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
alina1380 [7]
3 years ago
15

I need help with this

Mathematics
1 answer:
steposvetlana [31]3 years ago
4 0
X=7y-8 because subtract 7y from both sides and then multiply by 1
You might be interested in
The height H of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 9
mariarad [96]

Answer:

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

Step-by-step explanation:

Statement is incorrect. Correct form is presented below:

<em>The height </em>h(t)<em> of an ball that is thrown straight upward from an initial position 3 feet off the ground with initial velocity of 90 feet per second is given by equation </em>h(t) = 3 +90\cdot t -16\cdot t^{2}<em>, where </em>t<em> is time in seconds. After how many seconds will the ball be 84 feet above the ground. </em>

We equalize the kinematic formula to 84 feet and solve the resulting second-order polynomial by Quadratic Formula to determine the instants associated with such height:

3+90\cdot t -16\cdot t^{2} = 84

16\cdot t^{2}-90\cdot t +81 = 0 (1)

By Quadratic Formula:

t_{1,2} = \frac{90\pm \sqrt{(-90)^{2}-4\cdot (16)\cdot (81)}}{2\cdot (16)}

t_{1} = 4.5\,s, t_{2} = 1.125\,s

The ball will be 84 feet above the ground 1.125 seconds and 4.5 seconds after launch.

3 0
3 years ago
Help please NOW this is an emergency
Nimfa-mama [501]
It’s the second option
4 0
3 years ago
If the lines of a system of equations never intersect then, then the system has no____
eduard

Answer:

solution

Step-by-step explanation:

7 0
3 years ago
Heather has to solve this system of equations using elimination. What should be her first step?
charle [14.2K]
I don’t know what the equation is but when using elimination you should cancel out opposite numbers such as 4x and negative 4x
6 0
3 years ago
Read 2 more answers
To the nearest tenth, find the approximate distance between points A and C. Graph with coordinates A negative 4, negative 4. B n
Musya8 [376]
We have that
A(-4,-4) B(-2,5)  C(2,1)  D(2,-4)

step  1
find the distance AC with the formula 
d=√[(y2-y1)²+(x2-x1)²]------> dAC=√[(1+4)²+(2+4)²]----> dAC=√61 units
dAC=√61-----> dAC=7.8 units

the answer is
the option
<span>B. 7.8 units</span>
6 0
3 years ago
Read 2 more answers
Other questions:
  • If juliana and brody hiked both trails, how far did they hike? 3 2/3 and 2 5/6
    9·1 answer
  • To join a gym, you have to pay an initial fee of $50 and $30 per month. Write an equation representing total cost (t).
    9·2 answers
  • Solve the given system of equations.
    12·2 answers
  • Which of these situations does not have quantities that combine to make 0.
    8·1 answer
  • Of the flowers on Alonzo's yard, 2/5 are tulips. Of the tulips, 5/8 are yellow. What fraction of the flowers on Alonzo's yard ar
    14·1 answer
  • What is the lowest value of the range of the function
    14·1 answer
  • Keona pours 128 ounces of water into a jar 3 times to fill it. How many pints of water does it take to fill the jar?
    7·2 answers
  • Draw a number line . Locate each integer on the number line.
    12·2 answers
  • Sienna bought vegetables to make a large pot of vegetable soup. She bought 5.35 pounds of potatoes, 3.8 pounds of carrots, and 2
    9·1 answer
  • Evaluate each expression using the order of operations 35-14/2+8 to the power of 2
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!