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2 years ago

The equation of a straight line is 2y+6x=-8.find the gradient of the line

Mathematics

1 answer:

Illusion [34]2 years ago

7 0

Step-by-step explanation:

Y= mx + c

2y = 3x - 8

2y = -3× - 8 ( divide all yerms by two )

y = -3 × 4

y = -3

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Find the volume of the figure below. Round to the nearest tenth.

anyanavicka [17]

Answer:

3057.6 cm³

Step-by-step explanation:

You have a cylinder and a rectangular prism. Solve for the area of each separately.

Cylinder

The formula for volume of a cylinder is V = πr²h. The radius is 7, and the height is 7.

V = πr²h

V = π(7)²(7)

V = π(49)(7)

V = 343π

V = 1077.57 cm³

Rectangular Prism

The formula for volume of a rectangular prism is V = lwh. The length is 20, the width is 11, and the height is 9.

V = lwh

V = (20)(11)(9)

V = (220)(9)

V = 1980 cm³

Add the areas of the two shapes.

1077.57 cm³ + 1980 cm³ = 3057.57 cm³

Round to the nearest tenth.

3057.57 cm³ ≈ 3057.6 cm³

5 0

3 years ago

How many ways can you get to the end, only being able to go down or left, and having to avoid the green thing?

kirill [66]

I got 21, I give up.

6 0

2 years ago

in the actual room, the distance between the front and back walls is 8 feet. what is the actual length of the front wall, in fee

Bogdan [553]

Answer:

8 feet

Step-by-step explanation:

it actually will be 8 feet

3 0

2 years ago

a car deceased in value by 25% in the first year. purchased for $28,000, what is the car worth today.

Gwar [14]

Try this: Principal times (1+interest rate as a decimal fraction)^(number of yrs)

In this case, Principal = $28,000; interest rate = -0.25; # of years = 1

So Decrease in value = $28,000 (0.75)^1 = $21,000.

4 0

3 years ago

Find the angles of a parallelogram in which an exterior angle is one-third that its interior angle.

iogann1982 [59]

Answer:

The angles of a parallelogram are 135°-45°-135°-45°

Step-by-step explanation:

we know that

In a parallelogram opposites angles are congruent and consecutive angles are supplementary

Remember that

The sum of a exterior angle and its interior angle is equal to 180 degrees

Let

x ----> the measure of one interior angle of parallelogram

y ----> the measure of the other interior angle of parallelogram

we have that

$x+\frac{x}{3}=180^o$

solve for x

$\frac{4}{3}x=180^o\\\\x=(180^o)3/4\\\\x=135^o$

Find the measure of the other interior angle of parallelogram

Remember that consecutive interior angles are supplementary

$x+y=180^o$

substitute the value of x

$135^o+y=180^o$

solve for y

$y=45^o$

therefore

The angles of a parallelogram are 135°-45°-135°-45°

3 0

3 years ago

The equation of a straight line is 2y+6x=-8.find the gradient of the line​

The equation of a straight line is 2y+6x=-8.find the gradient of the line