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3 years ago

Please help with numbers 5, 6, 7, and 8 (Will give brainliest)

Mathematics

1 answer:

Harrizon [31]3 years ago

4 0

Answer:

If AB = BC, then BC = AB
Symmetric property of equality

∠A = ∠A
Reflexive property of equality

If 2x - 5 + 3x = 10 ⇒ add up 2x and 3x ⇒ then 5x - 5 = 10
Associative property of addition

If B is the midpoint of AC, then AB = BC
Definition of midpoint

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The length and width of a rectangular room are measured to be 3.955±0.005m. Calculate the area of the room and its uncertainty i

Margarita [4]

Answer:

The area of the room and its uncertainty in square meters is:

15.642±0.040 $m^2$

Step-by-step explanation:

We know the area of a rectangular room is the multiplication of the length and width:

$Area= 3.955m*3.955m\\Area= 15.642 m^2$

Now we need to know the uncertainty, the uncertainty of a multiplication is:

$\frac{δ_a}{|Area|} =\frac{δ_L}{|L|}+\frac{δ_W}{|W|}$ (1)

$δ_A$ : Area uncertainty

$δ_L$ : Length uncertainty

$δ_W$ : Width uncertainty

A: Area of the room

L: Length

W: Width

Clearing the uncertainty of the area:

$δ_A=(\frac{δ_x}{|x|}+\frac{δ_y}{|y|})*Area$ (2)

$δ_A=(\frac{0.005}{|3.955|}+\frac{0.005}{|3.955|})*15.642 m^2$

$δ_A= 0.040 m^2$

The area of the room and its uncertainty in square meters is:

15.642±0.040 $m^2$

6 0

3 years ago

An elevator can hold a maximum of 1,500 pounds. Eight people need to use the elevator. Bill had some measures from the data set

alexdok [17]

Answer:

The median, mode, and interquartile range have nothing to do with the total weight.The total weight is the mean, multiplied by the number of people.

Step-by-step explanation:

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3 years ago

Six and one-third less a number

aleksley [76]

Answer:

6 1/3 - x

Step-by-step explanation:

The x represents the unknown number

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The circumference of a circle can be found using the c = 2πr. use the formula to solve for the radius of a circle, r

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Soloha48 [4]

Make an Estimate!

150+300+275=?

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