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AURORKA [14]
3 years ago
8

Worth 50 points and I will mark brainliest.

Mathematics
1 answer:
olchik [2.2K]3 years ago
7 0

x= -13 , y=11

Step-by-step explanation:

Using elimination method, make the x variable equal to eliminate the variable

-3x - y = -28

2x+ 3y=7

2(-3x-y =28)

3(2x+3y=7)

-6x - 2y =56

6x +9y=21

Apply addition

7y = 77

y=77/7 = 11

Use the value of y=11 in  

2x+ 3y=7

2x +3(11) =7

2x +33 =7

2x=7-33

2x= -26

x= -26/2 = -13

Learn More

Solving simultaneous equations :brainly.com/question/12318095

Keywords ; linear combination method,equations, justify,steps

#LearnwithBrainly

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Write two point-slope equations for the line passing through the points (6, 5) and (3, 1). Show your work.
NikAS [45]

Answer:

y=-4/3x-3

Step-by-step explanation:

You look for the slope using the the slope formula (m=y2-y1/x2-x1)

You will end up with (m=1-5/3-6)

Simplify to end up with (-4/3) as your slope.

Then, pick a coordinate point. Your choices are (6,5) and (3,1). You will us it to plug into the equation.

I am picking (3,1) The y-value here is 1 and the x-value is 3.

Your equation to find b, or the y-intercept is going to be (1=-4/3(3)+b)

You will have to simplify.

1=-4/3(3)+b

You will multiply -4/3 and -3 and end up with 4 so it looks like...

1=4+b

You subtract 4 on both sides and then end up with....

-3=b

So, the final answer is: y=-4/3x-3

5 0
4 years ago
Read 2 more answers
Two lines meet at a point that is also the endpoint of a ray.
Brrunno [24]
  1. We have to find the adjacent angle of 125, which is 55 degrees.
  2. Add 55 + 90 (= 145) to find the adjacent angle of angle W.
  3. Subtract 145 from 180, to get the measure of angle W, which is 35.

HOPE THIS HELPED YOU!

4 0
3 years ago
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A pharmacist is trying to stock the pharmacy with cheaper alternatives for customers. She will stop carrying the more expensive
raketka [301]

Answer : C.  Caplet form is the most expensive.

Tablet form comes in 50 mg tablets and cost $75.00 for a bottle of 100 tablets.

50 mg of 100 tablets so 50 * 100 = 5000mg

5000mg cost = $75.00

So 1mg of tablet form cost = \frac{75}{5000} = 0.015

Capsule form comes in 75 mg capsules and cost $63.75 for a bottle of 85  capsules

75 mg of 85  capsules,  so 75 * 85 = 6375mg

6375mg cost = $63.75

So 1mg of Capsule form cost = \frac{63.75}{6375} = $0.01

Caplet form comes in 100 mg caplets and cost $70.00 for 40 caplets

100 mg of 40 caplets ,  so 100 * 40 = 4000 mg

4000mg cost = $70.00

So 1mg of Caplet form cost = \frac{70}{4000} = $0.0175

Caplet form is the most expensive.

4 0
4 years ago
Read 2 more answers
I'm so stuck I was taught this 5 months ago I don't remember this lol.
yan [13]

Answer:

C. 24 12/20

Step-by-step explanation:

4 3/4 × 6 4/5

24 3/4 × 4/5

24 12/20

5 0
3 years ago
Someone please help I don’t understand what this even is.
musickatia [10]

Answer:

A and D are not polynomials. B and C are polynomials

Step-by-step explanation:

In order to find out what function is a polynomial, you have to understand what a polynomial is. A polynomial is a sum of monomials that make up a polynomial expression. A mononomial is a real number, with a variable, and a exponent of a variable that makes up one term. For example 3x^{2} is a monomial. It has a real number, a variable, and a exponent that makes up one term. A polynomial has one or more monomial terms that make it a polynomial. So firstly, a polynomial by definition cannot have a negative exponent. That eliminates D. Why?  because by definition, the standard form of a polynomial function states that n cannot be positive, it has to be a nonnegative integer. Also, polynomials can only be real numbers. It cannot have a nonreal number. Radical forms without a perfect square are nonreal numbers. So that eliminates A. However, B and C can be polynomials because the definition of polynomials say that real numbers, nonnegative exponents, and constants can be part of a polynomial function. Even with the fraction, that would be part of rational expressions (polynomial/polynomial), which is polynomials. I hope this helps friend. Math can be tough to explain just as much as doing it :)

7 0
3 years ago
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