Is each equation true or are some of them false?

2 answers:

8 0

1. False. y x y x y = y^3, not 3y, so it would equal y^3 - y.

2. False. Half of the original amount will never equal the original amount.

3. True. When you divide variables with exponents, you subtract the exponents. Therefore, v^3 / v^2 = v^3-2 = v

Hope this helps!

laila [671]2 years ago

7 0

1 is true 2 is false 3 is true

You might be interested in

6. Suppose that a bike rents for $4 plus $1.50 per hour. Write an equation in slope-intercept form that models this situation. y

mars1129 [50]

The equation is y = 1.50x + 4

The answers for the rest is 2=7 4=10 6=13 8=16

6 0

3 years ago

Can someone please help me with these problems?

anzhelika [568]

17. Subtraction. According to the order of operations, he should've done the exponent of 3 first.

18. He then did 15×2. According to the order of operations, he should've done the multiplication of 8×2, since, if there are only multiplication and/or division left, you work left to right. He isn't correct.

19. 16, I think, I did it in my head.

4 0

3 years ago

Read 2 more answers

Polymer composite materials have gained popularity because they have high strength to weight ratios and are relatively easy and

inn [45]

Complete Question

Polymer composite materials have gained popularity because they have high strength to weight ratios and are relatively easy and inexpensive to manufacture. However, their nondegradable nature has prompted development of environmentally friendly composites using natural materials. An article reported that for a sample of 10 specimens with 2% fiber content, the sample mean tensile strength (MPa) was 51.1 and the sample standard deviation was 1.2. Suppose the true average strength for 0% fibers (pure cellulose) is known to be 48 MPa. Does the data provide compelling evidence for concluding that true average strength for the WSF/cellulose composite exceeds this value? (Use α = 0.05.)

t=8.169

P-value= ?

Answer:

a) $P-value=0$