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user100 [1]
4 years ago
13

Consider the expression –3(y – 5)2 – 9 + 7y.

Mathematics
2 answers:
a_sh-v [17]4 years ago
6 0

Answer:

B and E

Step-by-step explanation:

kolbaska11 [484]4 years ago
3 0

Answer: Option 'B' and 'E' are correct.

Step-by-step explanation:

Since we have given that

-3(y-y)^2-9+7y

Simplification needs a few steps:

-3(y-5)^2-9+7y\\=-3(y^2+25-10y)-9+7y\\=-3y^2-75+30y-9+7y\\=-3y^2+37y-84

So, Option 'B' and 'E' are correct.

As Option 'B' says there are 3 terms in the simplified product, which is true.

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Which decimal equals the fraction 3/8?
Kaylis [27]

Answer:

0.375

Step-by-step explanation:

3 divided by 8 is 0.375

6 0
3 years ago
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Hey can you please help me posted picture of question :)
jek_recluse [69]
The sum of a and b will be the coefficient of the x term of the trinomial. This can be seen below.

(x + a)(x + b)
= x² + bx + ax + ab
= x² + (a+b)x + ab

x is being multiplied by both a and b individually and the products are being added, so sum of a and b appears as the coefficient of x term.

Thus the answer to this question is option C
5 0
4 years ago
Solve using algebraic equation: <br> 5sin2x=3cosx<br><br> (No exponents)
DaniilM [7]
5\sin2x=3\cos x\iff10\sin x\cos x=3\cos x

by the double angle identity for sine. Move everything to one side and factor out the cosine term.

10\sin x\cos x=3\cos x\iff10\sin x\cos x-3\cos x=\cos x(10\sin x-3)=0

Now the zero product property tells us that there are two cases where this is true,

\begin{cases}\cos x=0\\10\sin x-3=0\end{cases}

In the first equation, cosine becomes zero whenever its argument is an odd integer multiple of \dfrac\pi2, so x=\dfrac{(2n+1)\pi}2 where n[/tex ]is any integer.\\Meanwhile,\\[tex]10\sin x-3=0\implies\sin x=\dfrac3{10}

which occurs twice in the interval [0,2\pi) for x=\arcsin\dfrac3{10} and x=\pi-\arcsin\dfrac3{10}. More generally, if you think of x as a point on the unit circle, this occurs whenever x also completes a full revolution about the origin. This means for any integer n, the general solution in this case would be x=\arcsin\dfrac3{10}+2n\pi and x=\pi-\arcsin\dfrac3{10}+2n\pi.
6 0
3 years ago
PLZ HELP ME WITH THIS, IT COMES WITH AN EXAMPLE AND A QUESTION!?!!?
Nonamiya [84]

Answer:

-6(-8.5) = 51

Step-by-step explanation:

-8 1/2 is also -8.5

-6(-8.5) = 51

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3 years ago
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irina [24]
For 23# the answer is $5.96 because you have to divide 17.84 divided by 3.

For 24# the answer is $18.50 because you multiply 0.36 and 50.

5 0
3 years ago
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