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Mama L [17]
2 years ago
6

The first term of an A.P is 3 and the fifth term is 9.Find the number of terms in the progression if the sum of the progression

is 81.​
Mathematics
1 answer:
julia-pushkina [17]2 years ago
4 0

Answer:

its A becauss i tryed b and th en i tried A so its a

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What is the slope-intercept form of them equation of a line that passes through (5, -4) and has a slope of 3/4?
EastWind [94]

C is correct answer, passes through (5,-1) and also has slope of 3/4



5 0
3 years ago
A tree 20 feet tall has a shadow of 15 feet. How tall is Biff if his<br> shadow is 36 inches tall?
sweet-ann [11.9K]
I Think the answer is 31 because 20-5 is 15 so 36-5 is 31
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Express the extended fraction at the right as a simple fraction in lowest terms.
ValentinkaMS [17]

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5 0
3 years ago
Read 2 more answers
You are making a welding fixture and must cut down a length of copper tubbing from 15 1/8 inches to 8 3/4 inches. If the leftove
fgiga [73]

Answer: 51/8 inches

Step-by-step explanation:

Since you must cut down the length of copper tubbing from 15 1/8 inches to 8 3/4 inches, the leftover piece will be:

15 1/8 - 8 3/4

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121/8 - 35/4

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7 0
3 years ago
Help help help help help
Mkey [24]

Answer:

  x = 42

Step-by-step explanation:

The marked angles are supplementary, so their sum is 180°.

  (2x +8) +(2x +4) = 180

  4x +12 = 180 . . . . . . . . . simplify

  x +3 = 45 . . . . . . . divide by 4 (because we can)

  x = 42 . . . . . . subtract 3

_____

<em>Additional comment</em>

A "two-step" linear equation like this one is usually solved by subtracting the unwanted constant, then dividing by the coefficient of the variable. Here, we have done those steps in reverse order. This makes the numbers smaller and  eliminates the coefficient of the variable. Sometimes I find it easier to solve the equation this way.

5 0
2 years ago
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