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2 years ago

1. 4x + 5 + 7y + 3x *

Mathematics

2 answers:

dsp732 years ago

6 0

Answer:

7x + 7y + 5

Step-by-step explanation:

(1st put the like terms together like)

Q) 1. 4x + 5 + 7y + 3x *

= 4x + 3x + 7y + 5

= 7x + 7y + 5

(now this is the final answer 7x + 7y + 5)

Hope u understand it and this was the method taught by my teacher.

ddd [48]2 years ago

4 0

Step-by-step explanation:

7y +7x +5 = > answer

hope this will be helpful to you.

plz mark my answer as brainlist plzzzz

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given that a1=5 and a2=15 are the first two terms of a geometric sequence, determine the values of a3 and a10. Show the calculat

Alekssandra [29.7K]

a_3 is 45 and a_10 is 98415

Step-by-step explanation:

Given

a_1 = 5

a_2 = 15

First of all we have to calculate the common ratio of the sequence. The common ratio is the ratio between two consecutive terms of a geometric sequence.

So,

$r=\frac{a_2}{a_1} = \frac{15}{5} = 3$

The explicit formula for geometric sequence is:

$a_n = a_1.r^{n-1}$

Putting the value of r and a_1

$a_n = 5.(3)^{n-1}$

Putting n=3 in the explicit formula

$a_3 =5.3^{3-1}\\= 5 * 3^2\\=5 * 9\\= 45$

Putting n=10 for tenth term

$a_{10} =5.3^{10-1}\\=5*3^9\\=5 * 19683\\=98415$

Hence,

a_3 is 45 and a_10 is 98415

Keywords: Geometric sequence, Explicit formula

Learn more about geometric sequence at:

#LearnwithBrainly

7 0

3 years ago

HELPPPPP MEEEEE I WIIILLLLL GIVVVEEE BBRRRAIINNNNNLLLLIEEESTTTT!!!!! I pay $2.25 per gallon of gasIf I get a drink they take $.5

kondor19780726 [428]

Answer:

$17

Step-by-step explanation:

10 x 2.25 = 22.5

10 x .50 = 5

22.5 -5 = 17

I think this is correct. Sorry if it isn't though!!!!!!

3 0

3 years ago

rock is thrown upward with a velocity of 27 meters per second from the top of a 23 meter high cliff and it misses the cliff on t

ahrayia [7]

the rock will be at 11 meters from the ground level after 5.92 seconds

Step-by-step explanation:

The motion of the rock is a free-fall motion, since the rock is acted upon the force of gravity only. Therefore, it is a uniformly accelerated motion, so its position at time t is given by the equation:

$y=h+ut+\frac{1}{2}at^2$