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3 years ago

What is the approximate area of a circle with a radius of 28 ft?

Mathematics

1 answer:

Flura [38]3 years ago

7 0

The answer is B.163.3.

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Rylan is hiking in Death valley. He starts at an elevation of 250 feet above sea level and hikes to an 2300 above sea level. How

aalyn [17]

Answer:

250+2300=2350

8 0

3 years ago

4.06 Question 9

Jlenok [28]

Answer: B. Graph of 2 lines that intersect at one point. Both lines are solid. One line passes through (-2,2) and (0,3) and is shaded below the line.

y < = 1/2x + 3...(-2,2) y < = 1/2x + 3....(0,3)

2 < = 1/2(-2) + 3 3 < = 1/2(0) + 3

2 < = -1 + 3 3 < = 0 + 3

2 < = 2 (correct) 3 < = 3 (correct)

The other line passes through points (0,1) and (1,-2) and is shaded above the line.

y > = -3x + 1...(0,1) y > = -3x + 1...(1,-2)

1 > = -3(0) + 1 -2 > = -3(1) + 1

1 > = 0 + 1 -2 > = -3 + 1

1 > = 1 (correct) -2 > = -2 (correct)

4 0

2 years ago

Read 2 more answers

See question in attached photo.

statuscvo [17]

9514 1404 393

Answer:

(a, b) = (-2, -1)

Step-by-step explanation:

The transpose of the given matrix is ...

$A^T=\left[\begin{array}{ccc}1&2&a\\2&1&2\\2&-2&b\end{array}\right]$

Then the [3,1] term of the product is ...

$(A\cdot A^T)_{31}=\left[\begin{array}{ccc}a&2&b\end{array}\right]\cdot\left[\begin{array}{ccc}1&2&2\end{array}\right]=a+2b+4$

and the [3,2] term is ...

$(A\cdot A^T)_{32}=\left[\begin{array}{ccc}a&2&b\end{array}\right]\cdot\left[\begin{array}{ccc}2&1&-2\end{array}\right]=2a-2b+2$

Both of these terms in the product matrix are 0. We can solve the system of equations by adding these two terms:

(a +2b +4) +(2a -2b +2) = (0) +(0)

3a +6 = 0

a = -2

Substituting for 'a' in term [3,1] gives ...

-2 +2b +4 = 0

b = -1

The ordered pair (a, b) is (-2, -1).

8 0

3 years ago

Line is parallel to line b and m<7=135. Find m<4

umka21 [38]

I think the answer might be 45

5 0

3 years ago

Alexi’s restaurant bill is $58, and he wants to leave a 20 percent tip. Which expression represents the total amount that Alexi

marshall27 [118]

Answer:

The Answer is A

Step-by-step explanation:

58(0.2) = 11.6 + 58 = 69.6

5 0

2 years ago