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
AleksandrR [38]
3 years ago
15

A standard paper clip is 1 1/4

Mathematics
2 answers:
Ivahew [28]3 years ago
6 0
Number of paper clips * length per paper clip is total length
Vlad1618 [11]3 years ago
6 0
The line of paper clips would be 93 3/4 inches long
You might be interested in
2x + y - z = -8
lina2011 [118]

Answer:

none of the above

Step-by-step explanation:

im a math expert and none ofe the above makes a11 is to 1

7 0
2 years ago
A firework is launched at the rate of 10 feet per second from a point on the ground 50 feet from an observer. to 2 decimal place
Kazeer [188]

The rate of change of the angle of elevation when the firework is 40 feet above the ground is 0.12 radians/second.

First we will draw a right angle triangle ΔABC, where ∠B = 90°

Lets, assume the height(AB) = h and base(BC)= x

If the angle of elevation, ∠ACB = α, then

tan(α) = \frac{AB}{BC} = \frac{h}{x}

Taking inverse trigonometric function, α = tan⁻¹ (\frac{h}{x}) .............(1)

As we need to find the rate of change of the angle of elevation, so we will differentiate both sides of equation (1) with respect to time (t) :

\frac{d\alpha}{dt}=[\frac{1}{1+ \frac{h^2}{x^2}}]*(\frac{1}{x})\frac{dh}{dt}

Here, the firework is launched from point B at the rate of 10 feet/second and when it is 40 feet above the ground it reaches point A,

that means h = 40 feet and \frac{dh}{dt} = 10 feet/second.

C is the observer's position which is 50 feet away from the point B, so x = 50 feet.

\frac{d\alpha}{dt}= [\frac{1}{1+ \frac{40^2}{50^2}}] *\frac{1}{50} *10\\ \\ \frac{d\alpha}{dt} = [\frac{1}{1+\frac{16}{25}}] *\frac{1}{5}\\ \\ \frac{d\alpha}{dt} = [\frac{25}{41}] *\frac{1}{5}\\   \\ \frac{d\alpha}{dt}= \frac{5}{41} =0.1219512

= 0.12 (Rounding up to two decimal places)

So, the rate of change of the angle of elevation is 0.12 radians/second.

5 0
3 years ago
Find the measures of two complementary angles, ÐA and ÐB, if mÐA = (7x + 4)° and mÐB = (4x + 9)°. Measure of angle A = ... Measu
Westkost [7]

Answer:

The measure of angle A is 53 degrees

The measure of angle B is 37 degrees

Step-by-step explanation:

Here in this question, we are interested in calculating the measure of the two angle.

When how angles are complementary, it means the sum of both equals 90 degrees

mathematically ;

(7x + 4) + (4x + 9) = 90

7x + 4x + 4 + 9 = 90

11x + 13 = 90

11x = 90-13

11x = 77

x = 77/11 = 7

The measure of angle A = 7x + 4 = 7(7) + 4 = 49 + 4 = 53 degrees

The measure of B = 4x + 9 = 4(7) + 9 = 28 + 9 = 37 degrees

3 0
3 years ago
1/8-(-5+3/4)=x+(-1/4)
-BARSIC- [3]

Answer:

x = 37 /8

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
I don't know how to do this math problem-
kifflom [539]

Answer:

cool thats nice

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Quadrilateral ABCD has vertices at A(-2, -4), B(1, -1), C(-2, 2) and D(-5, -1). What is the name of the figure?
    5·1 answer
  • Plzz help I will give brainiest
    6·1 answer
  • write the decomposition that helps us and then round the given place value draw number lines to explain your thinking circle
    13·1 answer
  • Write the slope-intercept form of the equation of the line through the given points.
    13·1 answer
  • Jessica is a custodian at Arco Arena she waxes 20m squared of the floor in 3/5 of an hour Jessica waxes the floor at a constant
    11·1 answer
  • 2 times the sum of a number and 9 equals 4​
    11·1 answer
  • A circle is shown graphed below whose radius is 10 inches. An arc is traced from point A to point B with a
    12·1 answer
  • PLEASE HURRY I HAVE 5 MINUTES LEFT
    9·1 answer
  • What is 0.0071 × 0.34
    11·2 answers
  • DIRECTIONS: Use this information to answer Parts A and B.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!