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3 years ago

Jack is 3 times as old as Lacy. 8 years from now the sum of their ages will be 64. How old are they now?

Mathematics

1 answer:

prisoha [69]3 years ago

5 0

Answer:

Step-by-step explanation:

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Multiply using FOIL or Table method (x + 4) (x + 5)

mylen [45]

Answer:

${x}^{2} + 9x + 20$

Step-by-step explanation:

1) Use FOIL method: (a + b) (c + d) = ac + ad + bc + bd.

${x}^{2} + 5x + 4x + 20$

2) Collect like terms.

${x}^{2} + (5x + 4x) + 20$

3) Simplify.

${x}^{2} + 9x + 20$

Therefor, the answer is x² + 9x + 20.

5 0

2 years ago

What is the answer to 1.75g x 1000mg/1g?

Lerok [7]

1750mg in 1.75g just move the decimal place over three places. so its 1750mg

8 0

3 years ago

Binghamton scholars were counting around the room. The first scholar said "672,"

Gala2k [10]

Answer:

792. each time you add ten

6 0

2 years ago

Read 2 more answers

Which expression can be written as k square root 3 where k is an integer

Damm [24]

Answer:

A simple expression is $\sqrt{48}$ = 4 $\sqrt{3}$

Step-by-step explanation:

Surds are irrational numbers expressed with respect to a square root. There are some basic rules required when dealing with surd.

Integers are numbers that do not have a decimal or fractional part i.e whole numbers. So, a simple expression that can be written as k square root 3 where k is an integer is $\sqrt{48}$ .

So that,

$\sqrt{48}$ = $\sqrt{16 * 3}$

= 4 $\sqrt{3}$

8 0

3 years ago

PLEASE HELP ILL CHOOSE BRAINLIEST!!!!

MAXImum [283]

30÷4=7.5
45÷7.5=6
you will need about 6 gallons of water to fill it.

4 0

3 years ago

Read 2 more answers