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3 years ago

Would be nice to if somebody helped me.

Mathematics

1 answer:

Yuri [45]3 years ago

6 0

Answer:

1,456

Step-by-step explanation:

The sum of n terms of a geometric sequence with first term a1 and common ratio r is given by ...

Sn = a1·(r^n -1)/(r -1)

For your series with a1=4, r=3, and n=6, the sum is ...

S6 = 4·(3^6 -1)/(3 -1) = 2·728 = 1,456

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Store K sold 48 pairs of shoes this month of the sale,

sladkih [1.3K]

Step-by-step explanation:

this month-100 percent

then previous month 100-20=80 percent

if 48=100percent

then x=80percent

x=(80×48)/100

x=38.4 ≈ 38 pairs if shoes

8 0

3 years ago

Help me with #5 pleaseeeeeeeeeee

earnstyle [38]

Answer:

$\angle 1 = 45$ degrees

Step-by-step explanation:

Sum of 3 angles in a triangle is 180..

The angles given are:

7x + 12

So we sum to 180 and write:

$60+7x+12+\angle 1=180\\72+7x+\angle 1=180\\7x+\angle 1=108$

Also, straight angle is 180 degrees, thus Angle 1 and (14x + 9) angle is sum to 180, thus we can write:

$14x+9+\angle 1=180\\14x + \angle 1=171$

Or we can write this as:

$14x + \angle 1=171\\\angle 1 = 171 - 14x$

We substitute this expression for Angle 1 into 1st equation we got and solve for x first,

$7x+\angle 1 = 108\\7x+( 171 - 14x)=108\\-7x=-63\\x=9$

Since x = 9, the angle "14x + 9" would be:

14(9) + 9 = 135

Hence Angle 1 would be:

$\angle 1 + 14x + 9 = 180\\\angle 1 + 135 = 180\\\angle 1 = 45$

6 0

3 years ago

Will give brainliest if its correct and more than one person answers

myrzilka [38]

D) a = 24, c = 48, e = 22, i = 80 is the correct answer.

hope this helps!

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3 years ago

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Solve 3[-X + (2 x + 1)] = x - 1.

vlabodo [156]

Answer:

X=-2

Step-by-step explanation:

All steps are shown in the image

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At a high-end restaurant, a meal with a 22% tip costs $179.11. What was the original cost of the meal?

PSYCHO15rus [73]

Answer:

139.71

Step-by-step explanation:

22% of 179.11 is 39.40

179.11 - 39.40 = 139.71

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2 years ago

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Would be nice to if somebody helped me. ​

Would be nice to if somebody helped me.