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
Bingel [31]
2 years ago
14

Nolan polled the 2 fastest swimmers on the swim team.

Mathematics
1 answer:
torisob [31]2 years ago
4 0

Here's link to the answer:

cutt.us/tWGpn

You might be interested in
X.7=14 plz help me 4th grade work
OlgaM077 [116]

x*7=14

14/7=2

x=2

brainliest please

8 0
3 years ago
0=4t-16t^2 Solve this please
vaieri [72.5K]

Answer:

\large\boxed{t=0\ \vee\ t=\dfrac{1}{4}}

Step-by-step explanation:

4t-16t^2=0\qquad\text{divide both sides by 4}\\\\\dfrac{4t}{4}-\dfrac{16t^2}{4}=\dfrac{0}{4}\\\\t-4t^2=0\\\\t(1-4t)=0\iff t=0\ \vee\ 1-4t=0\\\\1-4t=0\qquad\text{subtract 1 from both sides}\\\\-4t=-1\qquad\text{divide both sides by (-4)}\\\\t=\dfrac{1}{4}

7 0
3 years ago
In right △ABC, the altitude CH to the hypotenuse AB intersects angle bisector AL in point D. Find the sides of △ABC if AD = 8 cm
tangare [24]

Answer:

AC=8\sqrt{3}\ cm\\ \\AB=16\sqrt{3}\ cm\\ \\BC=24\ cm

Step-by-step explanation:

Consider right triangle ADH ( it is right triangle, because CH is the altitude). In this triangle, the hypotenuse AD = 8 cm and the leg DH = 4 cm. If the leg is half of the hypotenuse, then the opposite to this leg angle is equal to 30°.

By the Pythagorean theorem,

AD^2=AH^2+DH^2\\ \\8^2=AH^2+4^2\\ \\AH^2=64-16=48\\ \\AH=\sqrt{48}=4\sqrt{3}\ cm

AL is angle A bisector, then angle A is 60°. Use the angle's bisector property:

\dfrac{CA}{CD}=\dfrac{AH}{HD}\\ \\\dfrac{CA}{CD}=\dfrac{4\sqrt{3}}{4}=\sqrt{3}\Rightarrow CA=\sqrt{3}CD

Consider right triangle CAH.By the Pythagorean theorem,

CA^2=CH^2+AH^2\\ \\(\sqrt{3}CD)^2=(CD+4)^2+(4\sqrt{3})^2\\ \\3CD^2=CD^2+8CD+16+48\\ \\2CD^2-8CD-64=0\\ \\CD^2-4CD-32=0\\ \\D=(-4)^2-4\cdot 1\cdot (-32)=16+128=144\\ \\CD_{1,2}=\dfrac{-(-4)\pm\sqrt{144}}{2\cdot 1}=\dfrac{4\pm 12}{2}=-4,\ 8

The length cannot be negative, so CD=8 cm and

CA=\sqrt{3}CD=8\sqrt{3}\ cm

In right triangle ABC, angle B = 90° - 60° = 30°, leg AC is opposite to 30°, and the hypotenuse AB is twice the leg AC. Hence,

AB=2CA=16\sqrt{3}\ cm

By the Pythagorean theorem,

BC^2=AB^2-AC^2\\ \\BC^2=(16\sqrt{3})^2-(8\sqrt{3})^2=256\cdot 3-64\cdot 3=576\\ \\BC=24\ cm

3 0
3 years ago
Which of the diagrams below represents the statement, "If it is not an apple, then it is not fruit"?
kherson [118]
I'm pretty sure it is figure A
3 0
3 years ago
Read 2 more answers
X – y ≥ -4. <br> 2x – y ≤ 5. <br> 2y + x &gt; 1
Katen [24]
I took a picture of the work instead ^^

4 0
3 years ago
Other questions:
  • there are two cubes. the smaller cube has a surface area of 24 square units. the larger cube has a surface area that is twice th
    8·1 answer
  • If the input value is 4, what is the output value for the following function?
    11·1 answer
  • Given that m2(n-l) m=-2 and n=3/4​
    14·1 answer
  • A) What is the probability that when using an unfair coin, with a head = 1/5 and a tail =4/5:
    14·1 answer
  • You install 580 feet of fencing along the perimeter of a rectangular yard. The width of the yard is 144 feet. What is the length
    12·1 answer
  • Fill in the blanks with a positive or negative Integer
    10·1 answer
  • Can someone help me with this pleasee!?
    13·1 answer
  • I need help!!!!<br><br> The square below has the given side lengths. x is positive
    15·2 answers
  • How many squares with a side of 3 cm can fit in a 12 cm by 3 cm rectangle
    11·2 answers
  • Here are some of the numbers that were picked out of the bag at bingo evening:
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!