1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Mandarinka [93]
3 years ago
14

2x - y - 4 = 0 3x + y - 9 = 0 What is the solution set of the given system?

Mathematics
1 answer:
Ad libitum [116K]3 years ago
5 0

Answer:

(\frac{13}{5};\frac{6}{5}).

Step-by-step explanation:

1)\left \{ {{5x=13} \atop {y=2x-4}} \right.  \ 2)\left \{ {{x=\frac{13}{5} } \atop {y=\frac{6}{5} }} \right.

short explanation: 1) to add the 1st equation to the 2d; 2) to calculate the value of 'x', then to substitute x=13/5 into the 2d equation and calculate the value of 'y'.

You might be interested in
HELP ME PLEASE <br> Again lol
KatRina [158]
False
true
false
i could be wrong but i’m 85% certain
4 0
2 years ago
Find m∠U.<br> Write your answer as an integer or as a decimal rounded to the nearest tenth.
Ilia_Sergeevich [38]

Answer:

∠U = 56.4

Step-by-step explanation:

We can use trigonometric functions to solve this

Here we are given the opposite side of ∠U as well as the adjacent side.

When dealing with the adjacent and opposite side we use sin

Sin = Opposite side / Adjacent side

Opp = 5 and adj = 6

So

Sin(U) = 5/6

* take the inverse sine of both sides *

arc(sin)(u) = u

arcsin(5/6) = 56.4 *( rounded to the nearest tenth )

∠U = 56.4

5 0
2 years ago
Read 2 more answers
What is the length of the base of a right triangle with an area of 20 square meters and a height of 4 meters? 5 m 10 m 80 m 160
o-na [289]
You find the area of a triangle by using 1/2*b*h where b is the base and h is the height. since we already know the area is 20 and the height is for you plus them in so the problem would be 20= 1/2 (b) (4) then you multiply what you know together to get 20= 2b and then isolate the b by dividing both sides by two so the base should be 10 m
8 0
2 years ago
Read 2 more answers
Can someone please tell the answers to all of the questions I don’t understand them
Butoxors [25]

Hey

Question 1: For this one, we simply need to look at the "fat grams over 25" and the "Total" sections. We can see that 27 out of 50 have fat grams over 25. This written as a percentage is: 54%

Question 2: Using the same logic above we conclude the answer is 45.45%

Question 3: For this we need to look at the "total" section and the answer is 50

Question 4: We add all the "over 300" and write it as a percentage out of 50 which is 14%

Question 5: Same as #1 answer is 21%

Hope this helps

3 0
3 years ago
Help ppppppppppppllllllllllllllllsssssssss
marissa [1.9K]

Answer:

option b)

tan²θ + 1 = sec²θ

Step-by-step explanation:

The Pythagorean trigonometric identity is a trigonometric identity expressing the Pythagorean theorem in terms of trigonometric functions.

hypotenuse² = height² + base²

Given in the questions are some pythagorus identities which except of b) are all incorrect as explained below.

<h3>1)</h3>

sin²θ + 1 = cos²θ     incorrect

<h3>sin²θ + cos²θ = 1 correct</h3><h3 /><h3>2)</h3>

by dividing first identity by cos²θ

sin²θ/cos²θ + cos²θ/cos²θ = 1/cos²θ

<h3>tan²θ + 1 = sec²θ  correct</h3><h3 /><h3>3)</h3>

1 - cot²θ = cosec²θ  incorrect

by dividing first identity by sin²θ

sin²θ/sin²θ + cos²θ/sin²θ = 1/sin²θ

<h3>1 + cot²θ = cosec²θ correct</h3><h3 /><h3>4)</h3>

1 - cos²θ  = tan²θ

not such pythagorus identity exists

4 0
3 years ago
Read 2 more answers
Other questions:
  • The circumference of a dinner plate is 15.7 inches what is the radius
    6·2 answers
  • Travis just started high school and he wants to manage his time wisely. He schedules 3/2 hours each day for homework, 1/2 of an
    5·1 answer
  • Miyuki can type 135 words in 3 minutes.How many words can she expect to type in 8 minutes?
    9·2 answers
  • The vertex angle of an isosceles triangle measures 40°. What is the measure of a base angle?
    10·1 answer
  • What are the supplementary angels?
    9·1 answer
  • Type your questiona circle has a diameter of 81 pie square units. what is the diameter of the circle?
    6·1 answer
  • -10x - 135 = 117 + 2x​
    15·2 answers
  • Draw an area model. Then, solve using the standard algorithm. 3times41
    13·1 answer
  • What is the slope for (-11,7),(15,-3)​
    12·2 answers
  • Solve for the value of x and y if ADCB - NOPM.<br> I need that please
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!