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
allochka39001 [22]
2 years ago
14

Helppppp mathhhhhhhhhhhh

Mathematics
2 answers:
Karo-lina-s [1.5K]2 years ago
8 0
Y - 3 = 2x -1 ...y = 2x + 2

x +3 = y - 1 

replace y = 2x + 2 into x +3 = y - 1 

x +3 = 2x + 2 - 1 
2x -x = 3 -1
x = 2

y = 2x + 2
y = 2(2) + 2 = 6

answer x = 2 , y = 6 first choice

Basile [38]2 years ago
5 0
Try to substitute the values of X and Y inside, and use Pythagorean theorem to see if the triangles are congruent. 
You might be interested in
Let each Square represent 1/3 unit by 1/3 unit.
Varvara68 [4.7K]
(5/3)*(7/3) = 35*(1/3)²

The area is 35 square units.
7 0
3 years ago
Please help! ive been stuck on this for so long and i just keep getting frustrated can someone help walkme through this?
bagirrra123 [75]

For firework launched from height 100ft with initial velocity 150ft/sec, equation made is correct

(a) equation will be h(t) = -16t^2+150t+100

(b) Now we have to see when it will land. At land or ground level height h will be equal to 0. So simply plug 0 in h place in equation made in part (a)

0 = -16t^2 + 150t + 100

Now we have to solve this quadratic. We will use quadratic formula method to solve this equation.

t = \frac{-b \pm  \sqrt{b^2-4ac}}{2a}

a = -16, b = 150, c = 100.

Plugging these values in quadratic formula we get

t = \frac{-150 \pm  \sqrt{150^2-4(-16)(100)}}{2(-16)}

t = \frac{-150 \pm  \sqrt{22500+6400}}{-32}

t = \frac{-150 \pm  \sqrt{28900}}{-32}

t = \frac{-150+170}{-32}  = \frac{20}{-32} = -0.625

time cannot be negative so we will drop this answer

then t = \frac{-150-170}{-32}  = \frac{-320}{-32} = 10

So 10 seconds is the answer for this

(c) To make table simply plug various value for t like t =0, 2, 4, 6, 8 till 10. Plug values in equation mad in part (a) and find h value for each t as shown

For t =0 seconds, h = -16(0)^2+150(0)+100 = 100 feet

For t =2 seconds, h = -16(2)^2+150(2)+100 =336 feet

For t =4 seconds, h = -16(4)^2+150(4)+100 = 444 feet

For t =6 seconds, h = -16(6)^2+150(6)+100 = 424 feet

For t =8 seconds,h = -16(8)^2+150(8)+100 = 276 feet

For t =10 seconds, h = -16(10)^2+150(10)+100 = 0 feet

(d) Axis of symmetry is given by formula

x = \frac{-b}{2a}

t = \frac{-150}{2(-16)} =\frac{-150}{-32} = 4.6875

t = 4.6875 is axis of symmetry line

(e) x-coordinate of vertex is again given by formula

x = \frac{-b}{2a}

so t = 4.6875

then to find y coordinate we will plug this value of t as 4.6875 in equation made in part (a)

For t =4.6875, h = -16(4.6875)^2+150(4.6875)+100 = 451.563

so vertex is at (4.6875, 451.563)

(f) As the firework is launched so in starting time is t=0, we cannot have time before t=0 (negative values) practically. Also we cannnot have firework going down into the ground so we cannot have h value negative physically.

6 0
2 years ago
Evaluate the expression below if<br> a = 8 and b=-5<br> I a l - I b I
Grace [21]
The answer should be 3 since its the absolute value and thats just how far a number is from 0 so it would be 8-5=3
5 0
1 year ago
Select all of the ordered pairs that are solutions to the system
mr Goodwill [35]

Answer:

(0,0)

(2,2)

(0,1)

Step-by-step explanation:

All of these points lie inside

7 0
3 years ago
5. How many calories in a 2,500-calorie diet represent veggies in the circle graph? PLEASE HELP DUE VERY SOON
NeX [460]

Answer:

875 calories

Step-by-step explanation:

100%=2500calories

35% represents veggies

35*2500=87500÷100=875

875calories

8 0
3 years ago
Other questions:
  • Traverion wants to find the answer to the question “how much money does the average college professor make?” He surveys 50 profe
    13·1 answer
  • A single-engine airplane is heading due east at a constant speed of 150 mi / h. There is a 30 mi / h cross wind blowing north. W
    5·1 answer
  • True or false? The value zc is a value from the standard normal distribution such that P(−zc &lt; z &lt; zc) = c.
    9·1 answer
  • Write 2050000 in scientific notation( with exponents)
    14·2 answers
  • If cos θ = -2/5 and tan θ &gt; 0, what is the value of sin θ? PLEASE HELP!!!
    11·1 answer
  • What are two solution to x&lt;8
    11·1 answer
  • Which shape could not be a cross section for this cube?
    9·1 answer
  • Umulative Exam Active 11 What are the values of the digits in 90,406? O 9 thousands, 4 tens, and 6 ones 9 thousands, 4 hundreds,
    12·2 answers
  • Is ∠ABC ≅ ∠ADC? Yes or no and why. PLEASE HELP ME? thanks. BRAINLIEST to CORRECT answers ONLY. PLEASE NO LINKS
    11·1 answer
  • Another way to write g(h(x)) is<br><br> (gOh)(x)<br> (hog)(x)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!