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
ELEN [110]
3 years ago
6

Evan, Claire, Jaya and Tim are running a 3 km relay race. Evan ran 7/8 of a km,

Mathematics
1 answer:
Vanyuwa [196]3 years ago
7 0

Answer:

11/24

Step-by-step explanation:

7/8 + 11/12 + 3/4 + x = 3 km

7*3/8*3 = 21 / 24

11*2 / 12 * 2 = 22 /24

3*6 / 4*6 = 18/24

21/24 + 22/24 + 18/24 + x = 3

61 / 24 +  x = 3

x = 72/24 - 61/24

x = 11 / 24

Tim has to run 11/24 of the race

You might be interested in
Given the polynomial x7y³ + 2x5y² - 3x³ - 2x4 -2, its degree is equal to:
cluponka [151]

Answer:

Step-by-step explanation:x7y³ + 2x5y² - 3x³ - 2x4 -2 mathsolve

6 0
3 years ago
Which of the following are identities? Check all that apply
Natasha2012 [34]

Answer:

A, C

Step-by-step explanation:

Actually, those questions require us to develop those equations to derive into trigonometrical equations so that we can unveil them or not. Doing it only two alternatives, the other ones will not result in Trigonometrical Identities.

Examining

A) True

\frac{1-tan^{2}x}{2tanx} =\frac{1}{tan2x} \\ \frac{1-tan^{2}x}{2tanx} =\frac{1}{\frac{2tanx}{1-tan^{2}x}}\\ tan2x=\frac{1-tan^{2}x}{2tanx}

Double angle tan2\alpha =\frac{1 -tan^{2}\alpha }{2tan\alpha}

B) False,

No further development towards a Trig Identity

C) True

Double Angle Sine Formula sin2\alpha =2sin\alpha *cos\alpha

sin(8x)=2sin(4x)cos(4x)\\2sin(4x)cos(4x)=2sin(4x)cos(4x)

D) False No further development towards a Trig Identity

[sin(x)-cos(x)]^{2} =1+sin(2x)\\ sin^{2} (x)-2sin(x)cos(x)+cos^{2}x=1+2sinxcosx\\ \\sin^{2} (x)+cos^{2}x=1+4sin(x)cos(x)

7 0
3 years ago
Read 2 more answers
Find the roots x^2-13x+30=0<br> (numbers only)
Morgarella [4.7K]

Answer:

Find the roots of x^2-13x+30=0 by solving for x

x= 10,3

Step-by-step explanation:

3 0
3 years ago
65pts! plot the vertex and the axis of symmetry of this function:
Mashcka [7]

Answer:

f(x)=(x−3)2−5

Find the properties of the given parabola.

Direction:

Vertex: (3,−5)

Focus: (3,−194)

Axis of Symmetry: x=3

Directrix: y=−214

Select a few x

values, and plug them into the equation to find the corresponding y values. The x

values should be selected around the vertex.

x  y

1   -1

2  -4

3   -5

4   -4

5    -1

Graph the parabola using its properties and the selected points.

Direction:

Vertex: (3,−5)

Focus: (3,−194)

Axis of Symmetry: x=3

Directrix: y=−214

x  y

1   -1

2  -4

3   -5

4   -4

5    -1

4 0
3 years ago
Read 2 more answers
Omg plsss someone help i rly don't get this question!!! TYY
finlep [7]
Ok sorry but I see someone is online can you help
With a science question
4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the fact family for 2, 10, 20
    5·1 answer
  • PLEASE HELP!!!!!!!!!
    12·1 answer
  • Find CD<br> CD = [? ]<br><br> please help??
    5·2 answers
  • Use the discriminant to determine the number and type of solutions to the quadratic equation. Show all work for full credit.
    11·1 answer
  • Which statement describes the rate of change of the following function?
    8·1 answer
  • Something goes from $435.29 to $364.64 what is the decrease​
    5·1 answer
  • I need these all answerd really fast plz
    6·1 answer
  • I need help for math. if someone could explain each of these it would help!
    14·1 answer
  • B<br> C<br> height<br> A<br> Choose 1 answer:<br> A<br> B
    5·1 answer
  • 9x + 7<br> Verbal<br> Expression
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!