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
Mashutka [201]
3 years ago
8

Find solutions to the equation below. Check all that apply.

Mathematics
2 answers:
zubka84 [21]3 years ago
7 0

16x^2 - 64 = 0

16x^2 = 64

x^2 = 64/16

x^2 = 4

sqrt{x^2} = sqrt{4}

x = -2, x = 2

Answer: B and F

nevsk [136]3 years ago
3 0

Answer:

B and F

2, -2

Step-by-step explanation:

16x^{2} -64=0

Add 64 to both sides.

16x^{2} -64+64=0+64

Simplify

16x^{2} =64

Divide both sides by 16.

\frac{16x^{2} }{16} =\frac{64}{16}

Simplify

x^{2} =4

x=\sqrt{4} ,-\sqrt{4}

Simplify

x=2,-2

You might be interested in
Binomial Theorem
Tatiana [17]

Answer:

\frac{p^{4} x^{24}+6p^{2}q^{2}x^{12}+q^{4}+4p^{3}qx^{18}+4pq^{3}x^{6}}{x^{12} }

Step-by-step explanation:

3 0
3 years ago
Classify the two given samples as independent or dependent. sample​ 1: the scores of 20 students who took the act sample​ 2: the
topjm [15]

Classify the two given samples as independent or dependent.

sample​ 1: the scores of 20 students who took the act

sample​ 2: the scores of 20 different students who took the sat

Solution: The two given samples are independent samples because in both the samples, the scores of one student will not affect the scores of other students.

Independent samples are samples that are selected randomly so that its observations do not depend on the values other observations.


3 0
4 years ago
During the first part of a​ trip, a canoeist travels 96 miles at a certain speed. the canoeist travels 15 miles on the second pa
blondinia [14]
This problem is a problem using 
d = r * t
First part of the trip
d = 96 miles
r = ??
t = ??

Second part of the trip
d = 15 miles
r = r - 5
t = 4 - t

Solve for r first.
96/r + 15/(r - 5) = 4 hours                multiply through by r and r - 5
96(r - 5) + 15r  = 4*(r - 5)(r)             Remove the brackets on the left
96r - 480 + 15r = 4*r*(r - 5)             Collect like terms on the left.
111r - 480 = 4r(r - 5)                        Remove the brackets on the right.
111r - 480 = 4r^2 - 20r                     Bring the left side over to the right side.
0 = 4r^2 - 20r - 111r + 480               Collect like terms.
0 = 4r^2 - 131r + 480

The only way I could do this was to use the quadratic equation.

\text{x = }\dfrac{ -b \pm \sqrt{b^{2} - 4ac } }{2a}

a = 4

b = - 131

c = 480

\text{x = }\dfrac{ -(-131) \pm \sqrt{(-131)^{2} - 4*4*480 } }{2*4}
\text{x = }\dfrac{ 131 \pm \sqrt{(17161) - 7680 } }{8}
\text{x = }\dfrac{ 131 \pm \sqrt{9481 } }{8}
\text{x = }\dfrac{ 131 \pm 97.37  }{8}

x = (131 + 97.38)/8
x = 28.55
x = (131 - 97.37)/8
x = 4.20

4.2 isn't going to work because the slower speed has to be larger than 5, otherwise you will get a negative speed (as this solution will give), so 4.20 is an extraneous solution.

r = 28.55 for the first  part of the trip and
r = 23.55 for the second part of the trip.

Check.
Let's see if the times add up to 4
d/r = t
96/28.55 = 3.36
15/22.75 = 0.64

The times do = 4, so the rates are correct.

Answers
r1 = 28.55 for the 96 mile trip.
r2 = 23.55 for the 15 mile trip.

8 0
3 years ago
Question in attachment​
valkas [14]

Answer:

Hey Dude....

Step-by-step explanation:

This is ur answer.....

<h3><em>(a) Six</em></h3><h3><em>(a) Six(b) 120</em></h3><h3><em>(a) Six(b) 120(c) 720</em></h3>

Hope it helps!

Brainliest pls!

Follow me! :)

7 0
2 years ago
Sandy bought a soft drink for 2 dollars and 5 candy bars. She spent a total of $12. How much did each candy bar cost?
Roman55 [17]

Answer:

If Sandy bought a soft drink for 2 dollars that's 2 dollars subtracted from the total of $12.00 spent

If we have 10 dollars and bought 5 candy bars we would divide so 10 divided by 5 = 2 so each candy bar costed $2 dollars

6 0
2 years ago
Other questions:
  • What is the distance between (2, -1) and (-1, -5) on the coordinate plane? 7 units 6 units 5 units 4 units
    7·1 answer
  • Don collects trading cards. His favorites are baseball and football
    5·1 answer
  • A rectangle with an area of 16 square units?
    10·1 answer
  • Can you click on this link and donate? https://www.patreon.com/rising_up77
    15·1 answer
  • Θ এর কোন মানের জন্য sin2θ+cos2θ= 1 হয় ?​
    9·1 answer
  • Complete the pattern. 1, 2, 4, 8, 16, __, __, __
    14·1 answer
  • Consider the figure below.
    5·1 answer
  • What the equation in point-slope form, matchs the graphed line shown
    7·1 answer
  • Enter the correct 4 digit code
    14·2 answers
  • Amir drove from Jerusalem to the lowest place on Earth, the Dead Sea. His altitude relative to sea level (in meters) as a functi
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!