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3 years ago

PLLLLLLLEEEEEEEEEEEEEEASE ANSWER FAST MATH GENIUSES!!!!!!!

Mathematics

2 answers:

pickupchik [31]3 years ago

8 0

Answer:

5 lbs

Step-by-step explanation:

1) x = lbs. of coffee at $7 per lb

2) (7)(x) + (4)(10) = (5)(x + 10)

3) 7x + 40 = 5x + 50

7x - 5x = 50 - 40

2x = 10

x = 5 (lbs. of coffee at $7 per lb.)

alisha [4.7K]3 years ago

6 0

The answer to your problem is 5. Hope this helps

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Ket [755]

The percent error is 4.167 %

Solution:

Given that, Mrs Franklin's speedometer said she was driving at a rate of 48 miles per hour

When checking the accuracy of her speedometer, an Automotive Specialist recorded her speed at 50 miles per hour

The percent error is given by formula:

Percent error is the difference between a measured and known value, divided by the known value, multiplied by 100%

$\text{Percent error } = \frac{\text{experimental-theoretical}}{theoretical} \times 100$

From given,

Experimental value = 50

Theoretical value = 48

Substituting the values in formula, we get,

$Percent\ Error = \frac{50-48}{48} \times 100\\\\Percent\ Error = \frac{2}{48} \times 100\\\\Percent\ Error = 4.167$

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3 years ago

Decide a number by 5 and add 4 to the result

Maru [420]

Answer:

Step-by-step explanation:

10 is a multiple of 5

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4 0

2 years ago

A Geometric series has a first term of 4 and a common ratio of 6. what formula is equivalent to the partial sum of the first n t

IRISSAK [1]

$\bf \qquad \qquad \textit{sum of a finite geometric sequence}
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S_n=\sum\limits_{i=1}^{n}\ a_1\cdot r^{i-1}\implies S_n=a_1\left( \cfrac{1-r^n}{1-r} \right)\quad 
\begin{cases}
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a_1=\textit{first term's value}\\
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r=6
\end{cases}
\\\\\\
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Phantasy [73]

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2 years ago

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Goshia [24]

Answer:

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