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3 years ago

A store sells 12 cans of nuts for $27. How much would it cost u to buy 7 cans of nuts

Mathematics

2 answers:

rusak2 [61]3 years ago

7 0

Cross multiply and solve for x

Otrada [13]3 years ago

7 0

This is a proportion, so use cross multiplication.

12 7 12x = 7 x 27
---- = ---- 12x = 189
27 x x = $15.75

Your answer is $15.75.

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Find a1 if Sn = 89,800, r = 3.4, and n = 10. Round to the nearest hundredth if necessary.

xxMikexx [17]

Answer:

$a_1=1.04$

Step-by-step explanation:

We have a geometric sequence with:

$Sn = 89,800$ , $r = 3.4$ , and $n = 10$

Where

Sn is the sum of the sequence

r is the common ratio

$a_1$ is the first term in the sequence

n is the number of terms in the sequence

The formula to calculate the sum of a finite geometric sequence is:

$S_n=\frac{a_1(1-r^n)}{1-r}$

Then:

$89,800=\frac{a_1(1-(3.4)^{10})}{1-3.4}$

Now we solve for $a_1$

$89,800(1-3.4)=a_1(1-(3.4)^{10})$

$a_1=\frac{89,800(1-3.4)}{1-(3.4)^{10}}\\\\a_1=1.04$

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3 years ago

Take 39/50 simplify into a fraction

Nat2105 [25]

Answer:

This fraction is in the simplest form already.

Step-by-step explanation:

This fraction is in the simplest form already. Here is why.

Result in decimals: 0.78

6 0

3 years ago

Mr. Sanchez is grading papers. Yesterday he graded 3 papers in 10 minutes. Today, he graded 2 papers in 8 minutes. What was the

siniylev [52]

Answer:

The difference is 3 papers per hour

Step-by-step explanation:

First, you make turn the 10 minutes to 60 minutes by multiplied by 6 and the same to three and you would get 18 paper per hour. Next, you simplify the 8 minute rate to 1 paper in 4 minutes then multiply the 4 by 15 = 60 minutes then the same to the 1 equal to 15 paper per hour. Finally, you subtract 18 - 15 = 3 paper.

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3 years ago

What does x equal? help pls c:

sweet-ann [11.9K]

Answer:

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3 years ago

Factor out 1/4 out of 1/4x+11/4

cluponka [151]

$\frac{1}{4} x+\frac{11}{4}$