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3 years ago

14

A construction company bought 673.718 kilograms of gravel and 140.91 kilograms of sand. How many kilograms of material did the c

ompany buy in all?

1 answer:

7nadin3 [17]3 years ago

3 0

Answer:

814.628 kg

Step-by-step explanation:

We are finding the total number of kilograms, so we must add it all together.

673.718 + 140.91 = 814.628 kg in all

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find the equation of the straight line passing through the point (0,-1) which is perpendicular to the line y= -3/4 x-3

Rzqust [24]

Answer:

$4x - 3y -3=0$

Step-by-step explanation:

Given equation ,

$\implies y =\dfrac{-3}{4}x - 3$

Compare it to <u>slope </u><u>intercept</u><u> </u>form to find the slope which is $y=mx+c$ , we have ,

$m =\dfrac{-3}{4}$

Now we know that the product of slope of two perpendicular lines is-1 . Hence the slope of the perpendicular line is ,

$m_{perp}= \dfrac{4}{3}$

The given point is (0,-1) , on using <u>Point</u><u> slope</u><u> </u>form of the line we have,

$\implies y-y_1 = m(x - x_1) \\\\\implies y -(-1) = \dfrac{4}{3}(x -0 ) \\\\\implies y + 1 =\dfrac{4}{3}x \\\\\implies \underline{\boxed{\red{ 4x - 3y -3 = 0 }}}$

8 0

3 years ago

Solve for x: 3(x + 1) = -2(x - 1) - 4

shepuryov [24]

Answer:

x = -1

Step-by-step explanation:

3(x+1) = -2(x-1) - 4

3x + 3 = -2x + 2 - 4

3x + 3 = -2x - 2

Add the -2x to both sides

5x + 3 = -2

Subtract the 3 to both sides

5x = -5

Divide both sides by 5

x = -1

4 0

3 years ago

Subtract (6k + 2) - (3k - 2)

Rudiy27

The answer is (3k + 4)

3 0

3 years ago

Read 2 more answers

Two are used to fill the swimming pool.Pipe A alone fill the tank in 4 hours and pipe B fill the tank in 4 hours.If both pipe s

MrMuchimi

Answer:

The pipe A will fill the pool in 2.25 hours and the pipe B will fill the pool in 1.75 hours.

Step-by-step explanation:

Pipe A alone can fill the pool in 4 hours.

So, in 1 hour it fills $\frac{1}{4}$ part of the pool.

and in 30 minutea it fills $\frac{1}{8}$ part of the pool.

If the pipe B is opened after 30 minutes the pipe A opened.

So, $(1-\frac{1}{8} ) =\frac{7}{8}$ part of the pool is filled by both the pipe.

Again, pipe B alone fills the pool in 4 hours.

Hence, if both the pipes are open then they will fill in one hour $(\frac{1}{4} +\frac{1}{4}) =\frac{1}{2}$ part of the pool.

So, the remaining $\frac{7}{8}$ part of the pool will be filled by both the pipe in $\frac{\frac{7}{8} }{\frac{1}{2} } =\frac{7}{4}$ hours i.e. 1.75 hours.

Therefore pipe A will fill the pool in (0.5 + 1.75) =2.25 hours and pipe B will fill the pool in 1.75 hours. (Answer)

6 0

3 years ago

What is the area of the shape?

Nimfa-mama [501]

A = (14)(18) + 1/2(18)(13)
A = 252 + 117
A = 369

answer
369 m^2

8 0

4 years ago