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
Vedmedyk [2.9K]
3 years ago
9

Please help me with 8, 9, and 10 thanks! Show work too

Mathematics
1 answer:
Harrizon [31]3 years ago
3 0
In 8, 9, 10, all the triangles are similar, meaning corresponding sides have the same ratio.

8. hypotenuse / (short side) = 25/x = x/9
  x² = 25*9 = 5²×3²
  x = √(5²×3²) = 5*3 = 15

9. (long side) / (short side) = x/7 = 9/x
  x² = 7*9
  x = √(9*7) = 3√7

10. (short side) / (long side) = x/48 = 48/64
  x = 48²/64 = 36
You might be interested in
How do you solve 235+123 using a number line?
Scrat [10]
You would either start at 0 and go over 235  then you would go over 123 more
6 0
3 years ago
a cell phone plan offers 250 minutes each month for 15.00 dollars per month. what is the cost per minute when a person uses all
Nezavi [6.7K]
It costs 0.06 cents each minute.

Explanation : $15/250 minutes = $0.06
4 0
3 years ago
How many 1/3 cups are in 9 cups?
borishaifa [10]
There are 27 1/3 cups in 9 cups.
5 0
3 years ago
Which of these graphs represents a rate of change of 4?
mamaluj [8]
<h2><em>The last graph because the slope is 40. </em></h2><h2><em> </em></h2><h2><em>Slope equals rise over run </em></h2><h2><em> </em></h2><h2><em>Rise is 4/ Run is 1 </em></h2><h2><em> </em></h2><h2><em>4/1=4 </em></h2><h2><em> </em></h2><h2><em>Slope (rate of change)=4</em></h2><h2><u><em>C</em></u></h2>
7 0
2 years ago
1. Write a quadratic function, in standard form, that fits the set of points. Solve it as a system of three equations
sasho [114]

Answer:

The equation is y=2x^2+4x-7

Step-by-step explanation:

Let the quadratic function be


y=ax^2+bx+c


The point (-4,9) must satisfy this function,

\Rightarrow a(-4)^2+b(-4)+c=9


\Rightarrow 16a-4b+c=9...(1)


The point (0,-7) must also satisfy this function,

\Rightarrow a(0)^2+b(0)+c=-7


\Rightarrow c=-7...(2)



The point (1,-1) must also satisfy this function,

\Rightarrow a(1)^2+b(1)+c=-1


\Rightarrow a+b+c=-1...(3)


We put equation 2 into equation 1 to get;


\Rightarrow 16a-4b-7=9


\Rightarrow 16a-4b=16


\Rightarrow 4a-b=4...(5)


We again put equation 2 into equation 3 to get;


\Rightarrow a+b-7=-1


\Rightarrow a+b=6...(6)


We add equation 5 and 6 to get;

5a=10


\Rightarrow a=2


We put a=2 into equation 6 to get;


2+b=6


\Rightarrow b=6-2


\Rightarrow b=4


The equation is therefore y=2x^2+4x-7

5 0
3 years ago
Other questions:
  • Ethan bought 4 greeting cards for $12 which proportion can be used to find p the price for nine of the same cards
    14·1 answer
  • What is the circumference of the circle with a diameter of 33?
    15·1 answer
  • Find the area of a circle with a circumference of 34.6 feet
    7·1 answer
  • Simplify the expression using the distributive property.
    10·1 answer
  • What is the percent of change from 240 to 480?
    12·1 answer
  • a float in the Tournament of Roses Parade may use as many flowers as a florist sells in 6 years if f is a number of flowers a fl
    5·1 answer
  • Which Equation is a linear function
    5·1 answer
  • ***WILL GIVE BRAINLIEST TO FIRST ANSWER*** ***LOTS OF POINTS*** I attached the image of the problem I need answered below, the f
    7·1 answer
  • N is an integer.<br>Write the values of n such that -15 &lt; 3 &lt; 6​
    12·1 answer
  • Need help with this question asap
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!