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
Romashka [77]
1 year ago
9

Identify the percent of change as an increase or decrease. Then find the percent of change. Round to the nearest tenth of a perc

ent, if necessary. 2/5 to 4/5
(please show your work if you can :D)
Mathematics
1 answer:
stealth61 [152]1 year ago
3 0

Answer:

Step-by-step explanation:

Increase

Increase = \dfrac{4}{5}-\dfrac{2}{5}=\dfrac{2}{5}

Increase percentage = 2/5 out of 2/5 * 100

                                    =\dfrac{2}{5}*\dfrac{5}{2}*100

                                     = 100 %

                                   

You might be interested in
Please help!! I have tried it on my own and I am stuck
elena55 [62]

Answer:

1. 23.59 feet

2. 32.9°

Step-by-step explanation:

1. See the diagram attached.

The man is 11 feet distance from the bottom of the tree.

And the angle of elevation from the man to the top of the tree is 65°.

Now, we need to approximate the height of the tree,

Using the trigonometry, we can write  

\tan 65^{\circ} = \frac{\textrm {Height of the Tree}}{\textrm {Base Distance}} = \frac{h}{11}

⇒ h = 11 tan 65° = 23.59 feet (Approx.) (Answer)

2. See the diagram attached.

From the given right triangle the hypotenuse is 25 feet and the base is 21 feet.

And the angle between the hypotenuse and the base is the pitch of the ram of a NASCAR turn.

Using trigonometry, we can write  

\cos \theta = \frac{\textrm {Base}}{\textrm {Hypotenuse}} = \frac{21}{25}

⇒ \theta = \cos^{-1}(\frac{21}{25}) = 32.9^{\circ} (Answer)

8 0
2 years ago
Three scholars each brought bags of skittles at the store that had exactly the same amount in each. Genesis ate 3/6 of a bag of
vlada-n [284]

Answer:

7/6

Step-by-step explanation:

add all numerators together

8 0
3 years ago
A study was conducted on dolphins born in 2016 in a certain region of the ocean. Ten of the 250 dolphins studied were born with
amm1812

Answer:

25,000

Step-by-step explanation:

i think because 10 times 100 gets 1000 so now you have to do 250 times 100 to get 25,000

4 0
2 years ago
Read 2 more answers
A town's employment statistics show that 855 of its residents were unemployed last month. This is a decrease of 25% from the pre
Leona [35]
Decrease of 25% means only 855 people? Okay, so you want to backtrack. If you divide by 25% you’re going to get what it was for a 75% decrease. So divide by .75 instead. 855/.75 = 1140 unemployed residents last month
6 0
1 year ago
Find the area of the shape shown below.
hichkok12 [17]

Answer:

26.75 units ^2

Step-by-step explanation:

Since the shape is complex, divide it into 3 right angled triangles and one square. Find the area of these individual shapes first, then fin the sum of these area to calculate the ultimate area of e complex shape:

Triangle 1 = 1/2 x 2 x 5 = 5 units ^2

Triangle 2 = 1/2 x 2 x 2 = 2 units ^2

Triangle 3 = 1/2 x 3.5 x 9 = 15.75 units ^2

Square = 2 x 2 = 4 units squared.

Now add all these up 15.75 + 2 + 5 + 4 = 26.75 units squared.

Hope this helps

6 0
3 years ago
Other questions:
  • Can someone please help
    7·1 answer
  • A system of equations is shown below. Find the solution by using substitution.
    15·1 answer
  • A building was insured for $7,500. The insurance cost $.25 per $100. What was the amount of the premium
    12·2 answers
  • Finding the Vertex<br> What is the vertex of the quadratic function f(-x) = (x - 3)(x - 2)?
    13·1 answer
  • A math club has 100 members. 60 members are boys and the rest are gins What is the ratio of boys lo ALL club members?​
    12·2 answers
  • Hey yall join this kahoot: 1088134 its j random
    11·2 answers
  • Which graph shows a dilation
    9·1 answer
  • Answer this please.!
    6·1 answer
  • Cary calculated the surface area of a box in the shape of a rectangular prism. She wrote the equation 148 = 2 (6w + 6h + hw) to
    12·1 answer
  • Steve sells vacuum cleaners door to door. He earns a base salary of $500 plus $100 for every vacuum cleaner he sells. Steve also
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!