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
nlexa [21]
3 years ago
8

HELP PLEASE I WILL GIVE BRAINLIST

Mathematics
1 answer:
Shalnov [3]3 years ago
4 0

Answer:

19

Step-by-step explanation:

it’s the only one within Q3

You might be interested in
A 400 pound metal star is hanging on two cables which are attached to the ceiling. The left hand cable makes a 18° angle with th
notka56 [123]

Answer:

  • left: 123.607 lb
  • right: 380.423 lb

Step-by-step explanation:

By balancing horizontal and vertical forces, we find the cable tensions to be ...

  Ta = W·sin(b)/sin(a+b) . . . . . where W is the weight being held

  Tb = W·sin(a)/sin(a+b)

Where Ta is the tension in the cable that makes an angle of 'a' with respect to the vertical, and Tb is the tension in the cable that makes an angle of 'b' with respect to the vertical.

__

The given angles are with respect to the ceiling, so the angles with respect to the vertical will be their compmements.

<h3>left cable (a)</h3>

  angle 'a' is 90° -18° = 72°

  angle 'b' is 90° -72° = 18°

  a+b = 72° +18° = 90°

  Ta = (400 lb)sin(18°)/sin(90°) = 123.607 lb

<h3>right cable (b)</h3>

  Tb = (400 lb)sin(72°)/sin(90°) = 380.423 lb

_____

<em>Additional comment</em>

The nice expressions for cable tension come from the balance of forces.

  vertical: Ta·cos(a) +Tb·cos(b) = W

  horizontal: Ta·sin(a) = Tb·sin(b)

Solving the horizontal equation for Ta, we get ...

  Ta = Tb·sin(b)/sin(a)

Substituting into the vertical equaiton gives ...

  Tb·sin(b)cos(a)/sin(a) +Tb·cos(b) = W

Multiplying by sin(a) gives ...

  Tb(sin(b)cos(a) +sin(a)cos(b)) = W·sin(a)

Using the trig identity for the sine of the sum of angles, we can rewrite this in the form shown above:

  Tb = W·sin(a)/sin(a+b)

The problem is symmetrical with respect to 'a' and 'b', so the other tension is found by interchanging 'a' and 'b' in the equation:

  Ta = W·sin(b)/sin(a+b)

4 0
2 years ago
A passenger car weighs 4.5 times 10 Superscript 3 units. Which unit of measure was used?
Pepsi [2]
20? I’m not for sure maybe look in the book? That’s the answer I got and it was right
5 1
4 years ago
Read 2 more answers
I need help to find the unknown angle measures.And the equation pls, the problem is down below.
Ivenika [448]

Answer:

Step-by-step explanation:

Corresponding angles equal 180 degrees when added

6x + 3x = 180

9x = 180

x = 20

angle CBD is 60 and angle GFH is 120

3(20) = 60

6(20) = 120

7 0
2 years ago
If point E is the midpoint of and point D is the midpoint of , which expression represents the value of s
iogann1982 [59]

The length of ED is half the length of AB.

<h3>What is the length?</h3>
  • Distance is measured by length.
  • Length is a quantity with the dimension distance in the International System of Quantities.
  • Most measurement systems use a base unit for length from which all other units are derived.
  • The meter is the foundation unit of length in the International System of Units.

Reasons:

The given parameters are;

In ΔABC, point E is the midpoint of AC

The midpoint of BC is the point D

Segment ED = s

Segment CE = p

Segment EA = r

Segment CD = q

Segment DB = t

Segment ED = s

Segment AB = u

Required:

The expression that represents the value of s.

Solution:

CE = 0.5 × AC Definition of midpoint

CD = 0.5 × CB Definition of midpoint

Therefore, we have;

\frac{CE}{AC} =\frac{CD}{CB} =0.5

Therefore, given that ∠C ≅ ∠C, by the reflexive property, we have;

ΔABC is similar to ΔCDE by Side-Angle-Side similarity

Which gives;

\frac{CE}{AC} = \frac{CD}{CB}  = \frac{ED}{AB} =0.5=\frac{1}{2}

ED = s and AB = u which gives;

\frac{ED}{AB}=\frac{s}{u}  =0.5=\frac{1}{2}

\frac{s}{u} =\frac{1}{2}

Which gives:

s=\frac{1}{2} *u

The expression that represents the value of s is; s = one-half u

Therefore, the length of ED is half the length of AB.

Know more about the length here:

brainly.com/question/2217700

#SPJ4

The question you are looking for is here:

If point E is the midpoint of segment AC and point D is the midpoint of segment BC, which expression represents the value of s? triangle CAB, point E is on segment AC between points A and C and point D is on segment BC between points B and C, creating segment ED, CE equals p, EA equals r, CD equals q, DB equals t, ED equals s, and AB equals u s equals p over q s = one half s equals q over p s = 2u

7 0
2 years ago
• How can you tell that a point on the graph is a maximum, a minimum, or neither?
Eduardwww [97]

Answer:

If it is on the maximum, then the y-value of the point cannot be any higher and  still be on the graph of the function. If it is on the minimum, the the y-value of the point cannot be any lower and still be on the graph of the function. If it isn't either the maximum or the minimum, it is neither.

4 0
3 years ago
Other questions:
  • Find the slope of the line whose equation is 7x - 2y = 4. 7/2 -2 4/7
    6·1 answer
  • If the sum of the legs of a right triangle is 49 inches and the hypotenuse is 41 inches, find the length of the other two sides
    10·1 answer
  • Three geometric sequences are given below.
    9·2 answers
  • A caterpillar is trapped in a glass that is 12 inches tall. The caterpillar can climb 3 inches per hour but then it rests for an
    7·1 answer
  • Find the height of the Eiffel Tower from a scale that is 5 inches tall. The scale is 1 inch = 65 meters.
    15·1 answer
  • PLEASE HELP!! WORTH 30 POINTS!! WILL GIVE BRAINLIEST TOO!
    7·2 answers
  • Draw a line parallel to a given line at a distance of 5cm
    9·1 answer
  • What does -23 + (+3) equal?
    15·2 answers
  • Use the drop-down menus to choose steps in order to solve 5m - 8 = 3m + 8 for m.
    6·2 answers
  • Solve the equation by elimination <br> 2x - 5y = -7<br> =<br> -2x + 3y = 1
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!