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marshall27 [118]
3 years ago
7

If a box of clothes weighing 10 lbs (4.5 kg) and a box of books weighing 10 lbs (4.5 kg) were placed on a scale, what is most li

kely to occur?
Mathematics
2 answers:
galina1969 [7]3 years ago
8 0

Answer:

9 kg

Step-by-step explanation:

Given that if a box of clothes weighing 10 lbs (4.5 kg) and a box of books weighing 10lbs.

It is most likely to balance if they are placed on different scales.

If it is placed on the same scale it will show 9 kg.

Hence answer is 9 kg.

sveta [45]3 years ago
7 0
The scale will read 8 kgs
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In which direction does the graph of the function shown below open?
sp2606 [1]

Answer:

D. Up

Step-by-step explanation:

When a parabola has the form  y=ax^2+bx+c , It is vertical (opens up or down).

Because the variable "x" is squared.

If  "a" is positive, then the parabola opens up, but if it is negative, then the parabola opens down.

In this case you have the quadratic function:

f(x) = 2x^2+5x-4

Which can be rewritten as:

 y = 2x^2+5x-4

Therefore, it is vertical, because it has the form:  y=ax^2+bx+c

You can observe that the value of "a" is:

a=2

Then, since "a" is positive, the parabola opens up.

5 0
3 years ago
8x+3y= 28 and 7x-3y=2<br>solve for x and y simontaniasly using elimination ​
EleoNora [17]

Answer:

x=2, y=4

Step-by-step explanation:

When using elimination, the objective is to elimate one variable. In this case, we see that "y" can easily be eliminated by adding the two equations together since you will get 3y + (-3y) which will eliminate y because the value would become 0, letting us solve for x.

\left \{ {{8x+3y=28} \atop {7x-3y=2}} \right. +\\

Then we get

15x =30, because the y's will eliminated, and 8x+7x is 15x, and 28+2 is 30.

Then divide by 15 on both sides and you get x=2

If x=2, then we can substitute that value into any of the previous given equations and find the value of y.

8×2 +3y = 28

16+3y=28

3y=12

y=4

So the answer to your system of equations would be x=2, and y=4

You can substitute the answers we found to see that they satisfy the equation.

Hope this helped.

6 0
3 years ago
Idk how to do this 4x+y=1
ivolga24 [154]
4x+y=1
4x+y-1=1-1
4x+y-1=0
6 0
3 years ago
(2.0 x 104)(3.02 x 109) simplified form​
kykrilka [37]

Answer:

68469.44

Multiplication is commutative so can be multiplied anyway

(2.0× 109)(3.02×104)

2.0 can be written as ( 20÷ 10) and 3.02 can be written as (302÷ 100)

(2× 109){(3.02÷ 100)× 104]

(218)(7852÷ 25)

68469.44

5 0
3 years ago
Express 68.3 as a mixed number?
iragen [17]
683/100 would be the correct answer In mixed fraction
5 0
3 years ago
Read 2 more answers
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