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mash [69]
2 years ago
5

Cos2a=cos2a-sin2a for all values of a. true or false​

Mathematics
2 answers:
zzz [600]2 years ago
8 0

\huge {\star }\: Answer

The above equation is applicable for each and every value of a,

So, Correct option is A. True

_____________________________

\mathrm{ \#TeeNForeveR}

never [62]2 years ago
8 0
As stated above the answer is A. True
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Solve 5w^2+25=115, Where w is a real number.
MArishka [77]

Answer:

w=+/-4.24 or whatever could be either since its squared

Step-by-step explanation:

subtract 25 so 5x^2=90. divide by 5 so w^2=18 then square root to get rid of the ^2 so w=+/-4.24

4 0
2 years ago
Please help quickly :D
CaHeK987 [17]

Hope this help!!!

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6 0
2 years ago
The wading pool shown is a trapezoidal prism with a total volume of 286 cubic feet. What is the missing dimension? First base: 8
harkovskaia [24]
To find the missing dimension you will use the formula for finding the volume of a prism and solve for the missing dimension.  In this case 2ft is how deep the pool is and you will solve for the width of the pool.

V = Bh, where B is the area of the base.  In this case, use the area of a trapezoid formula.

286 = 1/2h(8 +13)2
<u>286</u> = <u>21h</u>
21      21
h = 13.6

The width of the wading pool is approximately 13.6 feet.
5 0
3 years ago
(15/8+2/5)+(-7/8) show ur work
stepan [7]
The answer is 7/5 th. You can add fractions without first having a common denominator so you would change the 8's by multiplying it by 5 to get 40 and you would multiply the 5 by 8 to get 40 as well. And the rule whatever you do to the bottom you have to do to the top so whatever you multiplied 8 by do the same for the numerator and whatever you multiplied 5 by you do the same for the numerator. So your new equation would be (75/40+16/40)+(-35/40). you would then add the numerator's across to get 56 and the denominator would stay the same so the answer is 56/40. But you have to now simplify 56/40 down to 14/10 and then once more to 7/5 which is the final answer.
6 0
3 years ago
Factor the mn+5m-3n-15
neonofarm [45]
The factor of mn+5m-3n-15 is 6m-4n-15.
3 0
3 years ago
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