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
Mariana [72]
2 years ago
7

The base of a ladder is 2.8m placed away from a tree that is 4.5m tall. The end of the ladder touches the top of the tree. Calcu

late the length of the ladder.
Mathematics
1 answer:
horrorfan [7]2 years ago
4 0

Step-by-step explanation:

Hello all beautiful your day

You might be interested in
Does a hexagon contain rays
professor190 [17]

Answer:

no

Step-by-step explanation:

7 0
3 years ago
An object is launched vertically upward from a 25 foot platform and is modeled by the function s(t)=−16t2+11t+25.
ch4aika [34]

Correct option:

d. 1.64

<h2>Explanation:</h2>

An object is launched vertically upward from a 25 foot platform and is modeled by the following function:

s(t)=-16t^2+11t+25

So this is the equation of a parabola because the object is a projectile so it follows the Projectile Motion.

The object fall back to the ground when s(t)=0 so:

-16t^2+11t+25=0 \\ \\ \\ Using \ quadratic \ formula: \\ \\ t_{12}=\frac{-b\pm \sqrt{b^2-4ac}}{2a} \\ \\ a=-16 \\ \\ b=11 \\ \\ c=25 \\ \\ \\ t_{12}=\frac{-11\pm \sqrt{11^2-4(-16)(25)}}{2(-16)} \\ \\ t_{12}=\frac{-11\pm 41.48}{-32} \\ \\ t_{1}=\frac{-11+ 41.48}{-32}=-0.95s \\ \\ t_{2}=\frac{-11- 41.48}{-32}=1.64s

Since time can't be negative, we only choose the positive value. therefore:

<em>The object fall back to the ground after 1.64 seconds</em>

<em></em>

<h2>Learn more:</h2>

Projectile motion: brainly.com/question/12554459

#LearnWithbrainly

4 0
3 years ago
Solve the equation. <br> 15x^2 – 28x + 5 = 0
stiv31 [10]

Answer:

Step 1: Factor left side of equation.

(5x−1)(3x−5)=0

Step 2: Set factors equal to 0.

5x−1=0 or 3x−5=0

x=

1 /5

or x=

5 /3

8 0
3 years ago
Read 2 more answers
Negative 5 1 half plus 7 3 over 4
erastovalidia [21]

Answer:

2 \dfrac{1}{4}

Step-by-step explanation:

-5 \dfrac{1}{2} + 7 \dfrac{3}{4} =

= -5 \dfrac{2}{4} + 7 \dfrac{3}{4}

= 7 \dfrac{3}{4} - 5 \dfrac{2}{4}

= 2 \dfrac{1}{4}

8 0
3 years ago
In your own words, explain why there is no solution to the following equation:| x-6|= -8 Also, knowing this, how does it help to
solniwko [45]

Answer:

Step-by-step explanation:

So the two lines before and after the expression means absolute value, or modulus of, knowing this, it means that the answer must always yield positive. So if x-6 is positive, it will stay positive, if x-6 is negative, it will turn positive, therefore it can never yield a negative value.

Now im assuming the second question is meant to be absolute value of x-5 is less than 0, because it makes no sense otherwise.

So now knowing that x-5 is always positive, or 0, but this inequality only wants less than 0, this means there are no solutions for the inequality.

5 0
3 years ago
Other questions:
  • If driver A has 145.155 average speed and driver C has a average speed of 144.809 and driver D had a speed between A and C Write
    13·1 answer
  • What’s the area and perimeter
    15·1 answer
  • Determine whether the formula describes y as a function of x. Explain your reasoning. Y=9x+1
    10·1 answer
  • Plz help 20 points answers
    10·1 answer
  • What could be the ordered pairs representing vertices C and D of quadrilateral ABCD so that the new fire department is congruent
    6·1 answer
  • Surface area of a rectangular prism 17cm 15cm 17cm 11cm 16cm??? I need it noww
    7·1 answer
  • Help me plsssssssssssssssssssssssssssss
    6·1 answer
  • A restaurant serves three types of omelettes. Surveys were taken of the last two days of orders and are displayed in the table b
    9·2 answers
  • Explain your answer <br><br> Thank you so much ! <br><br> Will give brainlst
    13·1 answer
  • Criteria are the goals that a design must achieve. They are determined by what you want the cup to do. Criteria for the volume o
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!