My question is in the pic

Answers

Answer 1

Answer:
The first thing you need to know is the distance all the way around
the patio. The patio is in the shape of a circle, so the distance around
it is called the "circumference". You need the length of that.

Fortunately, you have a simple formula for the circumference of a circle:

   Circumference = (pi) times (the diameter of the circle) .

The diameter is 24.2 feet.

   Circumference = (pi) times (24.2 feet) = about 76 feet .

Now, all you need to do is figure out how many strings of lights
you need, for them to add up to 76 feet.

Each string of lights is 57 inches long. You need to know how many
times you need 57 inches, to add up to 76 feet.

Well first of all, I hope you can see that you have to divide ... to find out
how many short pieces will make one long piece.

But there's another little wrinkle here: The big distance is in feet,
and the short pieces are in inches, so you can't just go ahead and
divide 76 by 57. I mean, you could, but the answer wouldn't mean
anything. Before you divide, both of your lengths need to be in
the same units, so you need to change one of them. You have
a choice to make: Either change the 76 feet into inches, or else
change the 57 inches into feet. Either way works fine.

There are 12 inches in one foot.

-- 76 feet = (76 x 12) = 912 inches.

(912 inches per patio)
   divided by
   (57 inches per light string) = 16 light strings per patio

or

-- 57 inches = (57/12) = 4.75 feet

(76 feet per patio)
   divided by
   (4.75 feet per light string) = 16 light strings per patio

See ? Either way works fine.

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Why is there no commutative property for subtraction or division? Show examples.

Answers

if you do 17 - 15 the answer will be positive but do the reverse and u get a negitive same for division

Simplify.–1 + 5(6 – y)

A.

–y + 5

B.

–y + 29

C.

–5y + 29

D.

–5y – 31

Answers

The answer is C. This is because you have to expand the brackets
-1+5(6-y)
The -1 remains the same but the bracket changes.
-1+30-5y
This is because the 5*6 is 30 and 5*y is 5y
This can be simplified to
29-5y or -5+29

HURRY PLEASE! i need this asap

Answers

Answer:

$4( \sqrt[3]{6 {x}^(2) } )$

Step-by-step explanation:

The given radical is

$\sqrt[3]{6 {x}^(2) }$

We want to choose from the given options, a like radical to the given expresion.

In general, the given expresion is of the form

$a( \sqrt[3]{6{x}^(2) } )$

where 'a' is a constant.

When a=1, we get the above expression.

When we substitute a=4, we get

$4( \sqrt[3]{6 {x}^(2) } )$

One acre is equal to 4840 square yards. How many square yards, expressed in scientific notation, are there in 450 acres? Please show the work if possible.

Answers

1 acre = 4840 square yards
450 acres = 450 x 4840 yards = 2178000 yards
= 2.178 x 10^6 yards in scientific notation.

Write an equation of the line that passes through the given points:there are four questions:

   1) (0,-1);(6,8)
   2) (3,1);(9,7)
   3) (1,2);(10,14)
   4) (0,0);(-3,5)

Answers

y=ax+b
1) we put this points into general formula
$\left \{ {{-1=a*0+b} \atop {8=6a+b}} \right.\nb=-1\n8=6a-1\n6a=9\na= (3)/(2)$
$y= (3)/(2)x-1$
2)
$\left \{ {{1=3a+b} \atop {7=9a+b}} \right. \n b=1-3a\n7=9a+1-3a\n6a=6\na=1\nb=1-3*1=-2\ny=x-2$
3)
$\left \{ {{2=a+b} \atop {14=10a+b}} \right.\nb=2-a\n14=10a+2-a\n12=9a\na= (4)/(3) \nb=2- (4)/(3)=(2)/(3)\ny=(4)/(3)a+(2)/(3)$
4)
$\left \{ {{0=b} \atop {5=-3a+b}} \right.\n5=-3a\na=- (5)/(3)\ny=-(5)/(3)a$

Giovanna can ride her bike 1.5 mi every 5 min. How many miles can she ride herbike in 24 min?

Answers

7.2

if she can ride 1.5 mi in 5 min then she can ride 0.3 mi each minute, multiply 0.3 times 24 minutes and it gets 7.2 miles