12 workers
can do a piece of work in 20 days, how many worker should
be added to complete the work in 16 days? [Ans: 3]


If you help me to do this question I will make brainliest​

Answer:

16

Step-by-step explanation:

x + 3= 9

x = 6

2x + 4= 2*6 + 4

2x + 4 = 12 + 4

2x + 4 =16

Charlies 16

hope it helps

Answer: he is 16

Step-by-step explanation:

Let x = Frank's age

2x+4+ = Charlie's age

x+3+ = Bob's age

9 = Bob's age

x+3=9

x=6

2x+4=2⋅6+4

2x+4=12+4

2x+4=16

Charlie is 16

Answer:

0.1057

Step-by-step explanation:

We solve the above question using z score formula

z = (x-μ)/σ, where

x is the raw score = 32 oz

μ is the population mean = 33 oz

σ is the population standard deviation = 0.8oz

For x < 32 oz

z = 32 - 33/0.8

z = -1.25

Probability value from Z-Table:

P(x<32) = 0.10565

Approximately = 0.1057

Therefore, the proportion of packets that are underweight (i.e. Weight less than 32 oz.) are 0.1057.

Answer:

7.5

Step-by-step explanation:

If the question is asking for half of the hour, just divide 15/2.

Answer:

where each row and column sum up to 20

2    4    6    8  

4    2    6    8

6    6    4    4

8    8    4    0

Step-by-step explanation:

The sum of twenty using numbers 0 - 9

where each row and column sum up to 20

2    4    6    8  

4    2    6    8

6    6    4    4

8    8    4    0

when you sum up each of the row or each of the column the sum = 20

given that the diagonals are not included the sum of diagonals > or <  20

Answer:

[tex]\implies y = \dfrac{1}{2}x + 1 [/tex]

Step-by-step explanation:

Given :-

And we need to find out the equation of the line passing through the given two points .So here we can use the two point form of the line as ,

[tex]\implies (y - y_1) = \dfrac{y_2-y_1}{x_2-x_1}(x-x_1) [/tex]

Let us take that ,

Now substitute the respective values ,

[tex]\implies (y -3) =\dfrac{3+1}{4+4}(x-4) \\\\\implies y - 3 =\dfrac{4}{8}(x-4) \\\\\implies y -3=\dfrac{1}{2}(x-4) \\\\\implies y -3=\dfrac{1}{2}x - 2 \\\\\implies y = \dfrac{1}{2}x +3-2\\\\\implies y = \dfrac{1}{2}x + 1 [/tex]

Hence the correct option is (2) .

Answer:

322 /738 ; 0.436

Step-by-step explanation:

__________________ M____ F__

Eat oysters ________ 205 __ 113

Does not eat oysters _ 98 __ 322

Probability of choosing a female and does not eat oysters :

Number of (F n Does not eat oyster) = 322 (from table)

Total number of sample : (205+98+113+322) = 738

Hence,

Probability of choosing a female and does not eat oysters ;

Number of (F n Does not eat oyster) = 322 (from table) / total number of samples

= 322 / 738

= 0.436

Answer:

Division Property: divide both sides by 2

Step-by-step explanation:

[tex]2x = 10[/tex]

[tex]x = 5[/tex]

Answer:

260m

$73.2

Step-by-step explanation:

For what amount of driving do the plans cost the same?  

 What the cost when the two plans cost the same?

first plan = 42 + 0.12m

second plan = 55 + 0.07m

42 + 0.12m  =  55 + 0.07m

collect like terms

55 - 42 = 0.12 - 0.07m

13 = 0.05m

m = 260

42 + 0.12(260) = 73.2

Answer:

2/3

Step-by-step explanation:

7/12+1/12=8/12

8  / 4     2

12 / 4     3

Final answer 2/3

Answer:

b

Step-by-step explanation:

Answer:

[tex]\text{b. }\sin \theta =\frac{3}{5}[/tex]

Step-by-step explanation:

In a right triangle only, the tangent of an angle is equal to its opposite side divided by its adjacent side. If [tex]\tan \theta =\frac{3}{4}[/tex] as given in the problem, then the opposite side of angle theta is 3 and its adjacent side is 4. Thus, the hypotenuse of the triangle must be [tex]h=\sqrt{4^2+3^2}=\sqrt{25}=5[/tex].

