All categories

4 years ago

Simplify (4.5)(−9)(−1.8).

Mathematics

1 answer:

kupik [55]4 years ago

3 0

(4.5) (-9) (-1.8), simplified is 72.9

You might be interested in

A brick layer is able to set 2.5 breaks in one minute how many bricks can you set an eight hours

frozen [14]

Answer:

<h2> In 8 hours he will set 1200 bricks</h2>

Step-by-step explanation:

In this problem, we are expected to estimate the number of bricks he can set in 8 hours.

let us convert hours to minutes we have

60 min make 1 hour

x min make 8 hours

cross multiply

x= 60*8

x= 480 min

We are assuming the same rate with which he sets 2.5 brick is the same as the rate with which he will set bricks for the 8 hours windows

so if the bricklayer sets

2.5 bricks in 1min

y bricks in 480 min

Cross multiply we have

y=2.5*480

y= 1200 bricks

hence in 8 hours, he will set 1200 bricks

5 0

3 years ago

I CAN'T FIND THE ANSWER AND I REALLY NEED HELP

kap26 [50]

Answer:

y = 5.5

Step-by-step explanation:

The total distance between the lines j and l is 10.

The total distance between the lines k and l is 9.

To find the distance between the lines j and k we can use the given information.

10 (distance between j and l) - 9 (distance between k and l) = 1 (the distance between the lines j and k).

So the distance between lines j and k is 1.

In the given picture the distance is shown as 2y-10.

This means 2y - 10 = 1

Now we need to solve this equation to find y.

2y - 10 = 1

2y = 1 + 10

2y = 11

y = 11/2

y = 5.5

(NOTE: We are not including 4 in the process of finding the value of y because this particular line is not similar to the line where y is )

3 0

3 years ago

If the given values in a right triangle are cos A =

Vlad1618 [11]

See the picture attached to better understand the problem

we know that
in the right triangle ABC
cos A=AC/AB
cos A=1/3
so
1/3=AC/AB----->AB=3*AC-----> square----> AB²=9*AC²----> equation 1

applying the Pythagoras Theorem
BC²+AC²=AB²-----> 2²+AC²=AB²---> 4+AC²=AB²----> equation 2

substitute equation 1 in equation 2
4+AC²=9*AC²----> 8*AC²=4----> AC²=1/2----> AC=√2/2
so
AB²=9*AC²----> AB²=9*(√2/2)²----> AB=(3√2)/2

the answer is
the hypotenuse is (3√2)/2

5 0

4 years ago

B×7=56 what is the unknown number

schepotkina [342]

8 is te answer > i hope that helpped

4 0

4 years ago

Read 2 more answers

Simplify each polynomial. 6g+8k-9g+2k<br> -4x+6x²+5x<br> a²+5a-3a²<br> 3x²+8x+7x

notsponge [240]

1. 10k-3g
2. 6x squared +x
3. 5a-2a squared
4.3x squared+15x

6 0

3 years ago