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goblinko [34]
3 years ago
11

Tan80+tan70/1-tan80tan70

Mathematics
1 answer:
poizon [28]3 years ago
4 0
We have the formula tan(a+b)= (tana+tanb): (1-tana x tanb)
And now we have a=80, b=70 and
(tan80+tan70): (1-tan80 x tan70)= tan(80+70)= tan150
If you write 70 for 70°, we have tan150°=1/√3
Merry Christmas
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Pls help ASAP pls !!!
JulsSmile [24]

Answer:

130

Step-by-step explanation:

The Honda will cost 24480 - 1400 = 23080

The Toyota will cost 25500 - 0.1 * 25500 = 25500 - 2550 = 22950.

So the Toyota will cost 130 less

7 0
2 years ago
During a sale, a bookstore sold 250 books. At the end of the sale, the store has 75% of the original number of books. How many b
shutvik [7]
90 books would be left I believe I just took 250/9 since it would take 9 quarters to make $2.50 and since 75% was gone that would mean 25% is left so your answer is 90 unless it’s not but I believe it’s right.
5 0
3 years ago
Kendra is buying bottled water for a class trip. She has 16 bottles left over from the last trip. She buys bottles from the case
Helen [10]

Answer:

6 cases

Step-by-step explanation:

Kendra wants a total of 160 water bottles

She already has 16 water bottles. So you can subtract 16 from 160 or

160-16 = 144

Then since there are 24 water bottles in a case, you need to divide 144 by 24 or 144÷24 = 6

4 0
2 years ago
1) solve for w: 3w - 10 = 4w + 5<br> 2) solve for t:6 -2t &gt;18
Gre4nikov [31]
Problem # 1
 3w-10=4w+5
(3w-10) + (10-4w) = (4w+5) + (10-4w)
(3w-10) + (-4w+10) = (4w+5) + (-4w +10)
3w-10-4w+10 = 4w +5 -4w +10
3w-4w=15
-w=15
w= -15 (w is negative 15)

problem #2.
6-2t > 18
6-2t-6 > 18-6
-2t > 12 
(-1) (-2t) >  12 (-1)
2t > -12
next divide by 2
2t/2 > -12/2
 t >  -6     (t is greater then negative 6)

 
5 0
3 years ago
Name the property of equality that justifies the following statement. If p = q, then p - r = q - r A) Multiplication Property .
Sonja [21]

Answer:

Option B is correct.

The property of equality that justifies the following statement is; Subtraction property.

Step-by-step explanation:

Subtraction property of equality states that you subtract the same number from both sides of an equation.

i.e, if a=b then, a-c=b -c

Given the statement:

if p =q  

then, by definition of subtraction Property

Subtract r from both sides of an equation we get,

p-r = q -r

Therefore, the property of equality that justifies the following statement is; Subtraction property.

6 0
3 years ago
Read 2 more answers
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