Which of the following groups of numbers are all prime numbers? A. 2, 5, 15, 19 B. 7, 17, 29, 49 C. 2, 3, 5, 9 D. 3, 11, 23, 31
Answers
The prime numbers from 1 to 50 are: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47.
Group A contains 15, which is a composite number (3 * 5).
Group B contains 49, which is a composite number (7 * 7).
Group C contains 9, which is a composite number (3 * 3).
Group D contains no composite numbers. They are all prime.
Group D contains only prime numbers.
2,3,5,7,11,13,17,19,23,29,31
just try to divide by those and if you an, then it isn't prim
A. 15/3=5 so not prime
B. 49/7=7, not prime
C. 9/3=3 not prime
D. all prime
answe ris D
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At a club meeting, there are 10 more club members than nonmembers. The number of clubmembers at the meeting is c.A ; the total number of people at the club meeting B; 2c-10 what is the answer A; a is high B; b is high C ; Aand B are equal D : no answer
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Answers
Answer:
last option is correct
Step-by-step explanation:
A step that could be used to find the solution is substitution.
We can directly substitute for c in equation F
Since c= 2d + 1 from equation E, we can substitute directly in equation F and we will have 2d + 1 = 3d + 7
b) y>-2/7x+8/7
c) y <7/2x-4
d) y <-2/7x-4/7
(whats a Inequality? )
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Answers
Answer:
$23.75
Step-by-step explanation:
Ok, first, To solve the problem, we need the amount of square feet of each kite.
To calculate area of triangles, you multiply base with height, then divide by two. (bh/2)
Jake's kite is 5.5 feet long, and 6 feet tall, so we plug this into the equation to get: (5.5 · 6)/2
we simplify to get 33/2 = 16.5 square feet.
Then to get the total cost, we multiply 16.5 with 2.50 to get $41.25, which is the cost of Jake's kite.
Now, we do the same with Rob's kite. (3.5*4)/2 = 14/2 = 7, then multiply by 2.5 to get 7 * 2.5 = $17.5, and that's the cost of Rob's kite.
To get the final answer, we subtract 41.25 to 17.5, which is $23.75
Answers
Clara bought 11 chocolate bars. Let x be the number of chocolate bars Clara buys.
The cost of each chocolate bar is 63p, so the total cost of x chocolate bars is 63x pence.
After buying the chocolate bars, Clara has 7p left over.
Now we can write the equation:
Total money spent on chocolate bars + Money left over = Total money Clara has initially
63x + 7 = 700 (Since £7 is equivalent to 700p)
Now, let's solve for x:
63x = 700 - 7
63x = 693
x = 693 / 63
x = 11
To know more about chocolate bars:
#SPJ2
Answer:
11 bars
Step-by-step explanation:
-15m = -4m
-7m - 8 = m - 4
-3m - 8 = 4 - m
m - 4 = -7m - 8
-8 - 7m = -4 + m
-8 - 3m = 4 - m
Answers
-2m-5m-8=3+(-7)+m
-7m-8=-4+m or -7m-8=m-4
the second choice
also this choice
8 - 7m = -4 + m the fifth one
To solve this problem, we must simplify the the equation:
Here is the base equation -2m - 5m - 8 = 3 + (-7) + m (Add all like terms):
#1 -2m - 5m - 8 = 3 + (-7) + m (Property of Addition)
#2 -7m - 8 = -4 + m (Most Simplified Equation)
The answer your would be the 2nd one. -7m - 8 = m - 4