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BaLLatris [955]
3 years ago
13

Cos(2x)cos(x)+sin(2x)sin(x)=1

Mathematics
1 answer:
Finger [1]3 years ago
5 0

Answer:

=cos(x) use basic properties of sosine (addition and subtraction) cos(a-b)=cos(a)cos(b)+sin(a)sin(b)

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The little Mexican restaurant sells only two kinds of beef burritos mucho beef sandwich Lucho beef last week the restaurant orde
Finger [1]

Answer:

Cost of a single Mucho beef burrito: \$5.5

Cost of a double Mucho beef burrito: \$6.5

Step-by-step explanation:

<h3> The exercise is: "The Little Mexican restaurant sells only two kinds of beef burritos: Mucho beef and Mucho Mucho beef. Last week in the restaurant sold 16 orders of the single Mucho variety and 22 orders of the double Mucho. If the restaurant sold $231 Worth of beef burritos last week and the single neutral kind cost $1 Less than the double Mucho, how much did each type of burrito cost?"</h3>

Let be "x" the the cost in dollars of a single Mucho beef burrito and "y" the cost in dollars of a double Mucho burrito.

Set a system of equations:

\left \{ {{16x+22y=231} \atop {x=y-1}} \right.

To solve this system you can apply the Substitution Method:

1. Substitute the second equation into the first equation and solve for "y":

16(y-1)+22y=231\\\\16y-16+22y=231\\\\38y=231+16\\\\y=\frac{247}{38}\\\\y=6.5

2. Substitute the value of "y" into the second equation and evaluate in order to find the value of "x":

x=6.5-1\\\\x=5.5

5 0
2 years ago
What is the qoutient of 1/6 and 2/9
beks73 [17]

Answer:

\frac{3}{4}

Step-by-step explanation:

To find the quotient, we first need to know what quotient means.

Quotient is the solution to division problems.

So here is how we have to do this, first we identify our fractions:

\frac{1}{6}   and    \frac{2}{9}

Next, we must turn the fraction we are dividing by into a reciprocate:

\frac{2}{9} turns into \frac{9}{2}

Now we have \frac{1}{6} and \frac{9}{2}

Next, we multiply!:

\frac{1}{6} x \frac{9}{2} = \frac{9}{12}

Simplified:

\frac{3}{4}

8 0
3 years ago
Read 2 more answers
What is the Inverse operation needed to solve for p?<br> 765 = p - 254
KATRIN_1 [288]

Answer:

addition of 254 to both side

4 0
2 years ago
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Choose the phrase that best describes the matrix
lions [1.4K]

Answer:

coefficent matrix

Step-by-step explanation:

P. 366

"If the column of constant terms is not included, the matrix reduces to that of the coefficent matrix of the system"

-1 -3 -1

9 -9 -1

-1 -3 4

7 0
2 years ago
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2.4 liters of water is poured into a pitcher that now contains 10.1 liters of water. Which equation represents this?
Alenkinab [10]
I couldn’t figure out d answer to This hope this helped
8 0
2 years ago
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