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musickatia [10]
3 years ago
6

3(x+5)+x=7 What is X?

Mathematics
2 answers:
Fittoniya [83]3 years ago
7 0

Answer:

x = -2

Step-by-step explanation:

3(x+5) + x = 7 --> deal with parenthesis

4x + 15 = 7 --> subtract 15 from both sides

4x = -8

x = -2

Makovka662 [10]3 years ago
3 0

Answer:

x = -2

Step-by-step explanation:

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A cyclist travels 4 miles in 15 minutes and then a further 6 miles in 25 minutes without stopping.
Tcecarenko [31]

Total distance traveled = 4 + 6 = 10 miles

Total time = 15 + 25 = 40 minutes

Speed = 10 miles ÷ 40 minutes = 0.25 mph

7 0
3 years ago
Read 2 more answers
Identity the type of sequence 4, -4, 4, -4
AveGali [126]

Answer:

Periodic

Step-by-step explanation:

Because the terms repeat, this is a periodic sequence.

7 0
2 years ago
Suppose you invested $10,000 part at 6% annual interest and the rest at 9% annual interest. If you received $684 in interest aft
victus00 [196]
Assuming simple interest (i.e. no compounding within first year), then
At 6%, interest = 10000*0.06=$600
At 9% interest = 10000*0.09 = $900

Two ways to find the ratio
method A. let x=proportion at 6%
then
600x+900(1-x)=684
Expand and solve
300x=900-684=216
x=216/300=0.72 or 72%
So 10000*0.72=7200 were invested at 6%
10000-7200=2800 were invested at 9%

method B: by proportions
Ratio of investments at 6% and 9%
= 900-684 : 684-600
=216 : 84
= 18 : 7
Amount invested at 6% = 18/(18+7) * 10000 = 0.72*10000 = 7200
Amount invested at 8% = 7/(18+7)*10000=0.28*10000=2800
5 0
3 years ago
latoya is going for a run. she runs at a speed of 6 miles per hour for 9.6 miles. for how many hours does she run?
LenKa [72]
\begin{array}{ccc}6mi&-&1h\\9.6mi&-&xh\end{array}\ \ |cross\ multiply\\\\6x=1\cdot9.6\\\\6x=9.6\ \ \ |divide\ both\ sides\ by\ 6\\\\\boxed{x=1.6\ (h)}
7 0
3 years ago
A cylinder has a base radius of 6ft and a height of 18ft. What is its volume in cubic ft, round to the nearest tenth?
Nookie1986 [14]

Answer:2034.7

Step-by-step explanation:

The equation is pi •r^2•h

R=6

H=18

3 0
3 years ago
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