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3 years ago

10

S y = -9 a solution of y + 1 = 8?

1 answer:

Alenkasestr [34]3 years ago

8 0

Answer:

what, its -9 so it'll be -8?

Step-by-step explanation:

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If f(x)=x^2+3 and g(x)= -x-1 find the value of:

dedylja [7]

$f(x)=x^2+3 \\ g(x)= -x-1 \\ 1. (g+f)(2)=g(2)+f(2)=(-x-1)+ (x^{2} +3)= x^{2} -x+2= (2)^{2} -(2)+2=4 \\ 2. (f/g)(1)=\frac{f(1)}{g(1)}= \frac{x^2+3}{-x-1} = \frac{(1)^2+3}{-(1)-1} = \frac{4}{-2} =-2$
$3. (g-f)(6) =g(6)-f(6)=(-x-1)-( x^{2} +3)=- x^{2} -x-4 \\ =- (6)^{2} -(6)-4=-46$

4 0

3 years ago

The owner of a music store received a shipment of stereos at a cost of $160 each. What will the selling price be if he applies a

kumpel [21]

The selling price will be $232 if he applies a 45% markup.

Step-by-step explanation:

Cost of each stereo = $160

Mark up = 45%

Amount of mark up = $\frac{45}{100}*160$

Amount of mark up = $\frac{7200}{100} = \$72$

Selling price = Cost of stereo + mark up

Selling price = 160 + 72 = $232

The selling price will be $232 if he applies a 45% markup.

Keywords: addition, markup

Learn more about addition at:

#LearnwithBrainly

4 0

3 years ago

Given the equation y=kx where y=1.2 and x=1.5, what is the value of k?

kakasveta [241]

Answer:

The value of k is 0.8

Step-by-step explanation:

we have

$y=kx$

This linear equation represent a direct variation

we have

y=1.2, x=1.5

substitute in the equation

$1.2=1.5k$

solve for k

divided by 1.5 both sides

$k=1.2/1.5=0.8$

The linear equation is

$y=0.8x$

7 0

4 years ago

HELP. John his a fish tank at home. The tank is rectangular in shape and has a volume of 192 cubic feet ifitis 6 long and 4 feet

Levart [38]

Answer:

B

Step-by-step explanation:

We need to find a answer that multiplies with 4 and 6 to 192.

4 x 6 x 9 doesn't equal 192 (It equals 216)

4 x 6 x 8 does equal 192

4 x 6 x 12 doesn't equal 192 (It equals 288)

4 x 6 x 48 doesn't equal 192 (It equals 1152)

8 0

3 years ago

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Which property can be justified using the ratios in triangle XYZ

Kruka [31]

This is C. cos Z = sin (90 - Y)

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3 years ago

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