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larisa86 [58]
3 years ago
13

If 7x - 11 = 17, then x = 4

Mathematics
1 answer:
lyudmila [28]3 years ago
6 0
It is C. In option C, it tells you that x=4. All you have to do is fill in the blanks.

7 • 4 - 11 = 17
28 - 11 = 17
17 = 17

The statement is true. 17 does equal 17, so the answer is C.
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Step-by-step explanation:

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Find cos θ given that cos 2θ = 5/6 and 0 ≤ θ < π/2. Give an exact answer
trasher [3.6K]
\bf \textit{Double Angle Identities}
\\ \quad \\
sin(2\theta)=2sin(\theta)cos(\theta)
\\ \quad \\
cos(2\theta)=
\begin{cases}
cos^2(\theta)-sin^2(\theta)\\
1-2sin^2(\theta)\\
\boxed{2cos^2(\theta)-1}
\end{cases}
\\ \quad \\
tan(2\theta)=\cfrac{2tan(\theta)}{1-tan^2(\theta)}\\\\
-------------------------------\\\\


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3 0
4 years ago
In a conjunction, / is true when both / and / are _____; otherwise, / is _____. A. true . . . true B. true . . . false C. false
elena-14-01-66 [18.8K]
The answer to this question would be OPTION B.In a conjunction, / is true when both / and / are TRUE; otherwise, / is FALSE.

A conjunction refers to a compound statement, developed by combining two statement often through the use of the word 'AND'.  For example, the two statements, 'Roses are Red' (statement p) .... 'Violets are Blue' (statement q), can be combined to form a conjunction that reads 'Roses are Red and Violets are Blue.'  When it comes to conjunctions, it is or equivalent to the intersection of the two sets of statements (p and q → p ∩ q) which therefore means that in order for the conjunction to be true, both statements must be true, otherwise, the conjunction is false.

Attached below is a truth table that seeks to further explain the point (note: ^ represent the conjunction).

6 0
3 years ago
Read 2 more answers
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Nana76 [90]
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3 0
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s2008m [1.1K]

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Step-by-step explanation:

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4 years ago
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