All categories

4 years ago

Simplify the mathematical expression.

Mathematics

1 answer:

Alika [10]4 years ago

4 0

The answer would be 2 because you can reduce -5 1/2 to -11/2 and then when you multiply that by 4, you get -22. On the bottom, you can reduce -9 3/5 to -48/5. When you add -48/5 to -1.4 you get -11. Now your solved fraction would -22/-11 and -22 divided by -11 equals positive 2.

You might be interested in

The length of a rectangle is (x+22. The width of the rectangle is (x^2+1). Which expression represents the perimeter of the rect

STALIN [3.7K]

Answer:

Um I think its, To find the width, multiply the length that you have been given by 2, and subtract the result from the perimeter. You now have the total length for the remaining 2 sides. This number divided by 2 is the width.

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Area of figure? Geometry help???

Serga [27]

$A = \dfrac{n}{360^\circ} \times \pi r^2$

$A = \dfrac{172^\circ}{360^\circ} \times 3.14159 \times (4~in.)^2$

$A = \dfrac{172^\circ}{360^\circ} \times 3.14159 \times 16~in.^2$

$A = 24.0~in.^2$

6 0

3 years ago

The base of a circular fence with radius 10 m is given by x = 10 cos(t), y = 10 sin(t). The height of the fence at position (x,

kirill115 [55]

Answer:

6.28 L

Step-by-step explanation:

The length of the circular fence is ...

C = 2πr = 2π(10 m) = 20π m

The height in terms of t is ...

h(t) = 5 +0.05((10cos(t))^2 -(10sin(t))^2) = 5 +5(1 -2sin(t)^2)

For 0 ≤ t ≤ 2π, the average value of this height function is 5.

The fence has an average height of 5 m and a length of 20π m, so an area of ...

(one side) fence area = (5 m)(20π m) = 100π m²

The area of both sides is double this, or ...

total fence area = 2(100π m²) = 2π(100 m²)

Since 1 liter covers 100 m², we need 2π liters to cover the fence.

The amount of paint needed is 6.28 L.

5 0

3 years ago

Need help ASAP with this question please

Assoli18 [71]

Answer:

4th option, 5 5/6

Step-by-step explanation:

8 1/2 - 2 2/3

= 17/2 - 8/3

= (51-16)/6

= 35/6

= 5 5/6

Answered by GAUTHMATH

6 0

3 years ago

Solve the following system by substitution.<br> X+2y=14<br> 6x+3y=21

andrey2020 [161]

Answer:

Step-by-step explanation:

x + 2y = 14 ...............(1)

6x + 3y = 21 ..............(2)

Solve for x in equation 1

When x + 2y = 14

Therefore x = 14 - 2y ...................(3)

Now put equation 3 in equation 2 and solve

6x + 3y = 21 .............(2)

6(14 - 2y) + 3y = 21

Open the bracket and resolve

84 - 12y + 3y = 21

-9y + 84 =21

Now collect the like terms

-9y + 84 = 21

-9y = 21 - 84

-9y = -63

Divide through by -9 to get y

y = -63/-9

y = 7

Substitute for y in equation( 3 )to x

x= 14 - 2y............(3)

So, x = 14 - 2(7)

x = 14 - 14

x = 0.

Therefore x = 0 and y = 7

Check: From equation (1)

x + 2y = 14

Now, put x = 0 and y = -2

Therefore, 0 +2(7) =14

0 +14 = 14

5 0

3 years ago