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3 years ago

Rewrite 1/2(x+3)(x+5) in standard form

Mathematics

1 answer:

topjm [15]3 years ago

3 0

ANSWER:

1/2 (x+3)(x+5)

= 1/2(x^2+8x+15)_This is the right answer

= x^2/2 + 8x/2 + 15/2

= x^2/2 + 4x + 15/2

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How do i evaluate p=2l+2w if l=5 and w =3

BARSIC [14]

Answer: p = 16

Step-by-step explanation:

Replace the I with 5 and the W with 3.

2(5) + 2(3) = 10 + 6 = 16

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3 years ago

the half-life of isotope X is 2.0 years. How many years would it take for a 4.0mg sample of X to decay and have only 0.50 mg of

shepuryov [24]

After 2.0 years, the 4.0 mg sample decays to 2.0 mg.

After another 2.0 years (total 4.0 years), the 2.0 mg sample decays to 1.0 mg.

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So it takes 6.0 years for 4.0 mg to decay to 0.50 mg.

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3 years ago

A system of equations is shown below. y = –x – 3 5x + 2y = 9 What is the solution to this system?

erastovalidia [21]

Answer:

$x=5\ and\ y=-8$

The solution of the system can be given as (5,-8).

Step-by-step explanation:

Given system of equations:

$y=-x-3$

$5x+2y=9$

To solve the given system of equations:

Solution:

We will use substitution to solve the given system.

We will substitute the $y$ values in terms of $x$ from the equation $y=-x-3$ into the other equation to solve for $x$

Substituting $y=-x-3$ into $5x+2y=9$ .

We have:

$5x+2(-x-3)=9$

Using distribution.

$5x-2x-6=9$

Combining like terms.

$3x-6=9$

Adding 6 both sides.

$3x-6+6=9+6$

$3x=15$

Dividing both sides by 3.

$\frac{3x}{3}=\frac{15}{3}$

∴ $x=5$

Plugging in $x=5$ into $y=-x-3$ .

We have,

$y=-5-3$

∴ $y=-8$

The solution of the system can be given as (5,-8).

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3 years ago

Show many sandwiches will each group get? And How much will each group member receive?

marishachu [46]

There will be 6 groups so we divide 27 by 6 which equals 4.5. soo each group will be getting 4. everyone would get atleast one with 3 left over.

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4 years ago

A hose fills an empty fish tank with 24 gallons of water in 8 minutes. At that same rate, how many minutes will it take the hose

kolezko [41]

Answer:

$\frac{8}{24} = \frac{x}{60}$

24x = 8*60

24x = 480

x = 20

Step-by-step explanation:

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3 years ago

Rewrite 1/2(x+3)(x+5) in standard form​

Rewrite 1/2(x+3)(x+5) in standard form