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USPshnik [31]
2 years ago
10

7x-2y-1= The x=3 The y is= 4

Mathematics
1 answer:
Damm [24]2 years ago
7 0

Answer:

=12

Step-by-step explanation:

You just plug in the variables

7x-2y-1

7(3)-2(4)-1

simplify the expression

solve

which will give you 12

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Find the exact value of sec theta if csc theta = -4/3 and the terminal side of theta lies in quadrant III
GREYUIT [131]

Answer:

-4 sqrt(7)/7

Step-by-step explanation:

csc theta = -4/3

csc theta = hypotenuse / opposite side

hypotenuse = 4  

opposite  = 3

Using the pythagorean theorem

a^2 + b^2 = c^2

3^2 + b^2 = 4^2

9+b^2 = 16

b^2 = 16-9

b^2 = 7

Taking the square root

sqrt(b^2) = sqrt(7)

b = sqrt(7)

We are in the third quadrant so only tan  and cot are positive

that means the x and y values are "negative"  so a = -3 and b = - sqrt(7)

sec theta = hypotenuse / adjacent

                = 4/ - sqrt(7)

rationalizing  

                   -4 sqrt(7)/ sqrt(7)* sqrt(7)

                = -4 sqrt(7)/7

           

3 0
3 years ago
Solve: 3/5y + 3 = 11 + 1/5y
ale4655 [162]

Answer:

Y=20

Step-by-step explanation:

y equals 20 because you simplify both sides of the equation then you have an isolated variable

7 0
3 years ago
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Based on your observations from Question 1, what is the relationship between AE and BF when DFB and CEA measure something other
VMariaS [17]

Answer:

if angle dfb and angle cea measure something other than 90degrees, then line we is not equal to line bf. in this case, line and and line cd intersect at a single point.

8 0
3 years ago
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What is the volume of a sphere that has a diameter of 12
posledela

Answer:

V≈904.78

Step-by-step explanation:

3 0
3 years ago
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Help thank u!
riadik2000 [5.3K]

Answer:

133

Step-by-step explanation:

$3500 - $1500 = $2000

2000/1500 ×100

=1.33 × 100

=133%

5 0
3 years ago
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