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3 years ago

Factor completely, then place the factors in the proper location on the grid. 9 - 6a - 24a2

Mathematics

2 answers:

tia_tia [17]3 years ago

6 0

-3 (2a - 1) (4a + 3)

andre [41]3 years ago

3 0

-3 (2a - 1) (4a + 3)

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For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation.

viva [34]

13 = 1.625 * 8
26 = 1.625 * 16
39 = 1.625 * 24
Therefore y vary directly with x.
Answer: C ) yes ; y = 1.625 x

8 0

4 years ago

The sum of three numbers is 106. The second number is 4 more than three times the first number. The third number is 6 less than

VikaD [51]

Step-by-step explanation:

let three no. be x, y, z

y=3x+4

z=2x-6

x+3x+4+2x-6=106

6x=108

x=18

Three numbers are 18, 3 (18)+4, 2 (18)-6

=18,58,30

4 0

3 years ago

Let p be the percent decrease in the price of a DVD recorder that is marked down from $500 to $400. Which proportion can be used

Effectus [21]

The correct answer is C. $400-$500/$500=p/100.

The formula for percent change is as follows.

New - Old/ Old = Percent change.

With 500 being the old score, we would look for it to be subtracted and on the bottom. C is the only option that has that.

3 0

3 years ago

The volumes of two similar solids are 210 m3 and 1,680 m3. The surface area of the larger solid is 856 m2. What is the surface a

Ksju [112]

we know that

$scale \ factor^{3}=\frac {volume\ larger\ solid }{volume\ smaller\ solid}$

Find the value of the scale factor

$volume\ larger\ solid= 1,680\ m^{3} \\ volume\ smaller\ solid= 210\ m^{3}$

substitute the values in the formula

$scale \ factor^{3}=\frac {1,680 }{210}$

$scale \ factor^{3}=8$

$scale \ factor=\sqrt[3]{8} \\ scale \ factor= 2$

Find the surface area of the smaller solid

we know that

$scale \ factor^{2}=\frac {surface\ area\ larger\ solid }{surface\ area\ smaller\ solid}$

$surface\ area\ larger\ solid =856\ m^{2} \\ scale\ factor =2$

$surface\ area\ smaller\ solid= \frac{surface\ area\ larger\ solid}{scale \ factor^{2}}$

substitute the values

$surface\ area\ smaller\ solid= \frac{856}{2^{2}}$

$surface\ area\ smaller\ solid=214\ m^{2} }$

therefore

the answer is

The surface area of the smaller solid is equal to $214\ m^{2}$

3 0

4 years ago

Read 3 more answers

Karen has 120. if she saves 24 per week, how many weeks will it take her to have a total of 312

son4ous [18]

Answer:

13 weeks

Step-by-step explanation:

312/24=13

3 0

4 years ago