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3 years ago

Its late and im really trying to catch up in class any help would be appreciated.

Mathematics

1 answer:

Lunna [17]3 years ago

8 0

Answer:

Simplify :-

6. 2

7. (3x^2 -9x - 2)/(x^2 -3x -10)

8. (x +4)^2/(x -4)(x-2)

9. 4x/5(x -5)

10. 2(3x -5)/x^2 -4

11. 2

triangle :-

sin A = 4/5

cos A = 3/5

tan A = 4/3

sin B = 3/5

cos B = 4/5

tan B = 3/4

sin A = 1/3

cos A = (root 2)/3

tan A = 1/(root 2 )

sin B = (root 2)/ 3

cos B = 1/3

tan B = (root 2 )/1

sin A = 1/(root 2)

cos A = 1/(root 2)

tan A = 1

sin B = 1/(root 2)

cos B = 1/(root 2)

tan B = 1

sin A = 5/13

cos A = 12/13

tan A = 5/12

sin B = 12/13

cos B = 5/13

tan B = 12/5

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Anna35 [415]

He would have to mow 14 lawns. To find the answer you would multiply 249.99 by 6%, then add the answer and round and you would get 264.99. 20 x 14 equals $280, so if he mowed 14 lawns and get $20 per lawn, he would buy the Mp3 and still have 15.01 leftover.

Hope this helps!

5 0

4 years ago

Read 2 more answers

The scale on a map is 1 :50000.

mestny [16]

Answer:

The actual area of the field in square kilometers is $30000000 km^2$

Step-by-step explanation:

Scale : 1 cm = 50000 km

Area of field on map = $1.2 cm^2$

Now , 1 cm = 5000 km

$1 cm^2 = (5000 km)^2$

We are supposed to find the actual area of the field in square kilometers.

So, the actual area of the field in sq. km = $1.2 \times (5000)^2$

Actual area of the field in sq. km $=30000000 km^2$

Hence the actual area of the field in square kilometers is $30000000 km^2$

6 0

3 years ago

The snake slithered 2.25 m before resting on a rock. then the snake slithered twice as far as it did before, to catch a rat. whe

s344n2d4d5 [400]

2.25m + 2(2.25m) + 90 cm =
2.25m + 4.50m + 90 cm
6.75m + 90 cm

1 cm = 0.01m...so 90 cm = 90 * 0.01 = 0.9m

6.75m + 0.9m = 7.65m <===

OR..

1m = 100 cm....so 7.65m = 7.65 * 100 = 765 cm <===

4 0

4 years ago

If the coefficient of determination for a data set is 0.75 and the SSE for the data set is 13, what is the SST for the data set?

nadya68 [22]

Answer : SSE = 9
r^2 = 0.75
r^2 = 1 - (SSE/SST)
SSE/SST = 1 - r^2 = 1 - 0.75 = 0.25
SST = 9/0.25 = 36

8 0

4 years ago

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A cylinder has a volume of 675.1 cubic centimeters. The diameter of the cylinder is 10 cm. What is the height of the cylinder? (

WARRIOR [948]

Answer:

8.6 cm

Step-by-step explanation:

V=pi r-squared h

diameter of 10 means radius of 5

675.1=3.14x5x5xh

675.1=78.5h

8.6

5 0

3 years ago