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Kitty [74]
2 years ago
9

Select the number property that will justify the step in the following expression.

Mathematics
2 answers:
Lostsunrise [7]2 years ago
5 0
Associative property of multiplication which states :
(a * b) * c = a * (b * c)
IRISSAK [1]2 years ago
3 0
2(5 • 17) = <span>(2 • 5) 17

It is Associative Multiplication</span>
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Translate into a variable expression.<br> fifteen more than one-half of the square of z
stellarik [79]

Answer:

15 +(1/2)X z²

this is your expression plz brainlist me and follow me

5 0
3 years ago
The ratio of pens to pencils in Mrs. Bosworth's desk is 4:1. What does this mean?
anzhelika [568]
If there are 4 pens there will be 1 pencil, if there is 1 pencil there will be 4 pens
If the ratio is factored to a number, let's say 3, then there will be 12 pens for every 3 pencils
4 0
3 years ago
Julio started biking to the park traveling 8 mph, after some time the bike got a flat so Julio walked the rest of the way, trave
USPshnik [31]

Answer:

Julio travel <u>3 hours</u> by biking and <u>4 hours</u> by walking.

Step-by-step explanation:

Given:

Julio started biking to the park traveling 8 mph, after some time the bike got a flat so Julio walked the rest of the way, traveling 7 mph.

If the total trip to the park took 7 hours and it was 52 miles away.

Now, to find the time Julio travel at each speed.

The speed travelled by the bike = 8 mph.

The speed travelled by the walking = 7 mph.

Let the time Julio travel with bike be x.

And the time Julio travel by walking be y.

As, given Julio started biking to the park traveling, after some time the bike got a flat so Julio walked the rest of the way,

Thus, the total time taken:

x+y=7

y=7-x\ \ \ .......(1)

So, the distance travelled by bike:

Speed × time

8\times x=8x

And, the distance travelled by walking:

Speed × time

7\times y=7y

Now, the total distance travelled by Julio:

8x+7y=52

Substituting the value of x from equation (1) we get:

8x+7(7-x)=52

8x+49-7x=52\\\\x+49=52

<em>Subtracting both sides by 49 we get:</em>

x=3.

<em>The time Julio travelled with bike = 3 hours.</em>

Now, to get the time Julio travelled by walking by substituting the value of x:

y=7-x\\\\y=7-3\\\\y=4\ hours.

<em>The time Julio travelled by walking = 4 hours.</em>

Therefore, Julio travel 3 hours by biking and 4 hours by walking.

7 0
3 years ago
X-intercept(s) y-intercept Vertex Minimum or Maximum? Min/Max value​
garik1379 [7]

Answer:

2 ,-1 -2

Step-by-step explanation:

3 0
3 years ago
The circulation of a newsletter decreased from 6000 to 3710. Find the percent of decrease in circulation to the nearest percent.
lbvjy [14]
Percent change = ((new value) - (old value))/(old value) × 100%
  = (3710 - 6000)/6000 × 100%
  = -38.16%

The decrease in circulation is about 38%.
5 0
2 years ago
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