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3 years ago

Factor by grouping:

2 answers:

3 0

$(x-y)^2=x^2-2xy+y^2\\---------------------------\\\\4-12r+9r^2=2^2-2\cdot2\cdot3r+(3r)^2=(2-3r)^2$

$other\ method:\\\\4-12r+9r^2=4-6r-6r+9r^2=2(2-3r)-3r(2-3r)\\\\=(2-3r)(2-3r)=(2-3r)^2$

faust18 [17]3 years ago

3 0

Because:
$(a-b)^2=a^2+2ab+b^2$

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A charity received a donation of 25.6 million. If this represents 54% of the charity‘s donated funds, what is the total amount o

Stells [14]

Answer:

Step-by-step explanation:

100%-54%=46%

46%*25.6m=11,776,000

25,600,000+11,776,000=

37,376,000 Answer

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3 years ago

Mikayla evaluated the expression 0.86 × 23.4 using the steps shown below.

Serga [27]

Answer:

Mikayla moved the decimal incorrectly.

Step-by-step explanation:

mikayla evaluated the expression 0.86 × 23.4 using the steps shown below.

0.86

× 23.4

344

2580

+ 17200

= 201.24

LEts do the multiplication without decimals

8 6

x 2 3 4

--------------------

3 4 4

2 5 8 0

1 7 2 0 0

------------------------------

2 0 1 2 4

0.86 has two numbers after the decimal point and 23.4 has one number after the decimal point

So we move 3 places to the left ( 20.124)

Mikayla moved the decimal incorrectly.

8 0

3 years ago

Read 2 more answers

A 4 liter bottle of Shout laundry detergent cost $7.99. A 6.5 liter bottle of Sun detergent cost $16.99. Which unit rate is lowe

blagie [28]

Answer:

4 liter detergent

Step-by-step explanation:

7.99/4=1.9975

16.99/6.5=2.6138

7 0

3 years ago

What is the point slope form of the line with slope 25 that passes through the point (−4, −7)?

Arisa [49]

Answer:

Option A: $y+7 = 25(x+4)$ is the correct answer.

Step-by-step explanation:

The point-slope form of an equation of a line is given by:

$y-y_1 = m(x-x_1)$

Here:

m is the slope of the line

$(x_1,y_1)$ are the coordinates of the point from which the line passes.

Now looking at the given question:

$m = 25\\(x_1,y_1) = (-4,-7)$

Putting the values in the general form of point-slope form of equation of line

$y-(-7) = 25\{x-(-4)\}\\y+7 = 25(x+4)$

Hence, the point-slope form of given line is:

$y+7 = 25(x+4)$

Observing the option given, it can be concluded that Option A: $y+7 = 25(x+4)$ is the correct answer.

6 0

3 years ago

Finance - Sheryl and Carol work at the same company and make the same salary of $64,000 per year. Carol deposits 8% of their sal

MrMuchimi

Answer:

$1792

Step-by-step explanation:

The problem statement tells you that the 8% of her salary that Carol puts in her 401(k) plan is not subject to income tax. Therefore, she is taxed on .08·64000 = 5120 less income than is Sheryl, so saves

0.35·$5120 = $1792

in income taxes over what Sheryl pays.

7 0

3 years ago