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
Novay_Z [31]
3 years ago
11

Uma atleta percorreu cinco oitavos de uma pista e ainda precisa percorrer 75 quilômetros para completar seu percurso . Quantos q

uilômetros a atleta percorrerá no total?
Mathematics
1 answer:
ivolga24 [154]3 years ago
3 0

Answer:

The athlete will run 200 kilometers.

A atleta percorrerá 200 quilômetros no total.

Step-by-step explanation:

She will run x kilometers.

She has already run 5/8 of the distance(5/8 of x), and still needs to run 75 kilometers.

So

\frac{5x}{8} + 75 = x

x - \frac{5x}{8} = 75

\frac{8x - 5x}{8} = 75

3x = 8*75

x = \frac{8*75}{3}

x = 200

The athlete will run 200 kilometers.

A atleta percorrerá 200 quilômetros no total.

You might be interested in
Write a quadratic equation with the given roots. Write the equation in the form of ax^2+bx+c=0 where a b and c are integers
Bas_tet [7]

You haven't provided the required roots, but I can tell you how to do this kind of exercises in general.

If the x^2 coefficient is 1, i.e. the equation is written like x^2+bx+c=0, then you can say the following about the coefficients b and c:

  • b is the opposite of the sum of the roots
  • c is the multiplication of the roots.

So, for example, if we want an equation whose roots are 4 and -2, we have:

  • 4+(-2) = 4-2 = 2 \implies b = -2
  • 4 \cdot (-2) = -8 \implies c = -8

So, the equation is x^2-2x-8=0

If your roots are rational, you can work like this: suppose you want an equation with roots 3/4 and 1/2. You have:

  • \dfrac{3}{4}+\dfrac{1}{2} = \dfrac{3}{4}+\dfrac{2}{4} = \dfrac{5}{4} \implies b = -\dfrac{5}{4}
  • \dfrac{3}{4} \cdot \dfrac{1}{2} = \dfrac{3}{8} \implies c = \dfrac{3}{8}

And so the equation is

x^2 - \dfrac{5}{4} + \dfrac{3}{8} = 0

In order to have integer coefficients, you can multiply both sides of the equation by 8:

8x^2 - 10 + 3 = 0

5 0
3 years ago
(7 x 10^5) ÷(2 x 10²)​
12345 [234]

Answer:

<h2> 3.5 * 10x^{3} </h2>

Expanded Form:

3500

Step-by-step explanation:

Hope this helps!

8 0
3 years ago
Solve the following<br><img src="https://tex.z-dn.net/?f=5x-2%3D%20-9x%2B8" id="TexFormula1" title="5x-2= -9x+8" alt="5x-2= -9x+
OLEGan [10]

Answer:

5x - 2 = (-9x) + 8

5x + 9x = 8 + 2

14 x = 10

x = 10 / 14

x = 5/7

6 0
2 years ago
Read 2 more answers
What is the greatest common facter of 48 and 84​
Snowcat [4.5K]

Answer:12

Step-by-step explanation:

The prime factorization of 84 is 2×2×3×7 . The prime factorization of 48 is 2×2×2×2×3 . . Therefore, the GCF is 2×2×3=12

8 0
3 years ago
Suppose the researcher conducts a survey of a random sample of 25 students at her university and five of them say they want to a
storchak [24]
نيبتيززيت يهيهتيتيتيت يتيتيتتيتيتي يتيتيتتيت
7 0
3 years ago
Other questions:
  • The circumference of circle a is 3 times greater than the circumference of circle b. If the radius of circle a is 12 meters, wha
    15·1 answer
  • Which means the sum of w and 3.4 is greater than or equal to 10.5
    13·1 answer
  • Drag the numbers to order them from least to greatest. 0.9, −2.4, −0.8, 1.6, 0.2
    15·1 answer
  • How to write 999,858,411
    14·1 answer
  • Can someone please help me?!!? I don't know how to do this and I need help right now
    12·1 answer
  • Find the distance between<br> 2-3i<br> And<br> 9+21i
    12·1 answer
  • 2. In the triangle below, NE and KL are perpendicular bisectors. Knowing that the sum of interior angles in
    14·1 answer
  • 3 pounds of gummie bears cost $8.97. <br> What will one pound cost?
    8·1 answer
  • The spinner is divided into 4 equal parts: yellow, green,blue,and red. Dorian says that if you spin the spinner twice, then ther
    15·2 answers
  • Calculate the surface area of the cereal box. 11in 3in 8in
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!