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loris [4]
3 years ago
5

Select all figures for which there exists a direction such that all cross sections taken at that direction are congruent.

Mathematics
1 answer:
dimulka [17.4K]3 years ago
4 0

Answer:

  • Rectangular Prism
  • Cube
  • Cylinder

Step-by-step explanation:

I know because I just did it on an assignement and it said these were the right answers.

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Need help pleaseI was bad at math in school so lwant to learn
aleksklad [387]

The probability of an event is expressed as

Pr(\text{event) =}\frac{Total\text{ number of favourable/desired outcome}}{Tota\text{l number of possible outcome}}

Given:

\begin{gathered} \text{Red}\Rightarrow2 \\ \text{Green}\Rightarrow3 \\ \text{Blue}\Rightarrow2 \\ \Rightarrow Total\text{ number of balls = 2+3+2=7 balls} \end{gathered}

The probability of drwing two blue balls one after the other is expressed as

Pr(\text{blue)}\times Pr(blue)

For the first draw:

\begin{gathered} Pr(\text{blue) = }\frac{number\text{ of blue balls}}{total\text{ number of balls}} \\ =\frac{2}{7} \end{gathered}

For the second draw, we have only 1 blue ball left out of a total of 6 balls (since a blue ball with drawn earlier).

Thus,

\begin{gathered} Pr(\text{blue)}=\frac{number\text{ of blue balls left}}{total\text{ number of balls left}} \\ =\frac{1}{6} \end{gathered}

The probability of drawing two blue balls one after the other is evaluted as

\begin{gathered} \frac{1}{6}\times\frac{2}{7} \\ =\frac{1}{21} \end{gathered}

The probablity that none of the balls drawn is blue is evaluted as

\begin{gathered} 1-\frac{1}{21} \\ =\frac{20}{21} \end{gathered}

Hence, the probablity that none of the balls drawn is blue is evaluted as

\frac{20}{21}

8 0
1 year ago
I NEED SOMEONE TO SOLVE THESE FOR ME. I NEED THE WHOLE PROBLEM SOLVED NOT JUST THE ANSWER.
dimaraw [331]

Answer:

1. x=11/4

Step-by-step explanation:

\frac{3}{5} x -  \frac{3}{4}  =  \frac{9}{10}

u should x 20 then u will get

12x - 15 = 18

12x = 18 + 15

12x = 33

x =  \frac{33}{12}

x =  \frac{11}{4}

8 0
3 years ago
Read 2 more answers
5 x (h + 3) for h = 2
olya-2409 [2.1K]

Answer:

25

Step-by-step explanation:

If h=2 it would be 2+3 which equals 5. Then multiply 5 by 5 and get 25.

Hope this helps :)

6 0
3 years ago
Read 2 more answers
Name the image by the number of sides and whether it is concave or convex.
fredd [130]

Answer:

concave pentagon I'm thinking

3 0
3 years ago
Read 2 more answers
The owners of the pet sitting business have set aside $48 to purchase chewy toys for dogs, 2,
Contact [7]

6 chewy toys and 6 cat collars are needed to have the same amount or price at both stores.

<h3>Equation</h3>

An equation is an expression used to show the relationship between two or more angles and variables.

Let x represent the number of dogs and y represent the number of cats collars. Hence:

At Marco's market:

2x + 6y = 48 (1)

At Sonia's superstore:

4x + 4y = 48  (2)

Graphing both equations, the solution is at (6,6)

6 chewy toys and 6 cat collars are needed to have the same amount or price at both stores.

Find out more on Equation at: brainly.com/question/13763238

7 0
2 years ago
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