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Sladkaya [172]
3 years ago
10

What is the solution 7tan^3x-21tanx=0

Mathematics
1 answer:
PtichkaEL [24]3 years ago
4 0
The final solution is all the values that make <span><span><span><span>7<span>tan<span>(x)</span></span></span><span>(<span><span>tan2</span><span>(x)</span><span>−3</span></span>)</span></span>=0</span><span><span><span>7<span>tanx</span></span><span><span>tan2</span>x<span>-3</span></span></span>=0</span></span> true
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Enter the sum of numbers as a product of their GCF.
frutty [35]

Their GCF is 6 and the sum is 66

Step-by-step explanation:

8 0
3 years ago
Toby goes on holiday to Geneva, Switzerland. In Geneva, Toby sees a watch costing 193.75 CHF (Swiss Francs). In Manchester, an i
KonstantinChe [14]

Answer:

The watch is cheaper in Geneva, Switzerland by a value of £20

Step-by-step explanation:

To get the city in which the watch is cheaper, what we need to do is to express the price of the watch in the same currency.

Since pounds is also used in the b part of the question, it would be easier working with it.

In Geneva, the price of the watch is 193.75 CHF

from our conversion formula;

£1 = 1.55 CHF

£x = 193.75 CHF

We cross multiply to get the value of x

(193.75 * 1)/1.55

= 193.75/1.55 = £125

We can see that the watch costs less in Geneva and higher in Manchester

By how much is it cheaper?

We can calculate this by subtracting the value in Geneva from the value in Manchester

That would be 145-125 = £20 cheaper

3 0
3 years ago
Which system of linear inequalities is shown in the graph?
victus00 [196]

Answer:

D)

y > x + 4

y ≥ -3x - 2

Step-by-step explanation:

Blue line's boundary is above the line and dotted (>) so the equation: y > x + 4

Red line's boundary is above the line and solid (≥) so the equation: y ≥ -3x - 2

Answer

D)

y > x + 4

y ≥ -3x - 2

7 0
4 years ago
Read 2 more answers
Solve the system algebraiclly 3x -2y -1 = 0 y= 5x +4
Andreyy89
You’re already given what y is so just substitute it in and solve

3x-2(5x+4)-1=0
Distribute
3x-10x-8-1=0
Add like terms
-7x-9=0
Add 9 to both sides
-7x=9
Divide both sides by -7
x=-9/7
3 0
4 years ago
Sonia and sophia are sisters. sonia is 15 years older than sophia. the sum of their ages is 63. how old is sophia?
poizon [28]
Sonia represented by x. Sophia represented by x+15. x+x+15 = 63
2x + 15 =;63
2x = 48
x =;24. Sonia
x+15 = 39. Sophia
6 0
3 years ago
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