answer.
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
Leno4ka [110]
1 year ago
12

Haruka hiked several kilometers in the morning. She hiked only 666 kilometers in the afternoon, which was 25\%25%25, percent les

s than she had hiked in the morning.
How many kilometers did Haruka hike in all?
Mathematics
2 answers:
skelet666 [1.2K]1 year ago
7 0

The answer is 14 km. I just did the quiz and 14 km was the right answer.

katen-ka-za [31]1 year ago
3 0

Answer:

She hiked 1,554 kilometers in all.

Step-by-step explanation:

Let the hiking kilometers for morning be x

Given that:

Hiking kilometers in afternoon = 666

According to given condition that afternoon kilometers are 25% less than morning:

x = 666 + 25% of x

By simplifying:

x = 666 + 0.25x

x - 0.25x = 666

0.75x = 666

Dividing both sides by 0.75 we get:

x = 666/0.75

x = 888 kilometers

She hiked 888 kilometers in morning

And

Total = 888 + 666 =1554 km

i hope it will help you!

You might be interested in
Ribbon is only sold by the spool. A spool contains 25 yards of ribbon. Shannon needs 58 yards of ribbon to wrap all the presents
ella [17]

Answer:

\boxed{\text{3 spools}}

Step-by-step explanation:

\text{1 spool =25 yd}\\\text{Spools needed } = \text{58 yd} \times \dfrac{\text{1 spool}}{\text{25 yd}} = \text{2.32 spools}\\\\\text{However, Shannon can't buy part of a spool. She must $\textbf{round up}$ to the next integer.}\\\text{Shannon must buy $\boxed{\textbf{3 spools}}$ of ribbon}

6 0
2 years ago
Read 2 more answers
Find the area of the part of the plane 5x + 4y + z = 20 that lies in the first octant.
BlackZzzverrR [31]
This part of the plane is a triangle. Call it \mathcal S. We can find the intercepts by setting two variables to 0 simultaneously; we'd find, for instance, that y=z=0 means 5x=20\implies x=4, so that (4, 0, 0) is one vertex of the triangle. Similarly, we'd find that (0, 5, 0) and (0, 0, 20) are the other two vertices.

Next, we can parameterize the surface by

\mathbf s(u,v)=\langle4(1-u)(1-v),5u(1-v),20v\rangle

so that the surface element is

\mathrm dS=\|\mathbf s_u\times\mathbf s_v\|=20\sqrt{42}(1-v)\,\mathrm du\,\mathrm dv

Then the area of \mathcal S is given by the surface integral

\displaystyle\iint_{\mathcal S}\mathrm dS=20\sqrt{42}\int_{u=0}^{u=1}\int_{v=0}^{v=1}(1-v)\,\mathrm dv\,\mathrm du
\displaystyle=20\sqrt{42}\int_{v=0}^{v=1}(1-v)\,\mathrm dv=10\sqrt{42}\approx64.8074
3 0
2 years ago
0.075km, 7.6m, 77cm, 780mm from smallest to largest
Neko [114]

Answer:

77cm, 780mm, 7.6m, 0.075km

this is the best answer

7 0
2 years ago
If a class of 120 students took the Business math exam and 3/5 passed the test, how many students failed the test?
Harman [31]

Answer:

48

Step-by-step explanation:

120*(5/5-3/5)

120*(2/5)

24*2

48

4 0
2 years ago
When a breeding group of animals is introduced into a restricted area such as a wildlife reserve, the population can be expected
jasenka [17]

Answer:

A. Initially, there were 12 deer.

B. <em>N(10)</em> corresponds to the amount of deer after 10 years since the herd was introducted on the reserve.

C. After 15 years, there will be 410 deer.

D. The deer population incresed by 30 specimens.

Step-by-step explanation:

N=\frac{12.36}{0.03+0.55^t}

The amount of deer that were initally in the reserve corresponds to the value of N when t=0

N=\frac{12.36}{0.33+0.55^0}

N=\frac{12.36}{0.03+1} =\frac{12.36}{1.03} = 12

A. Initially, there were 12 deer.

B. N(10)=\frac{12.36}{0.03 + 0.55^t} =\frac{12.36}{0.03 + 0.0025}=\frac{12.36}{y}=380

B. <em>N(10)</em> corresponds to the amount of deer after 10 years since the herd was introducted on the reserve.

C. N(15)=\frac{12.36}{0.03+0.55^15}=\frac{12.36}{0.03 + 0.00013}=\frac{12.36}{0.03013}= 410

C. After 15 years, there will be 410 deer.

D. The variation on the amount of deer from the 10th year to the 15th year is given by the next expression:

ΔN=N(15)-N(10)

ΔN=410 deer - 380 deer

ΔN= 30 deer.

D. The deer population incresed by 30 specimens.

8 0
2 years ago
Other questions:
  • A Man is redecorating his bedroom .he can choose from 5 paint colors 6 beds and 5 dressers how many ways can he choose to design
    6·2 answers
  • Tim is an elementary school art teacher. His students are sculpting a replica of a shark out of clay. Tim has given them one blo
    12·2 answers
  • Jillana takes a single dose of medication that remains in her body according to the equation r = 200(0.75)d, where r represents
    5·1 answer
  • In a recent​ year, 304 of the approximately​ 300,000,000 people in the United States were struck by lightning. Estimate the prob
    10·2 answers
  • 2.) Bob has two weekend jobs. Last weekend he made a total of $77 after
    14·2 answers
  • Solve 4x-c=k for x ?
    9·2 answers
  • A bank PIN is a string of four digits, each digit 0-9. (a) How many choices are there for a PIN if the last digit must be odd? M
    5·1 answer
  • An open-top bin is to be made from a 15-centimeter by 40-centimeter piece of plastic by removing a square from each corner of th
    10·1 answer
  • In an experiment to determine whether there is a systematic difference between the weights obtained with two different mass bala
    12·1 answer
  • Write (9m) ^4 without exponents.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!