All categories

2 years ago

8+ _=11 what is the answer

Mathematics

1 answer:

crimeas [40]2 years ago

5 0

Answer:

The answer is 3

Step-by-step explanation:

B/c 8+2=10 just add one more and 2+1=3

You might be interested in

Three people get into an empty elevator at the first floor of a building that has 10 floors. Each presses the button for their d

Dominik [7]

Answer:

The probability that the buttons for 3 consecutive floors are pressed is $\frac{1}{12}$ or 0.0833

Step-by-step explanation:

Consider the provided information.

They are equally likely to want to go to floors 2 through 10.

That means the number of buttons are 9.

Each presses the button for their desired floor (unless one of the others has already pressed that button).

It means that if two people wants to go at the same floors, then only one person will press the button.

Therefore, the total number of ways are: 9×8×7=504

Three consecutive floors means they have been picked:

2,3,4 or 3,4,5 or 4,5,6 or 5,6,7 or 6,7,8 or 7,8,9 or 8,9,10

We have 3 persons that means we can arrange them in 3! ways.

Therefore, the total number of favorable outcomes for this case is 7×3!=42

$Probability = \frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}}$

$Probability = \frac{42}{504}=\frac{1}{12}$

Hence, the probability that the buttons for 3 consecutive floors are pressed is $\frac{1}{12}$ or 0.0833

4 0

2 years ago

Irene owns a bakery.For each cake,she spends 1/4 of an hour to make frosting and 2/5 hour to decorate.How many cakes can Irene b

aleksandrvk [35]

The answer is 5 cakes.

EXPLANATION

To solve this, you work out that 1/4 of an hour is 15 mins 2/5 of an hour is 24 mins and that 3 1/4 hours is 195 mins.

Using these, we can work out that it takes 39 mins per cake (15 for frosting + 24 for decorating). When we divide 195 by this we get 5, meaning that the answer is 5 cakes.

Hope this helps!

8 0

2 years ago

If A = w + 9 and B = w - 3, find an expression that equals 3A - B in standard form. Please help very urgent!!

Scorpion4ik [409]

Answer:

2w + 30

Step-by-step explanation:

If A = w + 9, B = w - 3

3A - B

3 ( w + 9 ) - ( w - 3 )

= 3w + 27 - w + 3

= 2w + 30

3 0

1 year ago

You will note the wheel has 38 slots. There are two green slots (labeled 0, 00) and 36 slots which alternate red/black and are n

Zarrin [17]

Answer:

P(M) = 0.3158

Step-by-step explanation:

Data given in the question:

Total Slots = 38

Green Slots = 2 labelled (0, 00)

Red Slots = 18

Black Slots = 18

E = Ball lands on an even numbered slot

M = Ball lands in a slot that is numbered a multiple of 3

We are required to find the probability of event M. For that, we need to identify how many multiples of 3 are present on the wheel.

Multiples of 3 between 1-36 = 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36

There are a total of 12 slots numbered with multiples of 3.

P(M) = No. of slots numbered a multiple of 3 / Total no. of slots

= 12/38

P(M) = 0.3158 (rounded to four decimal places).

5 0

2 years ago

A building casts a shadow 25 m long. At the same time, the shadow cast by a 44-cm tall pole is 59 cm long. Find the height of th

EastWind [94]

For this, we are going to be using proportions to solve. But firstly, we have to convert cm to m. For this, I'll be using dimensional analysis:

$\frac{44\ cm}{1}*\frac{0.01\ m}{1\ cm}=\frac{0.44}{1}=0.44\ m$

$\frac{59\ cm}{1}*\frac{0.01\ m}{1\ cm}=\frac{0.59}{1}=0.59\ m$

Now that we have everything in meters, we can put it into proportions. In this case, our proportion is $\frac{x}{25} =\frac{0.44}{0.59}$

Firstly, cross-multiply: $0.59x=11$

Next, divide both sides by 0.59, and your answer will be x = 18.6 m, or D.

3 0

2 years ago