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2 years ago

which property does each equation demonstrate? x2 2x = 2x x2 (3z4 2z3) – (2z4 z3) = z4 z3 (2x2 7x) (2y2 6y) = (2y2 6y) (2x2 7x)

Mathematics

2 answers:

Black_prince [1.1K]2 years ago

7 0

Answer: commutative, closure, commutative

Step-by-step explanation:

idk how to explain it but i checked it and it's correct

Readme [11.4K]2 years ago

3 0

Answer:

commutative property,closer property,commutative property

Step-by-step explanation:

You might be interested in

A car company sells a scale model to of the size of one of its cars.

mixer [17]

Answer:

$w = 13500$ --- real windscreen

$v = 408$ --- scale volume

Step-by-step explanation:

Given

$k = \frac{1}{10}$ --- scale factor

See attachment

Required

Complete the table

To get the windscreen (w) of the real car, we do the following computation

$w = \frac{w_{scale}}{k^2}$

This gives:

$w = \frac{135}{(1/10)^2}$

$w = \frac{135}{1/100}$

$w = 13500$

Next, the volume (v) of the scale mode

We make use of the following computation

$v = v_{real} * k^3$

So, we have:

$v = 408000 * (1/10)^3$

$v = 408000 * 1/1000$

$v = 408$

7 0

2 years ago

Which of the following statements about 42xy – 49x + 30y – 35 are true? Check all of the boxes that apply. One of the factors is

kipiarov [429]

Answer:

One of the factors is (7x + 5).

One of the factors is (6y – 7).

Step-by-step explanation:

3 0

2 years ago

Three percent of Jennie’s skin cells were burned when she escaped from a fire. If 3.7×10’(of her skin cells were burned then, ho

lora16 [44]

Answer:

The quantity of Jennie's skin cell were not burned is 119.601 × $10^{10}$ .

Step-by-step explanation:

Given as :

The percentage of Jennie's skin cell were burned = 3 %

The quantity of Jennie's skin cell were burned = 3.7 × $10^{10}$

Let The quantity of Jennie's skin cell were not burned = x

Let Total quantity of whole skin cell = n

<u>Now, According to question</u>

The quantity of Jennie's skin cell were burned = Total quantity of whole skin cell × percentage of Jennie's skin cell were burned

i.e 3.7 × $10^{10}$ = n × 3 %

Or, 3.7 × $10^{10}$ = n × $\dfrac{3}{100}$

Or, n = 3.7 × $10^{10}$ × $\dfrac{100}{3}$

Or, n = $\frac{3.7\times 10^{12}}{3}$

i.e n = 1.233 × $10^{12}$

Or, Total quantity of whole skin cell = n = 1.233 × $10^{12}$

<u>Now, Again</u>

∵ percentage of Jennie's skin cell were burned = 3 %

So, percentage of Jennie's skin cell were not burned = 100 % - 3 % = 97 %

so , The quantity of Jennie's skin cell were not burned = 97 % of Total quantity of whole skin cell

Or, x = $\frac{97}{100}$ × n

Or, x = $\frac{97}{100}$ × 1.233 × $10^{12}$

∴ x = 119.601 × $10^{10}$

So, The quantity of Jennie's skin cell were not burned = x = 119.601 × $10^{10}$

Hence, The quantity of Jennie's skin cell were not burned is 119.601 × $10^{10}$ . Answer

6 0

2 years ago

If G is midpoint of FH, find FG

pochemuha

The answer is 8 ihinghkki

8 0

2 years ago

it says priya's family exchanged 250 dollars for 4,250 pesos. Riya bought a sweater for 510 pesos. how many did the sweater cost

AfilCa [17]

It says priya's family exchanged 250 dollars for 4,250 pesos. Riya bought a sweater for 510 pesos. how many did the sweater cost?

6 0

2 years ago

Read 2 more answers