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3 years ago

Which property is not used to simplify the following expression?

Mathematics

2 answers:

mash [69]3 years ago

6 0

Commutative property or addition

r-ruslan [8.4K]3 years ago

5 0

(x + 2) * 5 = 5(x + 2) commutative property of multiplication

5(x + 2) = 5x + 10 distributive property of multiplication over addition

(5x + 10) - 7 = 5x + (10 - 7) associative property of addition

The only listed property that was not used was commutative property of addition.

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Need help with this problem

Zanzabum

Answer:

C. Priya needs to charge at least $21 per bracelet.

Step-by-step explanation:

$117b - 505 \ge 1952$

Add 505 to both sides.

$117b \ge 2457$

Divide both sides by 117.

$b \ge 21$

Answer: C. Priya needs to charge at least $21 per bracelet.

7 0

3 years ago

In June, a runner ran a mile in 7:45. In September, the runner ran a mile in 5:51.

mario62 [17]

The percentage of Change in time is an decrease

4 0

3 years ago

What is 6 times what equals 546?

ki77a [65]

546 divide by 6 = 91 so 91 times 6 = 546

3 0

3 years ago

The sum of two numbers is 2490 and if 6.5 percent of one no. is equal to 8.5 percent of the other, then numbers are ?? Make sure

lions [1.4K]

Answer:

The two number are :

x = 1411

y = 1079

Step-by-step explanation:

Let the two numbers = x and y

The sum of two numbers is 2490

x + y = 2490..... Equation 1

If 6.5 percent of one no. is equal to 8.5 percent of the other,

Hence:

6.5% of x = 8.5% of y

0.065x = 0.085y

Make x the subject of the Formula

x = 0.085y/0.065

x = 1.308y

We substitute 1.308y for x Equation 1

x + y = 2490..... Equation 1

1.308y + y = 2490

2.308y = 2490

y = 2490/2.308

y = 1078.8561525

y = 1079

x + y = 2490..... Equation 1

x = 2490 - y

x = 2490 - 1079

x = 1411

6 0

3 years ago

How long dose it take to travel 5km at an average speed of 8 m/s? Give your answers in minutes and seconds

eduard

Answer:

625 seconds and 10 minutes

Step-by-step explanation:

distancs=S=5km=5000m

average speed=v=8m/s

time taken=t=?

as we know that

average speed= $\frac{distance covered}{time taken}$

average speed×time taken=distance covered

here we have to find the time taken

time taken= $\frac{distance covered}{average speed}$

time taken= $\frac{5000m}{8m/s}$

time taken=625seconds

now we convert seconds into minutes

$\frac{625}{60}$

10 minutes

4 0

3 years ago