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
Dennis_Churaev [7]
3 years ago
15

Claire runs 10 km in 1 hour. How many kilometers does she run in a half an hour? in 2 1/2

Mathematics
2 answers:
Eddi Din [679]3 years ago
8 0
So she runs 10km/1hr
so ?km/.5hr

do cross multiplication

(10) (0.5) = (1)(x)
5 = x
so in half an hour = 5 km

do the same thing for the 2.5 just put it instead of the 0.5 and solve
Good Luck!

Hope this helps ;)

katrin2010 [14]3 years ago
4 0
If she runs 10 km a hour. then she runs for 2 1/2 hours she runs 25 km. for half an hour she runs 5 km. hope this helps you
You might be interested in
Value expression of 3^5 / 3^3
suter [353]

Answer:

9

Step-by-step explanation:

3^5 = 243

3^3 = 27

243 / 27 = 9

Hope this helps :)

3 0
3 years ago
Find the sum of the first 8 terms in the following geometric series.
padilas [110]

Answer: 43690

Step-by-step explanation:

5 0
3 years ago
Please answer this question for points
alexgriva [62]

Answer:

<h2>y = -2x + -3</h2>

Step-by-step explanation:

Slope-intercept form is y = mx + b

"m" is the slope, how steep the line is.

"b" is the y-intercept, where to graph hits the y-axis.

Check the scale for this grid. Since there are "1" written on the first box after the middle, <u>one square = one unit</u>.

To find "m", use  m = \frac{rise}{run}   between the two dotted points on the graph. The first point is always on the left.

<u>"Rise" means how many squares above</u> the first point the second point is.

Since the second point is below the first point, the number is negative.

<u>"Run" means how many squares to the right</u> the second point is.

m = \frac{rise}{run}          

m = \frac{-2}{1}

m = -2

To find "b", look at where the graph it touching the y-axis.

The y-axis is the vertical line (going from top to bottom).

Count the number of squares from the grid's middle to the graph line.

There are 3 squares.

Since the graph touches below the origin, this is a negative number.

b = -3

In the boxes, you put negative two (-2) and negative three (-3).

* Usually we would simplify the equation to y = -2x - 3.

6 0
3 years ago
5x + 4y = 11<br> 2x + 6y = -7
olga55 [171]

\left\{\begin{array}{ccc}5x+4y=11&|\cdot2\\2x+6y=-7&|\cdot(-5)\end{array}\right\\\underline{+\left\{\begin{array}{ccc}10x+8y=22\\-10x-30y=35\end{array}\right}\ \ \ \ |add\ both\ sides\ of\ the\ equations\\.\ \ \ \ \ \ \ \ \ \ \ -22y=57\ \ \ \ |:(-22)\\.\ \ \ \ \ \ \ \ \ \ \ y=-\dfrac{57}{22}\\\\substitute\ the\ value\ of\ y\ to\ the\ first\ equation\\\\5x+4\left(-\dfrac{57}{22}\right)=11\\\\5x-2\cdot\dfrac{57}{11}=11\ \ \ \ |\cdot11\\\\55x-114=121\ \ \ \ |+114\\\\55x=135\ \ \ \ |:55

x=\dfrac{135}{55}\\\\x=\dfrac{27}{11}\\\\Answer:\ x=\dfrac{27}{11}\ and\ y=-\dfrac{57}{22}\to\left(\dfrac{27}{11},\ -\dfrac{57}{22}\right)

8 0
3 years ago
Solve 15 = 0.5 n check the souution
denis23 [38]
N = 30.

0.5(30) = 15
8 0
3 years ago
Other questions:
  • I really need help with this problem.
    10·2 answers
  • 5/10 × 3 explain how you got the answer then when finish do 4/10 × 4 and explain.
    11·1 answer
  • PLEASE HELP ASAP!!!! WILL GIVE BRAINLIEST TO CORRECT OR FIRST ANSWER!!!!!!
    7·1 answer
  • Which pair of expressions are equivalent? 3 v + 5 minus 9 v + 2 and negative 6 v + 6 Negative 6 n + 3 minus 2 n + 2 and negative
    7·2 answers
  • A painter charges $40 an hour plus a 10% fee if he works weekend hours. If you hire the painter for 6 hours on Saturday, how muc
    10·2 answers
  • Aleks leas common multiples pls?​
    11·1 answer
  • PLEASE HELP!!! This is due today and I don’t understand can someone please tell me.
    11·1 answer
  • Help I need the answers immediately​
    15·2 answers
  • Cosy of a comic book: $3.95 markup: 20%
    14·1 answer
  • PLEASE ASSIST me in this geometry problem!!
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!