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
vovangra [49]
3 years ago
8

The table gives information about the heights, in cm, of some children.

Mathematics
1 answer:
marusya05 [52]3 years ago
6 0
The mean height would be 155
You might be interested in
7.
Alenkinab [10]

Answer:

the new area is 1% smaller.

Step-by-step explanation:

the area of a rectangle is length times breadth.

let's call them a and b

Area = a × b

now, a is increased by 10%. that means it is multiplied by 11/10.

because 100% means the whole thing, 1% means a 1/100th part of the whole. and 10% then means 10 times the 1/100th part of 10 × 1/100 = 10/100 = 1/10

if then simmering increases by 10% it means that it is the original 100% plus 10%.

so, it is 100/100 + 10/100 = 10/10 + 1/10 = 11/10

therefore the new length is

a(new) = a(old)×11/10

in exactly the same way, when the breadth is reduced by 10% we get then

breadth(new) = breadth(old)×9/10

so, Area(new) = a(new)×b(new) = a(old)×11/10 × b(old)×9/10

remember, Area(old) = a(old)×b(old)

so, Area(new) = a(old)×b(old) × 11/10 × 9/10 =

= Area(old) × 11/10 × 9/10 =

= Area(old) × 99/100

that means the new area has lost compared to the old area 1/100th of its size. 1/100th = 1%

4 0
3 years ago
Jillian exercises 5 times a week. She runs 3 miles each morning and bikes in the evening. If she
schepotkina [342]

Answer:

The answer is:   " 9 mi. "

Step-by-step explanation:

1 week = 7 days

Total exercise:  30 mi/ wk.

3 mi * 7 = 21 mi. / wk running.

How many miles per week biking?

Assuming that her exercise is strictly:  1) running; and 2) biking:

30 mi  -  21 mi. =  9 mi.

_____________________________________________

5 0
2 years ago
I neeed help I’ll give brainlist plzzz asap
mariarad [96]

Answer: 2nd, 4th, and 5th options

Step-by-step explanation:

The x-intercept is where the graph meets the x axis line and is also known as being the roots/zeros of an expression. hope this helps

4 0
2 years ago
Find the smallest positive integer k such that 3240/k is a square number
sashaice [31]

Answer:

10

Step-by-step explanation:

First, factorize the number 3,240:

3,240=2\cdot 1,620=2\cdot 2\cdot 810=2\cdot 2\cdot 2\cdot 405=2\cdot 2\cdot 2\cdot 2\cdot 5\cdot 81=2^3\cdot 5\cdot 9^2

So,

3,240=2^2 \cdot 2\cdot 5\cdot 9^2=18^2\cdot 10

Now consider the fraction

\dfrac{3,240}{k}=\dfrac{18^2\cdot 10}{k}

If k = 10, then

\dfrac{3,240}{k}=\dfrac{18^2\cdot 10}{10}=18^2

is a square number.

For all k < 10, the fraction tex]\dfrac{3,240}{k}[/tex] is not a square number (this follows from factorization).

Or you can simply check the values of the fraction for all k < 10:

  • k = 1, \dfrac{3,240}{1}=3,240 is not a square number;
  • k = 2, \dfrac{3,240}{2}=1,620 is not a square number;
  • k = 3, \dfrac{3,240}{3}=1,080 is not a square number;
  • k = 4, \dfrac{3,240}{4}=810 is not a square number;
  • k = 5, \dfrac{3,240}{5}=648 is not a square number;
  • k = 6, \dfrac{3,240}{6}=540 is not a square number;
  • k = 7, \dfrac{3,240}{7} is not a square number;
  • k = 8, \dfrac{3,240}{8}=405 is not a square number;
  • k = 9, \dfrac{3,240}{9}=360 is not a square number.
5 0
3 years ago
Find the area of the figure . Sides meet at right angles .
AlexFokin [52]

Answer:

49,152

Step-by-step explanation:

top side=12ft

5 bottom sides=4ft each

2 L,R sides=2ft each

= 12×4×4×4×4×4×2×2

= 49,152

3 0
2 years ago
Read 2 more answers
Other questions:
  • A train leaves Little​ Rock, Arkansas, and travels north at 85
    8·1 answer
  • 1. The temperature at 2:00 a.m. was −12°. At noon, the temperature had risen 16°. At 4:00 p.m., the temperature had dropped 8°.
    8·1 answer
  • 1/1.5 = 1/2.0 + 1/c<br><br><br><br> find c and please please show all your work
    10·1 answer
  • PLZZ help ZOOM IN THE SEE IT CLEAR
    10·2 answers
  • Two cars start from the same place driving at the same rate, one heading north and the other heading east. After two hours the c
    9·2 answers
  • A multiple regression model involves 5 independent variables and a sample of 10 data points. If we want to test the validity of
    10·1 answer
  • 3х – 10 y = 14 3х - 9y = 15​
    11·1 answer
  • Find x. Round your answer to the nearest tenth of a degree. (marking BRAINLEST)​
    9·1 answer
  • Please solve<br> -5+(-8) step by step thank you!!
    11·2 answers
  • The ratio of the measures
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!