explanation:

Alex73 [517]3 years ago

3 0

I’m not positive but (x-10)(x+2)

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Last week Isaiah and his roommates ate 3/8 of a carton of yogurt, and this week they ate

Sergio [31]

Answer: 5/24

Step-by-step explanation:

The problem is 7/12-3/8. I got a common denominator of 24, then multipled 8 and 3 by 3, and 7 and 12 by 2. The problem is now 14/25-9/24, which equals 5/24

6 0

2 years ago

A car was sold 24 standard washed in a day , which was 25% of their total sales for that day . What was the total amount of wash

-Dominant- [34]

Answer:

$96$

Step-by-step explanation:

GIVEN: A car was sold $24$ standard washed in a day , which was $25\%$ of their total sales for that day.

TO FIND: Total amount of washes that the car wash sold that day.

SOLUTION:

Let the total sales of car washes sold for that day $=x$

total number of standard car washes sold $s=24$

As, total standard car washes sold are $25\%$ of total sales in a day

$s=\frac{25}{100}x$

putting value in equation

$24=\frac{25}{100}x$

$x=\frac{24}{25}\times100$

$x=96$

Hence the total number of car washes sold that day are $96$

4 0

3 years ago

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

3 years ago

A segment has endpoints at (3,−4) and (3,−17) How many units long is the segment?

Zigmanuir [339]

The segment is 13 units long.

4 0

3 years ago

how many outfits of shoes does a female have for school if she has the choice of 2 pairs of shoes, 4 skirts, and 5 tops in her w

frez [133]

Answer:

if you are asking for a math equation then 2+4+5=11

Step-by-step explanation:

4 0

3 years ago