Maria has a collection of 64 seashells consisting of three types bivalves,gastropods,and cephalopods.1/4 of her collection are bivalves and 3/8 of her collection are gastropods. How many of her seashells are cephalopods
Answers
Answer: the number of cephalopods in her seashells collection is 26.
Step-by-step explanation:
Maria has a collection of 64 seashells consisting of three types bivalves,gastropods,and cephalopods. If 1/4 of her collection are bivalves, it means that the number of bivalves that she has is
1/4 × 64 = 14
If 3/8 of her collection are gastropods, it means that the number of gastropods in her collection is
3/8 × 64 = 24
Therefore, the number of cephalopods in her seashells collection is
64 - (14 + 24) = 26
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0.00000000005
show how you got your answer
Answers
0.00000000005
= 5 ×
Count the Digits after decimal.
We use minus (-) in power as the digit is in left side of decimal
If they are in right side then we use (+) plus sign in power.
x-y=3
x-y=7
Answers
x-3=x-7 -then you would subtract x from any side and do that to the other side. You get -3=-7 which isn't correct so you would get a "no solution" problem.
One solution?
two solutions?
no real solution?
cannot be determined
Answers
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Explanation:
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Given: -7x² − 11x − 2 = 0 ;
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We see that it is in "quadratic format" ; that is:
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" ax² + bx + c = 0 ; a ≠ 0 ; "
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Multiply the entire equation by "-1" ; to get rid of the "negative number" :
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→ -1 * {-7x² − 11x − 2 = 0} ;
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to get: → 7x² + 11x + 2 = 0 ;
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This expression is written in the "quadratic format";
ax² + bx + c = 0 ; in which: a = 7 ; b = 11; c = 2 ;
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The expression cannot be "factored"; so, we can solve for "x" ; by using the "quadratic equation formula" ;
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x = {-b ± √(b² − 4ac)} / {2a} ;
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Let us solve for: "(2a)" : 2a = 2 * a = 2 * 7 = 14 ;
Let us solve for: "(b² − 4ac)": 11² − 4*7*2 = 121 − 56 = 65;
→ √(b² − 4ac) = √65
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→ " -b" = -11 ;
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So, x = (-11 ± √65) / 14 ;
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There are TWO (2) solutions:
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Solution 1) x = (-11 + √65) / 14 = - 0.2098387322643893071; AND:
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Solution 2) x = (-11 − √65) / 14 = -1.3615898391641821214 ;
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So, there are TWO (2) real solutions.
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Anita receives........
Claire receives........
Answers
So for Amanda 0.60×8=4.80; for Anita 0.60×5=3.00 and for Claire 0.60×2=1.20
Amanda gets £4.80; Anita gets £3.00 and Claire gets £1.20.
To check your answer you add the money that was given to each individual together and if it equals the initial £9.00, then your answer is correct, you can also check this by seeing who has the most money, the person with the highest number should have the highest amount of money.
Amanda receives 9*(8/(8+5+2)) = 9*8/15 = £4.8
Anita receives 9*(5/(8+5+2)) = 9*5/15 = £3
Claire receives 9*(2/(8+5+2)) = 9*2/15 = £1.2
Answers
Answer:
x = - 1
Step-by-step explanation:
= 2x + 1 ( multiply both sides by 5 to clear the fraction )
4x - 1 = 5(2x + 1) ← distribute parenthesis
4x - 1 = 10x + 5 ( subtract 10x from both sides )
- 6x - 1 = 5 ( add 1 to both sides )
- 6x = 6 ( divide both sides by - 6 )
x = - 1
4x-1=10x+5
2) take 4x to right side n 5 to left
-5-1=10x-4x
-6=6x
x=-1