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3 years ago

How could we find the diameter of a circle with an area of 78.5 in.^ 2 ?? (3.14 is used for )

Mathematics

1 answer:

iris [78.8K]3 years ago

8 0

Answer:

I think it's A AND C. The diameter is just the radius multiplied by 2 at the end of the day.B is just wrong.

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What is the perimeter of the triangle shown on the coordinate plane, to the nearest tenth of a unit?

Akimi4 [234]

Answer:

25.6 units

Step-by-step explanation: From the figure we can infer that our triangle has vertices A = (-5, 4), B = (1, 4), and C = (3, -4).

First thing we are doing is find the lengths of AB, BC, and AC using the distance formula:

d=\sqrt{(x_2-x_1)^{2} +(y_2-y_1)^{2}}

where

(x_1,y_1) are the coordinates of the first point

(x_2,y_2) are the coordinates of the second point

- For AB:

d=\sqrt{[1-(-5)]^{2}+(4-4)^2}

d=\sqrt{(1+5)^{2}+(0)^2}

d=\sqrt{(6)^{2}}

d=6

- For BC:

d=\sqrt{(3-1)^{2} +(-4-4)^{2}}

d=\sqrt{(2)^{2} +(-8)^{2}}

d=\sqrt{4+64}

d=\sqrt{68}

d=8.24

- For AC:

d=\sqrt{[3-(-5)]^{2} +(-4-4)^{2}}

d=\sqrt{(3+5)^{2} +(-8)^{2}}

d=\sqrt{(8)^{2} +64}

d=\sqrt{64+64}

d=\sqrt{128}

d=11.31

Next, now that we have our lengths, we can add them to find the perimeter of our triangle:

p=AB+BC+AC

p=6+8.24+11.31

p=25.55

p=25.6

We can conclude that the perimeter of the triangle shown in the figure is 25.6 units.

Read more on Brainly.com - brainly.com/question/12560433#readmore

8 0

3 years ago

Evaluate a+b for a =34 and b=-6

Digiron [165]

Question

evaluate a+b for a =34 and b=-6

a + b =

34 + (-6) =

34 - 6 =

5 0

3 years ago

Read 2 more answers

Alejandro has gone to school StartFraction 5 Over 7 EndFraction of the last 35 days. Which expression can be used to determine t

Arte-miy333 [17]

Answer:

Expression B

Step-by-step explanation:

Let us find the information in the question

Alejandro has gon to school $\frac{5}{7}$ of the last 35 days
We need to find the expression that represents the number of days Alejandro has gone to school.

We must write the given information in an expression then look for it in the choices.

∵ He has gone $\frac{5}{7}$ of 35 days

→ "of" means times (×)

∴ The days that he has gon = 35 × $\frac{5}{7}$

The expression that can be used to determine the number of days he has gone to school is 35 × $\frac{5}{7}$

The choices are:

A) $\frac{35}{7}=\frac{5}{7}$

B) 35 × $\frac{5}{7}$

C) $\frac{5}{7}$ ÷ 35

D) $\frac{7}{5}$ ÷ 35

The answer is B

3 0

3 years ago

Read 2 more answers

Bananas cost $2 a bunch and apples cost $0.75 each. If “b” represents the number of bunches of bananas and “a” represents the nu

dangina [55]

Answer: 2b + 0.75a

Step-by-step explanation:

6 0

2 years ago

Which table represents a linear function

lubasha [3.4K]

Answer:

the first one

Step By Step Explanation:

table one increases by 5 every time while table 2 is randomized numbers

6 0

3 years ago

Read 2 more answers