The sine of an angle in a right triangle is equal to its opposite side divided by its hypotenuse. Therefore, [tex]\sin \theta =\frac{3}{5}[/tex] (o/h).

Answer: the first one :-)

Step-by-step explanation:

Answer: A,

Step-by-step explanation:

they aren’t talking about one day, so that excludes b anc c, and they aren’t talking about predicting weather, so it’s not d, and has to be A

Answer:

Step-by-step explanation:

add all the numbers together to get your answer and divide it by two.

Answer:

Hello! answer: 12

Step-by-step explanation:

Assuming this is the Pythagorean theorem we would usually solve for c but c is already found so we have to work backwards so... 15 × 15 = 225

9 × 9 = 81 225 - 81 = 144 √144 = 12 therefore 12 is the answer Hope that helps!

Answer:

20

Step-by-step explanation:

Answer:

I am not sure if I am right, but in my opinion, it is a valid sample, since they are participating and getting paid, so I would personally go for the third option, but the decision is on you.

Answer: 30%

Step-by-step explanation:

First find the difference between the old score and the new:

= 390 - 300

= 90 points

To find the percentage increase, divide the difference by the original score:

= 90 / 300

= 30%

Answer:

3 x 5 + 5 x 3 would be equal to 30  

Step-by-step explanation:

Answer:

-0.8, -8/10

Step-by-step explanation:

I don't know in letter b.

#CaRRyOnLeArniNG

Answer:

1/12

Step-by-step explanation:

It is given that :

Amount of cereal left = 1/3 of a box

Number of people amongst whom the box of cereal is to be divided equally = 4

Therefore, an equation representing this problem is :

[tex]$\frac{1/3}{4} = x$[/tex]

where x = is the amount of the share each brother gets.

Therefore solving the equation, we get :

[tex]$\frac{1/3}{4} = x$[/tex]

[tex]$\frac{1}{3} \times \frac{1}{4} = x$[/tex]

[tex]$\frac{1}{12}=x$[/tex]

So, each brother got 1/12th of the cereal left.

Answer:

B

Step-by-step explanation:

Step-by-step explanation:

The answer to this question is D.

Answer:

336

Step-by-step explanation:

120*3 is 360.

360= 24 + ___

360-24 is 336

Answer:

432

Step-by-step explanation:

24+__=120

      144*3

        =432

Hope This Helps, Have a great day!

Answer:

B. (2x + 10)(2x + 9)

Step-by-step explanation:

Length (L) of the garden and walkway = x + 10 + x = (2x + 10) ft

Width (W) of the garden and walkway = x + 9 + x = (2x + 9)

Area of the garden and walkway = area of rectangle = L*W

= (2x + 10)(2x + 9)

The polynomial representing the total area of the garden and walkway = (2x + 10)(2x + 9)

Answer:

7pi/6

Step-by-step explanation:

30 degreees = pi/6

180 degrees = pi, or 6pi/6

180 + 30 = 7pi/6

Answer:

36 m 32 s

Step-by-step explanation:

67 /110 = 0.609 hour

0.609 × 60 minutes = 36.54 minutes

36 minutes + 0.54×60 second

= 36 minutes 32 seconds

Answer:

36 mins 32 secs

Step-by-step explanation:

Answer:

83 ounces

Step-by-step explanation:

2 lb 11 oz + 2 lb 8 oz = 4lb 19oz

REMEMBER: 1 pound = 16 oz

4 lb x 16 = 64 oz

64 oz + 19 oz = 83 oz

AB²=AC²+BC² <=> AB²=10²+24²=100+576=676 <=> AB=√676=26 => x=26