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NemiM [27]
3 years ago
5

I need the answer for this question

Mathematics
1 answer:
aleksley [76]3 years ago
4 0
Yup it’s b for sure
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Question 11 Find the value of y. X+ 13 45° No links please! Thanks for the help!​
9966 [12]

Answer:

First option: 13 \sqrt{2}

Step-by-step explanation:

cosθ =  \frac{adj}{hyp}

cos45° =  \frac{13}{y}

Multiply both sides by y:

y(cos45°) = 13

y ( \frac{ \sqrt{2} }{2} ) = 13

y = 13 \div  \frac{ \sqrt{2} }{2}

y = 13 \times  \frac{2}{ \sqrt{2} }

y =  \frac{26}{ \sqrt{2} } ( \frac{ \sqrt{2} }{ \sqrt{2} } )

y =  \frac{26 \sqrt{2} }{2}

y = 13 \sqrt{2}

7 0
3 years ago
Read 2 more answers
Graph -12x + 3y = 24
natali 33 [55]

Answer:

4x -y + 8=0

Step-by-step explanation:

:)

3 0
4 years ago
The size of the bulletin board is 8.47m. The teacher wants to divide it into 7 sections. What will be the size of each section?
Harrizon [31]

Answer:

the bulletin board will be 1.21 M

4 0
3 years ago
Write a quadratic equation in standard form that has a vertex of (-2, 6) and passes through (-4, -2).
Marizza181 [45]

Answer:

The equation of the quadratic in standard form is:

y=-2x^2-8x-2

Step-by-step explanation:

Since they give us the information about where the vertex of the parabola is located, and one extra points where it passes through, we can use the general form of a quadratic in vertex form:

y-y_v=a\,(x-x_v)^2

where (x_v,y_v) is the location of the vertex (in our case the point (-2,6).

Therefore the equation above becomes:

y-y_v=a\,(x-x_v)^2\\y-6=a\,(x-(-2))^2\\y-6=a\,(x+2)^2

Now,we can use the fact that the point (-4,-2) is also a point of the graph, to find the value of the parameter "a":

y-6=a\,(x+2)^2\\-2-6=a\,(-4+2)^2\\-8=a\,(-2)^2\\-8=a\,*4\\a=-2

Then, the equation of the quadratic with such characteristics becomes:

y-6=-2\,(x+2)^2\\y-6=-2x^2-8x-8\\y=-2x^2-8x-2

which is the equation of the quadratic in standard form.

7 0
3 years ago
Need a clear answer ASAP please
pashok25 [27]

Answer:

If the interest is yearly $2702.87 will be owed

Step-by-step explanation:

first you would need to find out how much 11.3% of $1205 is which is $136.17. And since the interest is yearly you would multiply the $136.17 by the 11 years which would be $1497.87. Then you would add the amount that they borrowed to the interest that they would owe after 11 years which would be $1497.87 + $1205 = $2702.87. So after 11 years the total amount that must be repaid is $2702.87

8 0
3 years ago
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