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3 years ago

9

A family just removed a big tree from their backyard. The diameter of the circular hole left behind is 7 feet across. Approximat

ely how many square feet of gras
area where the tree once was?

1 answer:

lubasha [3.4K]3 years ago

6 0

Answer:

about 38.48 square feet

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Sum of two digit number is9.When we interchange the digits it is found that the resulting new number becomes twice the other num

ruslelena [56]

Answer:

4 and 5

Step-by-step explanation:

Let the numbers be x and y

If their sum is 9, hence;

x + y = 9 ....1

When reversed

10y+x = 2(10x+y)

10y+x = 20x + 2y

10y - 2y = 20x - x

8y = 19x

y = 10x/8 ...2

Substitute equation 2 into 1;

From 1;

x+y = 9

x +(10x/8) = 9

18x/8 = 9

18x = 72

x = 72/18

x = 4

Since x+y =9

y = 9-x

y =9-4

y = 5

Hence the numbers are 4 and 5

8 0

3 years ago

Simplify. 32 + 5 × 2 − 8 A) −84 B) 8 C) 11 D) 20

navik [9.2K]

32 + 5 × 2 − 8

32+10-8

42-8= 34

The answer should be 34 but I don't see it up there

:/

4 0

3 years ago

Read 2 more answers

Root 8-3 root 32 + 4 root 50

Bess [88]

Answer:

$10\sqrt{2}$

Step-by-step explanation:

$\sqrt{8} -3\sqrt{32} +4\sqrt{50}$

We can try to simplify first.

$2\sqrt{2}-12\sqrt{2} +20\sqrt{2}$

Now we can combine the like terms:

$= 10\sqrt{2}$

hope this helped! :)

3 0

2 years ago

F(x)=18x+11, find f(5)

Natalija [7]

Answer:

$\boxed {\tt f(5)=101}$

Step-by-step explanation:

We are given the function:

$f(x)=18x+11$

and asked to find f(5). Therefore, we must substitute 5 in for each $x$ .

$f(5)=18(5)+11$

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.

Multiply 18 and 5.

$f(5)=90+11$

Add 90 and 11.

$f(5)=101$

f(5) is equal to 101.

5 0

3 years ago

Suppose that 18 inches of wire costs 72 cents.

frozen [14]

Kdtoddtocludlyflyfoyfoydlfylfol

4 0

2 years ago