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4 years ago

Expand. Your answer should be a polynomial in standard form. (2 + 1) (2 + 8) =

Mathematics

1 answer:

Mama L [17]4 years ago

5 0

Answer:

Step-by-step explanation:

(2 + 1) (2 + 8)

Add the terms in the brackets first.

(3) (10)

Multiply both terms.

= 30

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May I please get help with other this problem for I am confused as I have tried multiple times to get the right answer

Aleks [24]

Using pythagoras

$\begin{gathered} x^2=16^2+12^2 \\ x^2=256+144 \\ x^2=400 \\ \text{Take the square root} \\ x=20 \end{gathered}$

The final answer

$20$

5 0

1 year ago

10 In 0.5 seconds, a projectile goes from 0 to 300 m/s. What is the acceleration of the projectile?

vredina [299]

Answer: 600 m/s^2

Step-by-step explanation:

Use the first kinematic equation

$V_f=V_i+at\\300=0+a(0.5)\\a=600m/s^2$

3 0

3 years ago

Consider two markets: the market for cat food and the market for dog food. The initial equilibrium for both markets is the same,

umka21 [38]

Answer:

elasticity supply of dog food = 2.61

elasticity supply of cat food = 1.71

Step-by-step explanation:

The midpoint formula for elasticity is:

$Elasticity = \frac{(Q2-Q1)/[(Q2+Q1)/2]}{(P2-P1)/[(P2+P1)/2]}$

Point 1: Q = 39.0 and P = 5.50

Point 2: Q = 101.0 and P = 7.75

$Elasticity\ supply\ of\ dog\ food = \frac{(101.0-39.0)/[101.0+39.0)/2]}{(7.75-5.50)/[(7.75+5.50)/2]}=2.61$

Doing the same for the cat food:

$Elasticity\ supply\ of\ cat\ food = \frac{(71.0-39.0)/[71.0+39.0)/2]}{(7.75-5.50)/[(7.75+5.50)/2]}=1.71$

4 0

4 years ago

SVEN [57.7K]

Answer:

Answer Is A

Hopefully this help

Step-by-step explanation:

8 0

3 years ago

one side of a kite is 1 cm less than 4 times the length of another. if the perimeter is 38 cm, find the length of each side

lawyer [7]

We can use a system of equations to solve this.
Length 1 = x
Length 2 = y

Set up the system.
2x+2y=38
x+1=4y

Isolate the variable on one equation.
x=4y-1

Substitute that into the other equation.
2(4y-1)+2y=38

Solve.
8y-2+2y=38
10y=40
y=4

Substitute back into other equation.
x=4(4)-1=16-1=15

The lengths are 15 cm and 4 cm.

Hope this helps!

4 0

3 years ago