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4 years ago

Nine times a number is three thousand six hundred what is the number?

2 answers:

6 0

=>Let the number be a ... =>Nine times the number: 9a ... =>Nine time a no. Is 3600 : 9a = 3600... =>9a = 3600 =>a = 3600/9 =>a= 400.. =>So the number is 400.. Hope It helps!!

Inga [223]4 years ago

4 0

The way this should be set up is:

9a = 3600...

So you must divide '9' on both sides, canceling out the '9', and making the 3600 to be '400'..

So the problem should look like: a = 400 <--- (Answer)

Hope it helped.. :)

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In the diagram, the areas of and are in a ratio of 3 : 4. What are the coordinates of point C?

Radda [10]

9514 1404 393

Answer:

D. (4, -6)

Step-by-step explanation:

Since the heights of both triangles are the same (CD), their areas are proportional to their bases. That is ...

AC : CB = 3 : 4

In terms of coordinates, ...

4(C -A) = 3(B -C) . . . . multiply the ratios by 4(CB)

4C -4A = 3B -3C . . . .simplify

7C = 4A +3B . . . . . . . isolate C

C = (4A +3B)/7 . . . . . divide by 7

C = (4(1, -9) +3(8, -2))/7 = (28, -42)/7 . . . . substitute given coordinates

C = (4, -6)

8 0

3 years ago

Solve -x > 8 or -x < 4.

Zinaida [17]

Answer:

-4 < x < -8

Step-by-step explanation:

Given solve -x > 8 or -x < 4.

Solve each inequality first

-x > 8

Divide both sides by -1

-x/-1 > 8/-1

x < -8

Also if -x < 4

Divide both sides by -1

-x/-1 < 4/-1

x > -4

Combine both inequality x < -8 and x > -4

-4 < x < -8

<em>Hence the solution set is -4 < x < -8</em>

4 0

3 years ago

HELP! PLEASE! Jackson is building a small rectangular basketball section in his backyard. The length of the section will be 1.25

Misha Larkins [42]

Answer:

Part A) $A=1.25W^2$

Part B) Length: 17.5 feet and Width: 14 feet

Step-by-step explanation:

Part A) Create an equation to represent the area of the basketball section A, in terms of the width W.

Let

L ----> the length of the rectangular basketball section

W ---> the width of the rectangular basketball section

we know that

The area of the rectangular basketball section is equal to

$A=LW$ ----> equation A

The length of the section will be 1.25 times the width of the section

$L=1.25W$ ----> equation B

substitute equation B in equation A

$A=(1.25W)W\\A=1.25W^2$

Part B) Jackson decides to make the area of the basketball section 245 square feet. What are the dimensions, in feet, of the basketball section?

we have

$A=1.25W^2\\A=245\ ft^2$

$245=1.25W^2$

solve for W

$W^2=245/1.25\\W^2=196\\W=14\ ft$

Find the value of L

substitute the value of W in the equation B

$L=1.25(14)=17.5\ ft$

therefore

The dimensions are :

Length: 17.5 feet

Width: 14 feet

8 0

3 years ago

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lakkis [162]

Answer:

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6 0

3 years ago

Please help!! (no links)

attashe74 [19]

Answer:

3/32

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5 0

3 years ago