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zhannawk [14.2K]
3 years ago
11

2 ALGEBRA 1 QUESTIONS HELP!!!

Mathematics
1 answer:
nikklg [1K]3 years ago
3 0
4)
3x-2y=10
5x+y=4

We solve this system of equation by elimination method.
   3x-2y=10
2(5x+y=4)
------------------------
13x=18

Answer: A)  13x=18

5)
slope-intercept form:
y=mx+b
y=f(x)

m=slope
b=y-intercept

1) we calculate the slope:
we choose any two points of this table:
For example: (2,2) and (3,4)

Given two points (x₁,y₁) and (x₂,y₂) the slope of the line that passes through these points will be:
m=(y₂-y₁)/(x₂-x₁)
In this case:
m=(4-2)/(3-2)=2

2) we compute "b";
we choose an any point of this talbe:
For example: (4,6), and we substitute "x" for "4" and "y" for "6" in the next equation:
y=2x+b  
6=2(4)+b
b=6-8
b=-2

3) we build the function that it belong this table:
m=2
b=-2
f(x)=mx+b
f(x)=2x-2

Answer: B) f(x)=2x-2

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help me with the Quadratic equation.... x2+ (p - 5) x + 2q = 0 has the roots −3 and 6. Find the value of P and the value of q.​
nirvana33 [79]

Step-by-step explanation:

The quadratic equation is x² + (p - 5)x + 2q = 0.

By Vieta's Formula,

we have SOR = -b/a and POR = c/a.

=> (-3) + (6) = -(p - 5) and (-3)(6) = 2q.

=> 3 = 5 - p and -18 = 2q

Hence, p = 2 and q = -9.

Alternate Method:

We have (x + 3) and (x - 6) as factors of the quadratic equation x² + (p - 5)x + 2q = 0.

=> (x + 3)(x - 6) = x² - 3x - 18.

By Comparing Coefficients,

(p - 5) = -3 and 2q = 18.

Hence p = 2 and q = -9.

8 0
2 years ago
Someone please help will mark as brainliest
Anit [1.1K]

Answer:

Perpendicular(p)=21

base(b)=20

hypotenuse(h)=29

Step-by-step explanation:

Now by using the formula:

cos A=b/h

i.e 20 by 29

5 0
2 years ago
A clothing store sells a customer 3 T-shirts and 4 pairs of shorts for $83.
ss7ja [257]
3t + 4s = $83
4t + 1s = $50 (x 4)

16t + 4s = $200
3t + 4s = $83 (minus them£

13t = $117 (divide by 13)

t = $9

sub t into first equation.

3 x 9 = 27
27 + 4s = $83
4s = $56
s = $14

t = $9
s = $14
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36, 3.6, 0.36, 0.036 is the order
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