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
harkovskaia [24]
3 years ago
8

Please answer the following questions​

Mathematics
1 answer:
Vlada [557]3 years ago
5 0

Step-by-step explanation:

sorry I can only explain as there are no labels to each diagram

The first diagram is single and can solved using triangular formular given as 1/2 ×base × height

A = 1/2 × 5 × 12

A = 30cm^2..

as for the second one...it consist of 2 diagrams which will be solved separately before adding ...it can simply be done using Pythagoras theorem..

To get the smaller part ...out tita is 45degrees while our adjacent is 4 and opposite is x we are to find x which is the height...

using SOH CAH TOA...

WE HAVE TAN45= opp/adj

Tan45= x/ 4

Tan 45 =1 ...so

1 = x/ 4

and x= 4 ...

so...having our height as 4 and base as 4 ..

Area of smaller triangle become 1/2 × 4 × 4

A = 8cm^2 ...

......SOLVING FOR THE SECOND DIAGRAM ..

WE HAVE the height as ( dotted spot + undotted spot ) = 4 + 4 = 8cm

and our base can be gotten from

Tan45 = opp / adj

1 = 8/x ..

x = 8cm ....so the base is 8 and the height is 8

..

The Area becomes 1/2 × 8×8 = 32cm ...

Total area becomes 32cm + 8cm = 40cm^2

You might be interested in
This line graph shows the temperature in London over a period of time.
VLD [36.1K]
The temperature in London at 2pm is 14°C
7 0
2 years ago
Read 2 more answers
What is the fraction for five over two
nignag [31]

Answer:

So normally you would say it as

                  \       /

                <em>2 and 1/2</em>

                  /       \

<em>(2 1/2)</em>

<em></em>

*eliza*

<em></em>

<em></em>

3 0
3 years ago
Simplify the following expressions. Put your a<br> (3x³-5x² - 7+ 4x4) + (9x4 - 10x² - 5x³ + 3) =
leonid [27]

first we need to get rid of the ( ) so that we can see what the question really says

(3x³-5x² - 7+ 4x4) + (9x4 - 10x² - 5x³ + 3)

= 3x³-5x²-7+4x⁴+9x⁴-10x²-5x³+3

now all we need to do is add up the numbers with the same x's

<em>3x³</em>-5x²-7<u>+4x⁴+9x⁴</u>-10x²<em>-5x³</em>+3

= 13x⁴-2x³-15x²-4

6 0
2 years ago
A local television station for a city with a population of 500,000 recently conducted a poll where they invited viewers to call
Scilla [17]

Answer:

b. Invalid, because the sample may not be representative of the population.

Step-by-step explanation:

A sample of around 10% of the population is needed to be representative.

In this question:

We have a population of 500,000, and a sample of 10,000.

10,000/500,000 = 1/50 = 0.02 = 2% of the population, so not representative, and option b is correct.

8 0
2 years ago
Can someone please help me am failing
vichka [17]
All together it equals (of the number of hours he does in a week)
45 because 6 plus 9 is 15 and 15 multipled by 3 is 45 makes sense becuase .. 6 +3 is 9 and 9 +9 is 18 2 weeks equals 14 days 18 subtracted by 14 equals 2 which 45 subtracted by 2 is 43 and that's the esact number of hours he works 43 in a week.
7 0
3 years ago
Other questions:
  • Ozzie weighs 1 lbs. Slugger weighs 10 lbs. And Charlie weighs 29 lbs. They are all dogs. Add all the lbs and times it by 15 and
    12·1 answer
  • Which of these is an equation? 8t+4=76 8t+4 8z 8+4
    5·1 answer
  • Consider the curve C parametrized by x = −1 + 7 sin t and y = 1 2 − 7 cos t for −π ≤ t ≤ 5π. Then C is a circle of radius with c
    13·1 answer
  • Anyone know this at all?
    14·1 answer
  • Which of the following has no solution?
    13·2 answers
  • The number of cookies Natalie can bake varies directly with the time she
    5·2 answers
  • Pls help me with this im stuck...
    8·1 answer
  • Which expression represents the value of the series below?<br> 3+ 7 + 11 + 15 + ... + 1,671
    9·1 answer
  • I try to look this up and people said yes or no I just need a straight answer
    15·1 answer
  • Least to greatest<br> .<br> .<br> .<br> Please and thank you &lt;3
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!