3 years ago

Solve these equations |x+1/2|= 3 |x-3|=5 6/7 |3x+7|=5

Mathematics

1 answer:

just olya [345]3 years ago

6 0

The First one is: x = 5/2 or x = -7/2

The Second one is: x = 62/7 or x = -20/7

The Third one is: x = -2/3 or x = -4

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Which of the following represents a solution to the equation d3 - 343?

Levart [38]

I don’t see any multiple choice but d3 -343 is factored as (d-7)(d^2+7d+49)

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3 years ago

Maggie took one of her friends out to lunch. The lunches cost $20 and she paid 5% sales tax. If Maggie left a 10% tip on the $20

RUDIKE [14]

Answer:

46$

Step-by-step explanation:

20+20=40, 5% of 40=2, 42, +4, 46. (the 4 comes from the 10%)

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3 years ago

An arithmetic sequence begins as follows: a1=13 a2=19 Which of the following gives the definition of its nth term?

Otrada [13]

Answer:

the nth term of the sequence is $a_n=6n+7$

Step-by-step explanation:

Given : An arithmetic sequence begins as follows: $a_1=13, a_2=19$

To find : Which of the following gives the definition of its nth term?

Solution :

The nth term of the A.P is $a_n=a+(n-1)d$

The first term is $a=a_1=13$

The common difference is $d=a_2-a_1$

$d=19-13=6$

Substitute in the formula,

$a_n=13+(n-1)6$

$a_n=13+6n-6$

$a_n=6n+7$

Therefore, the nth term of the sequence is $a_n=6n+7$

5 0

3 years ago

The perimeter of the scalene triangle is 54.6 cm. Which equation can be used to find the value of b if side a measures 8.7 cm?

77julia77 [94]

A scalene triangle is a triangle that has 3 sides that are all different lengths.

Let these letters represent the problem:

a = 8.7

b = side 2

c = side 3

P = 54.6

To find the perimeter, we just need to add all the sides [ P = a + b + c ]

So, put what we have in the formula above.

54.6 = 8.7 + b + c

Best of Luck!

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3 years ago

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Determine 3rd term in the geometric sequence whose first term is -8 and whose common ratio is 6

Brrunno [24]

-8, -48, -288
or
-8, -4/3, -2/9

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3 years ago

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