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3 years ago

what would the phrase "twice the difference of a number and 5" look like as a variable expression? 2(x 5) 2(x−5) −5 2x 2 2(x−5)

Mathematics

1 answer:

svetoff [14.1K]3 years ago

5 0

Twice (2 ·) the difference (subtraction) of a number (n) and 5

2 (n - 5)

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Write 1.33 as a percentage

ryzh [129]

1.33 as a percent would be ...................
133%
hope this helps!!!!!!!!!!!!

4 0

3 years ago

146+8 1/5<br> How do I solve this

cluponka [151]

Step-by-step explanation:

$146 + 8 \frac{1}{5} \\ \\ = 146 + \frac{8 \times 5 + 1}{5} \\ \\ = \frac{146 \times 5 + 40 + 1}{5} \\ \\ = \frac{730 + 41}{5} \\ \\ = \frac{771}{5} \\ \\ = 154 \frac{1}{5} \\ \\ thus \\ \\ \huge \orange{ \boxed{146 + 8 \frac{1}{5} = 154 \frac{1}{5}}}$

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3 years ago

Lily has two times as much money invested in 8% stocks as she has in bonds paying 6%. How much she has invested in stocks if her

EleoNora [17]

Answer:

Final answer is $4440.

Step-by-step explanation:

Let amount of money invested in 8% stock = x

Let amount of money invested in 6% stock = y

then total money invested $325.6 gives equation

8% of x + 6% of y = 325.6

0.08x + 0.06y = 325.6

8x + 6y = 32560...(i)

other equation will be x=2y...(ii)

plug (ii) into (i)

8x + 6y = 32560

8(2y) + 6y = 32560

16y+ 6y = 32560

22y = 32560

$y=\frac{32560}{22}$

y=1480

plug y=1480 into (ii)

x=2y=2(1480)=2960

Then total money invested in stocks = x+y= 1480+2960=4440

Hence final answer is $4440.

5 0

3 years ago

i'm giving brainiest right now so first one who has correct gets brainiest!!The length of one side of a square pond is 15 feet.

marysya [2.9K]

It’s easiest to think about it this way:

If the pond is 15 feet wide, then adding 3 feet to each side would increase the side length to the square by six feet (3 feet on each side). This makes the area within the square equal to 18x18 feet, or 324 square feet. But, this isn’t the area of the sidewalk, it’s the area of the sidewalk plus the area of the pool.

The pool is fifteen feet wide, which means that it has an area of 225 square feet. So, to find the area of the side walk, we can subtract the area of the pool from the area of the pool and sidewalk, which will give us the area of the sidewalk by itself.

324-225=99 square feet.

The pool has an area of 225 square feet, and the sidewalk has an area of 99 feet.

3 0

3 years ago

Two plants, labeled A and B, are both 3 centimeters in height. One month later, plant A is 7 centimeters taller. Plant B is half

Oliga [24]

For this case, we have initially both plants are 3 cm tall.

If a month later the plant A is 7 cm higher, it means that its height will be:

$A = 3 + 7 = 10 \ cm$