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3 years ago

If 40% of a number is 56 what was the original number

1 answer:

7 0

$\begin{array}{ccc}100\%&-&x\\40\%&-56\end{array}\ \ \ |cross\ multiply\\\\40x=56\times100\\40x=5600\ \ \ \ \ |divide\ both\ sides\ by\ 40\\\\\boxed{x=140}$

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On Eduardo's workbench are the following

Maurinko [17]

Answer: 2/5

Step-by-step explanation:

Number of cans of red paint = 3

Number of cans of blue paint = 5

Number of cans of green paint = 8

Number of cans of yellow paint = 4

Total number of cans of paint = 20

The probability that Eduardo will

choose a can of red paint or a can of blue will be:

= P(red) + P(blue)

= 3/20 + 5/20

= 8/20

= 2/5

The probability is 2/5.

8 0

3 years ago

Solve the equation for y <br><img src="https://tex.z-dn.net/?f=8%20%3D%203x%20%2B%206y" id="TexFormula1" title="8 = 3x + 6y" alt

Shalnov [3]

move variable to the left side and change its sign

-3x+8=6y

Move constant to the right side and change its sign

-3x=6y-8

Divide both sides of the equation by -3

x=-2y+8/3

7 0

3 years ago

Read 2 more answers

Help me! ELENA HAS 6 YARDS OF RIBBON IT TAKES 1/4 YARD OF RIBBON TO MAKE A BOW HOW MANY BOWS CAN SHE MAKE WITH THE RIBBON THAT S

astraxan [27]

Answer:

24 bows

Step-by-step explanation:

5 0

3 years ago

1 Select the correct answer. Multiply the binomials: (3x + 4)(5x - 2) A.15x2 + 20x-8b. 15x2 + 14x-8 c. 15x2- 14x-8 D. 15x2+ 14x8

leonid [27]

Multiply the binomials:

(3x + 4)(5x - 2)

$\begin{gathered} =3x(5x\text{ - 2) + 4(5x - 2)} \\ =15x^2\text{ - 6x + 20x - 8} \\ =15x^2\text{ + 14x - 8} \end{gathered}$

Final answer

Option B is the final answer

3 0

1 year ago

The Sognefjord is the deepest fjord in Norway at 1,308 metres (4,291 ft) If a submersible floating on the surface was to dive ve

natali 33 [55]

Answer:

36 minutes

Step-by-step explanation:

Depth of the fjord = 1308 m

Rate at which the submersible dives = 35 meters/minute

Distance to the bottom of the fjord should be 48 m

Distance the submersible has to go underwater is $1308-48=1260\ \text{m}$

Time is found by dividing the distance the submersible has to go underwater by rate at which the submersible dives

$\dfrac{1263}{35}=36\ \text{minutes}$

The time taken by the submersible to dive the required distance is 36 minutes.

6 0

3 years ago