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MA_775_DIABLO [31]
3 years ago
10

Can someone help me out please?? I would really appreciate it.

Mathematics
1 answer:
Aleks04 [339]3 years ago
4 0
Tan(30deg) = n/rt(3)
1/rt(3) = n/rt(3)—> n=1
sin(30deg) = 1/m
1/2=1/m—> m=2
Thus m=2 ,n=1
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Find the discriminant and the number of real roots for x^2+2x+8=0
forsale [732]

Answer:

Discriminant: -28

Number of real roots: 2

8 0
3 years ago
A pair of equations is shown below: y = 6x + 9 y = 7x + 7 What is the solution to the pair of equations?
dimaraw [331]

Answer:

x=2, y= 21

Step-by-step explanation:

y = 6x + 9

y = 7x + 7

Since both equations are equal to y, we can set them equal to each other

6x+9 = 7x+7

Subtract 6x from each side

6x+9-6x = 7x -6x+7

9 = x+7

Subtract 7 from each side

9-7 = x+7-7

x=2

Now we need to find y

y = 6x+9

y = 6(2) +9

y = 12 +9

y = 21

4 0
3 years ago
5 less than the quotient of a number and 3 is -7
hram777 [196]
\frac{x}{3}  -  5  =  -7  .
____________________________________________
This would be one way to write the expresion/equation; in which "x" represents the unknown number.

Now, to solve for "x" ;
____________________________________________
Given:
____________________________________________
\frac{x}{3}  -  5  =  -7  ;

Add "5" to EACH SIDE of the equation:
_____________________________________________
\frac{x}{3}  -  5  + 5 =  -7  + 5 ;

to get:

\frac{x}{3}  = -2 ;

x = (-2 * 3) ;
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x =  - 6 .
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6 0
3 years ago
sierra worked for 38 hours this week and earned $427.50. write and solve an equation determine how much she makes per hour
Kisachek [45]

Answer:

$11.25 an hour

Step-by-step explanation:

427.50=38x

38x=427.5

÷by 38

x=11.25

3 0
3 years ago
A toy rocket is launched straight up into the air with an initial velocity of 60 ft/s from a table 3 ft above the ground. If acc
alexdok [17]
The equation is:
h ( t ) = - 16 t² + 60 t + 3
The toy rocket will reach the ground when: h ( t ) = 0
- 16 t² + 60 t + 3 = 0
t _{12} =  \frac{-60+/- \sqrt{3600+192} }{-32}
t 1 = - 0.05
t 2 = 3.8
Answer:
C ) 3.80 s

3 0
3 years ago
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