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drek231 [11]
3 years ago
8

a student finished 8 of her homework problems in class If the ratio of problems she finished two problems she still have left wa

s 4 to 1 how many homework problems did she have total​
Mathematics
1 answer:
Eddi Din [679]3 years ago
8 0

Answer:

10 total

Step-by-step explanation:

4:1 = 8:x.  You should see immediately that she has 2 left to do, but if you don't see x, cross multiply and solve.

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Given the sequence in the table below, determine the sigma notation of the sum for term 4 through term 15.
Naya [18.7K]
It's a geometric sequence.

4,-12,36,... \\ \\
a_1=4 \\
r=\frac{a_2}{a_1}=\frac{-12}{4}=-3 \\ \\
a_n=a_1 \times r^{n-1} \\
a_n=4 \times (-3)^{n-1} \\
a_n=4 \times (-3)^{-1} \times (-3)^n \\
a_n=4 \times (-\frac{1}{3}) \times (-3)^n \\
a_n=-\frac{4}{3}(-3)^n

It's the sum for term 4 through term 15.

 \boxed{ \sum\limits_{n=4}^{15} (\frac{4}{3}(-3)^n)}
8 0
3 years ago
Given the function f(x) = 3x + 1 what is f(-2)?
Readme [11.4K]

Answer:

-5

Step-by-step explanation:

f(-2) means that -2 is going to be our input in this function.

To solve this, simply substitute -2 for x in the expression given.

If f(x) = 3x+1, then f(-2) = 3(-2) + 1

3(-2)+1 = -6+1 = -5

Hope this helped!

7 0
2 years ago
Read 2 more answers
Which step in the construction of copying a line segment ensures that the new line segment has
baherus [9]

Answer:

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3 0
2 years ago
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Well I need help please
marissa [1.9K]

 change to improper fractions

 77 1/2 = 145/2

2  1/4  = 9/4

divide

145/2 divide 9/4

copy dot flip

145/2 * 4/9

580/18

290/9

32  2/9

it will fit into 32 bags with 2/9 left over

We have 32 full bags * 2.25 = $72.00



8 0
3 years ago
Solve the following problem, using mixed number format.<br><br> 2 and 1/2 + 1 and 1/16 =
77julia77 [94]

Step-by-step explanation:

2 1/2 + 1 1/16

Adding whole number parts and fraction parts together,

(2+1) + (1/2 + 1/16)

= 3 + (1*8/2*8 + 1/16)

= 3 + (8/16 + 1/16)

= 3 + 9/16

= 3 and 9/16

6 0
3 years ago
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