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Dahasolnce [82]

3 years ago

7

Which shape has opposite sides that are parallel and 4 sides that are always the same length? A. parallelogram B. rhombus C. tra

pezoid D. rectangle

1 answer:

maria [59]3 years ago

5 0

Square is the answer you are looking for.

You might be interested in

When x is 2, y is 4, p is 0.5, and m is 2. If x varies directly with the product of p and m and inversely with y, which equation

erastova [34]

I think is xpm/y=0.5

7 0

2 years ago

Element X is a radioactive isotope such that its mass decreases by 26% every day. If an experiment starts out with 810 grams of

ioda

Answer:

The hourly decay rate is of 1.25%, so the hourly rate of change is of -1.25%.

The function to represent the mass of the sample after t days is $A(t) = 810(0.74)^t$

Step-by-step explanation:

Exponential equation of decay:

The exponential equation for the amount of a substance is given by:

$A(t) = A(0)(1-r)^t$

In which A(0) is the initial amount and r is the decay rate, as a decimal.

Hourly rate of change:

Decreases 26% by day. A day has 24 hours. This means that $A(24) = (1-0.26)A(0) = 0.74A(0)$ ; We use this to find r.

$A(t) = A(0)(1-r)^t$

$0.74A(0) = A(0)(1-r)^{24}$

$(1-r)^{24} = 0.74$

$\sqrt[24]{(1-r)^{24}} = \sqrt[24]{0.74}$

$1 - r = (0.74)^{\frac{1}{24}}$

$1 - r = 0.9875$

$r = 1 - 0.9875 = 0.0125$

The hourly decay rate is of 1.25%, so the hourly rate of change is of -1.25%.

Starts out with 810 grams of Element X

This means that $A(0) = 810$

Element X is a radioactive isotope such that its mass decreases by 26% every day.

This means that we use, for this equation, r = 0.26.

The equation is:

$A(t) = A(0)(1-r)^t$

$A(t) = 810(1 - 0.26)^t$

$A(t) = 810(0.74)^t$

The function to represent the mass of the sample after t days is $A(t) = 810(0.74)^t$

5 0

2 years ago

4x-3y=-29, 4x-3y=-30

Nat2105 [25]

Answer:

Is this slope or do you want me to solve x and y

Step-by-step explanation:

4 0

2 years ago

Solve. <br> (2/3) (1/4) =

stellarik [79]

You multiply the numerators (top numbers) and separately multiply the (bottom numbers) denominators.

numerator (top number): 2 * 1 = 2

denominator (bottom number): 3 * 4 = 12

Now, we have 2/12 which can be simplified to 1/6.

<h2>1/6</h2>

6 0

3 years ago

Simplify the following expression as much as possible 4^10 divided by 4^10 . 7^0

nikklg [1K]

Answer:

1

Step-by-step explanation:

<u>Simplify</u>

4^10 divided by 4^10 . 7^0
4^10/(4^10*7^0) =
4^10/4^10 =
1

8 0

2 years ago

Read 2 more answers