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AnnyKZ [126]
3 years ago
14

8 students take 18 hours to construct a raft.

Mathematics
1 answer:
miv72 [106K]3 years ago
7 0

Answer:

16

Step-by-step explanation:

Students                      8       x

Time taken (hours)     18     18 - 12 = 6

If number of students increases, the work will completed in less hours.

So inverse proportion

x =\frac{18*8}{6}=3*8 = 24

Additional students required = 24 - 8 = 16

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A farmer ships pears in crates that weigh 4.5 lb each when empty. Each pear weighs 0.25 lb. The total weight of a crate filled w
Ipatiy [6.2K]

Answer:

  one-quarter times the number of pears, plus four and one-half is forty-four and one-half

Step-by-step explanation:

The total weight (44.5 lb) will be the sum of the empty weight (4.5 lb) and the number of pears multiplied by the pear's weight. That can be expressed as ...

  one-quarter times the number of pears, plus four and one-half is forty-four and one-half

4 0
2 years ago
Which is the correct answer when solving the equation using
SashulF [63]

Answer:

We conclude that the correct option is 'A'.

As I was able to get (6, -6) because  I was able to eliminate my y terms first.

Step-by-step explanation:

Given the system of equations

\begin{bmatrix}-4x-2y=-12\\ 4x+8y=-24\end{bmatrix}

solving using the elimination method

4x+8y=-24

+

\underline{-4x-2y=-12}

6y=-36

so

\begin{bmatrix}-4x-2y=-12\\ 6y=-36\end{bmatrix}

solve for y

6y=-36

Divide both sides by 6

\frac{6y}{6}=\frac{-36}{6}

y=-6

\mathrm{For\:}-4x-2y=-12\mathrm{\:plug\:in\:}y=-6

-4x-2\left(-6\right)=-12

-4x+12=-12

-4x=-24

Divide both sides by -4

\frac{-4x}{-4}=\frac{-24}{-4}

x=6

Thus, the solutions are:

x=6,\:y=-6

Therefore, we conclude that the correct option is 'A'.

As I was able to get (6, -6) because  I was able to eliminate my y terms first.

8 0
3 years ago
FIrst to answer gets brainliest no trolls
MissTica

Answer:

Step-by-step explanation:

Division of liked variables

7 0
3 years ago
Read 2 more answers
Write an equation of the form y=kx for the relationship shown in the graph.
jekas [21]

Answer:

28 = 8k

Step-by-step explanation:

(x,y)

so (8,28)

y = kx is a direct proportional formula.

28 = 8k

8 0
3 years ago
100 POINTS!!!
Brums [2.3K]

Answer: x = 4

Step-by-step explanation:

2(x+1)=10

Distributive properties

a*(b+c)=(a*b)+(a*c)

Using distributive properties

Then

2*(x+1)=(2*x)+(2*1)

2*(x+1)=2x+2

Now, commutative properties

a*b=b*a

Addition is cumulative

a+(-b)=(-b)+a

Therefore applying to 2x+2

2x+2+(-2)=2x+(-2)+2

Then, applying to the equation

2x+2+(-2)=10+(-2), +×-=-

2x+2 -2=10-2

2x=8

Using division properties

ax=b

If a is none zero

Then ax/a=b/a

Therefore x=b/a

Applying that to 2x=8

2x=8. Divide both side by 2 which is none zero

2x/2= 8/2

x=4

Option B

Subtraction Property of equality

please click thanks and mark brainliest if you like :)

7 0
3 years ago
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