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3 years ago

I do not have one idea on how to do this, honestly i need help badly.

2 answers:

5 0

So hmm let's say

t = number of movie tickets purchased
m = number of meals bought

so... he earns 0.5 for each ticket... so if he bought "t" tickets, he then earned 0.5*t or 0.5t , whatever that is

and if he bought "m" meals, since each one is $2 earnings, then he earned 2 * m or 2m, whatever that is

is just so happen, we know, for last month he earned on his rebates $25
thus

0.5t + 2m = 25

it just so happen we also know he bought 22 movie tickets last month
thus

$\bf 0.5(22) + 2m = 25\implies 11+2m=25\implies 2m=25-11
\\\\\\
2m=14\implies m=\cfrac{14}{2}\implies \boxed{m=7}$

RUDIKE [14]3 years ago

3 0

It would be 0.5x + 2y = 22

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3 years ago

what is the sum of a 7-term geometric series if the first term is negative 11 the last turn is -45056 and the common ratio is -4

patriot [66]

For a geometric sequence with common ratio $r$ , we have

$a_n=a_{n-1}r$

that is, the $n$ -th term in the sequence is the product of the previous term and the common ratio $r$ . So

$a_n=a_{n-1}r=a_{n-2}r^2=\cdots=a_1r^{n-1}$

Then the sum of the first 7 terms is

$S_7=\displaystyle\sum_{n=1}^7a_n=a_1+a_2+\cdots+a_7$
$\implies S_7=a_1+a_1r+\cdots+a_1r^6$

Notice that

$S_7r=a_1r+a_1r^2+\cdots+a_1r^7$

so we can subtract this modified sum from $S_7$ to get

$S_7-S_7r=S_7(1-r)=a_1-a_1r^7\implies S_7=a_1\dfrac{1-r^7}{1-r}$

We're told that $a_1=-11$ and $r=-4$ , so the sum of the first 7 terms is

$S_7=(-11)\dfrac{1-(-4)^7}{1-(-4)}=144,188$

3 0

3 years ago

What is the area? 2 yd 8 yd 5 yd

MrRissso [65]

Answer:

Step-by-step explanation:

I assume the polygon is a trapezoid with parallel bases of 2 yd and 5 yd, and an altitude of 8 yd.

area of trapezoid = (base1 + base2)h/2

area = (2 yd + 5 yd)(8 yd)/2

area = 28 yd²

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2 years ago

Find the area of the triangle

maks197457 [2]

Answer:

12 yd^2 (c)

Step-by-step explanation:

A=1/2bh

= 1/2 x 8 x 3

=12 yd^2

Hope it helps!!!

4 0

1 year ago

Read 2 more answers

please help :) Which number is greater than 3.14159 × 10 to the 4 power? A. 5,678,889 B. 9.897752 x 10 to the 6 power C. 71,224,

BARSIC [14]

Answer: C. 71,224,900

Based on the power, move the decimal point that many spaces to the right. (e.g., If it's 7.9 × 10^3, then move the decimal three spaces to the right, and you'd get 7900.)

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9.897752 × 10^6 = 9897752

2.468 × 10^7 = 24680000

Out of all the numbers mentioned in the question, 71,224,900 is the only one that's greater than 3.14159 × 10^7 = 31415900.

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3 years ago