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
likoan [24]
3 years ago
15

Which expression helps you find the length x of a side of a rectangle that has a diagonal of 15 units and a width of 9 units?

Mathematics
2 answers:
aliina [53]3 years ago
6 0
15²-9²= x² use Pythagoras' theorum and square the two smaller sides to get the square of the hypotenuse (the diagonal) then rearrange this to get the above calculation
Setler79 [48]3 years ago
6 0

The diagonal of rectangle is 15 units and a width is 9 units.

Let the length of rectangle is x units.

Relation of sides of rectangle and diagonal

Sum of square of length of side of rectangle is equal to square of length of diagonal.

Using pythagoreous theorem:

x^2+9^2=15^2

x^2=15^2-9^2

x^2=(15+9)(15-9)

x^2=24\times 6

x^2=144

x=\sqrt{144}

x=12

Above all are possible expressions to find x.

You might be interested in
Suppose a population has a mean of 7 for some characteristic of interest and a standard deviation of 9.6. A sample is drawn from
valkas [14]

Answer:  A. 1.2

Step-by-step explanation:

Given : Sample size : n= 64

Standard deviation: \sigma=9.6

The formula to find the standard error of mean is given by :-

S.E.=\dfrac{\sigma}{\sqrt{n}}\\\\\Rightarrow\ S.E.=\dfrac{9.6}{\sqrt{64}}\\\\\Rightarrow\ S.E.=\dfrac{9.6}{8}=1.2

Therefore, the standard error of the​ mean= 1.2

Hence, A is the right option.

7 0
3 years ago
Find the slope of a line perpendicular to 2x-y-16
Alekssandra [29.7K]

put the equation 2x - y = 16 in the form of y = mx + c

2x - y = 16

2x = 16 + y

y = 2x - 16

the slope of this line is 2. the slope of a line perpendicular to it would be the negative reciprocal of 2. in other words, it would multiply with 2 to give -1.

you can form this equation with that info

2x = -1

x = -1/2

OR

you can flip and change the sign (numerator) of 2/1

2/1

= -1/2

6 0
3 years ago
What are these answers?
Inessa05 [86]
44
16
28
32
i think this is the answer
7 0
3 years ago
Please help! If possible please show your work. Thank you in advance!! :D
Rudiy27

Answer:

  • (-4)³ = -64
  • -64

Step-by-step explanation:

The first step in solving the equation is to cube both sides:

  (∛x)³ = (-4)³ . . . . . = (-4)(-4)(-4) = 16(-4) = -64

  x = -64 . . . . . simplified

__

We're not sure what "checking" is supposed to involve here. Usually, one would check the answer by seeing if a true statement is made when the answer is put into the original equation.

  ∛(-64) = -4 . . . true

Many calculators will not compute √(-64) because they compute roots using logarithms. The log of a negative number is not defined.

So, the way one would check this is to cube both sides, which is how we got the answer in the first place. We expect the same result from doing the same operation again, so it isn't really a check.

6 0
2 years ago
PLS I NEED HELP NOW PRONTO!!!!!
weeeeeb [17]

Answer:

The mean for Stem is 2.5

The mean for Leaf is 81.25

8 0
2 years ago
Other questions:
  • Graph the solution<br><br>PLZZZ I NEED HELP ASAP
    15·1 answer
  • bracelet costs $8. Simone is also buying a necklace for her mother for $18. She believes that her total will be $98. Which expre
    10·2 answers
  • Five times a number decreased by nine is equal to twice the number increased by 23. Which equation could be used to solve the pr
    14·2 answers
  • Solving Square Roots Worksheet (x - k)^2 : Part 1
    11·2 answers
  • The graph below shows the height of a projectile t seconds after it is launched. If acceleration due to gravity is –16 ft/s2, wh
    13·1 answer
  • Question is 15 points
    9·2 answers
  • Use &lt;, &gt;, or = to compare the following numbers.
    15·1 answer
  • What is the solution to the following equation? -32-8x=-7x+8(8x-4)
    13·2 answers
  • Please help will give you Brainliest *image
    14·1 answer
  • What is the vertex of the parabola? y+1=−14(x−2)2 Enter your answer in the boxes.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!