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
olga2289 [7]
2 years ago
12

Is anyone good at math and can help with this, or at least the first one and explain how to do it?​

Mathematics
1 answer:
Anna007 [38]2 years ago
8 0

now, bear in mind that all these ones are lines, and to graph a line all you need is two points, so let's pick a couple of random values for say "x" and let's see what we get for "y" and that's our x,y point.

3)

9x+4y=-16\implies \stackrel{\textit{using x = 0}~\hfill }{9(0)+4y=-16}\implies 4y=-16 \\\\\\ y=\cfrac{-16}{4}\implies y=-4~\hspace{10em}(0~~,~~-4) \\\\[-0.35em] ~\dotfill\\\\ 9x+4y=-16\implies \stackrel{\textit{using x = -4}~\hfill }{9(-4)+4y=-16}\implies -36+4y=-16 \\\\\\ 4y=20\implies y = \cfrac{20}{4}\implies y = 5~\hspace{10em}(-4~~,~~5)

check the red line in the picture below.

4)

5x+2y=8\implies \stackrel{\textit{using x = 0}~\hfill }{5(0)+2y=8}\implies 2y=8\implies y=\cfrac{8}{2}\implies y=4 \\\\\\ ~\hspace{10em}~\hspace{10em}(0~~,~~4) \\\\\\ 5x+2y=8\implies \stackrel{\textit{using x = 4}~\hfill }{5(4)+2y=8}\implies 20+2y=8\implies 2y=-12 \\\\\\ y=\cfrac{-12}{2}\implies y=-6~\hspace{10em}(4~~,~~-6)

check the blue line in the picture below.

You might be interested in
If the area of a circle measures 25 pi cm², what is the circumference of the circle in terms of pi?
jeyben [28]

Answer:

10π cm

Step-by-step explanation:

Given

Area of the circle=25π cm^2

Solution

πr^2=25π

r^2=25

r=√25

r=5

So circumference of the circle=2πr

=2π×5

=10π cm

So the answer is 10π cm

8 0
2 years ago
A student is asked to find the length of the hypotenuse of a right triangle. The length of one leg is 32
zavuch27 [327]

Hypotenuse =39cm of right angle triangle! .

<u>Step-by-step explanation:</u>

Here we have , A student is asked to find the length of the hypotenuse of a right triangle. The length of one leg is 32  centimeters, and the length of the other leg is 25 centimeters. The student incorrectly says that the  length of the hypotenuse is 7.5 centimeters. We need to find:

A)

We have , One length as 32 cm and other as 25 cm , as

Perpendicular = 32cm\\Base=25cm

By Pythagoras Theorem ,

⇒ Hypotenuse^2 = Perpendicular^2+Base^2

⇒ Hypotenuse^2 =32^2+22^2

⇒ \sqrt{Hypotenuse^2} =\sqrt{1024+484}

⇒ Hypotenuse =39cm

So , Hypotenuse =39cm of right angle triangle! .

4 0
3 years ago
Read 2 more answers
Can anyone help me with factoring Trinomials ? If you can comment and I'll message you . If you don't know how to factor Trinomi
bearhunter [10]
I did this two years ago. Hope I can help you.
7 0
3 years ago
I will give brainliest
jasenka [17]

Answer:

24 Units.

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
The living room in a new house has the dimensions shown. What is the volume of the room?
irga5000 [103]

Answer:

v = 220 yd²

Step-by-step explanation:

Small portion

v = 5 * 4 * 3

v = 60 yd²

Large portion

v = 9 * 6 * 3

v = 162 yd²

Total

v = 60 + 162

v = 220 yd²

5 0
2 years ago
Other questions:
  • Given the function, f(x)= √ x+2+3 choose the correct transformation
    7·1 answer
  • Given f(x) = 4x4 + 5x3 – 15x2 – 45, find f(–3).
    5·2 answers
  • Arrange the numbers in decreasing order.<br> 83.508<br> 83.58 83.5 83.058
    11·2 answers
  • Whether it’s 74.89, 30.29, 38.16 or 66.73
    15·1 answer
  • Delia has 493 stamps in her stamp collection she can put $0.16 on each page of an album how many pages can she fill completely
    12·1 answer
  • Divya is painting a room. She uses 34 gallon of paint to cover 15 of a wall. If the walls are all the same size, how much paint
    12·1 answer
  • A speed skater completers a 500-meter race in 40 seconds. A cheetah runs 260 meters in 10 seconds. How do their speeds compair?
    13·1 answer
  • In 2005 the U.S. Census Bureau reported that 68.9% of American families owned their homes. Census data reveal that the ownership
    7·1 answer
  • You are a cool peson
    5·1 answer
  • Please help show work<br><br> A 1<br> B 28 <br> C 7 <br> D 14
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!