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Vera_Pavlovna [14]
3 years ago
6

Martha estimated there were 98 marbles in a jar for a contest. The actual number of marbles in the jar was 120. What was the per

cent error of Martha's estimation?
Mathematics
1 answer:
pishuonlain [190]3 years ago
8 0

Answer:

18.33%

Step-by-step explanation:

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A*4=e b\4=e c+4=e d-4=e A+b+c+d=100
ratelena [41]
I believed you are looking for the value of e. The value of e is 16 below is the solution:

A×4 = E, so A=E/4
B/4 = E, so B=4E
C+4 = E, so C=E=4
D-4 = E, so D=E+4
and
A+B+C+D=100.

Substitute values of A, B, C and D in the equation, we get,
(E/4) + 4E + E-4 + E+4 = 100
(E/4) + 4E + 2E = 100
(E/4) + 6E = 100
(E+24E)/4 = 100
E+24E = 100×4
25E = 400
E = 400/25
<span>E = 16</span>
4 0
3 years ago
Tyler’s height is 57 inches. What could be his height in centimeters?
Mariulka [41]
The answer is C. 144.8
3 0
3 years ago
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Asavings account balance was $135.10 before a withdrawl of $60,a deposit of $22.50,and a withdrawl of $45.What was the after the
SSSSS [86.1K]

Answer:

$52.60

Step-by-step explanation:

Start with 135.10 and subtract the withdrawls (60, 45)

135.10-60-45 = 30.10

Add the deposit 22.50

30.10 + 22.50 = 52.60

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Factor. 4x2 + 10x
Bond [772]
2(4+5x) is the right answer
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4 years ago
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*EXPLAIN YOUR ANSWER*
levacccp [35]
80 is the fixed amount because it is a cost before you get their services. So basically the Y intercept. It is if you pay for an 80$ membership fee and then you are charged per month.
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