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
rusak2 [61]
3 years ago
9

Select all the triangles that have an area of 30 square units.

Mathematics
1 answer:
marta [7]3 years ago
6 0

Answer:

A and C

Step-by-step explanation:

Area of ∆ = ½*base*height

Area of figure A:

base = 6

height = 10

Area = ½*6*10 = 3*10 = 30 square units

Area of figure B:

base = 10

height = 8.66

Area = ½*10*8.66 = 5*8.66 = 43.3 square units

Area of figure C:

base = 10

height = 6

Area = ½*10*6 = 5*6 = 30 square units

Area of figure D:

base = 6

height = 8

Area = ½*6*8 = 3*8 = 24 square units

Area of figure E:

base = 3

height = 10

Area = ½*3*10 = 3*5 = 15 square units

You might be interested in
A psychological researcher did a study with a sample of 84 boys and found that the meam length of time that they remained engage
Varvara68 [4.7K]
Sample size= n= 84
sample mean= x = 107 s
population standard deviation =σ= 11.7

As, population standard deviation is given so we use the estimate:
                             x(+/-) z(α/2)(σ/√n)

At 99% Confidence interval means significance level is α=1-0.99= 0.01
So,
α/2=0.005
Now, z at α/2=0.005 
z= 2.576
Now, by putting values 
                               107(+/-)((2.576)(11.7/√84)) 
              ( 107-((2.576)(11.7/√84)), 107+((2.576)(11.7/√84))  )    
               (103.7, 110.288)                      


                                         
4 0
3 years ago
Please help... I'm stuck on number 44 and I can't remember how to do it
Leona [35]
3(x+4)=9
3x+12=9
3x=-3
x=-1

Hope this helps :D
3 0
3 years ago
Read 2 more answers
Pls I need the answer for 3 and 4 and it’s very hard
Elodia [21]
#4 is 47, 48, 49

47+48+49=144
4 0
3 years ago
What are the coordinates of the terminal point determined by t= 11 pi / 3
LuckyWell [14K]

Answer:

B

hope this works!

5 0
3 years ago
Read 2 more answers
How would I solve n/5-3n/10=1/5<br><br>pls help me I am literally failing math.
otez555 [7]

Answer:

53/5

Step-by-step explanation:

since 10 is the denominator of the denominator we can move it to the numerator, giving us 10n/5-3n = 1/5

multiply all sides by 5-3n, giving us 10n = (5-3n)/5

now multiply by 5 to get rid of the final denomintor, 50n = 5-3n

move 3n to the other side 53n = 5, n = 53/5

8 0
3 years ago
Other questions:
  • marc earned $9.37 per hour working in the library .Round his wage to the nearest ten cents. Tell  me how the cookie policy goes.
    6·1 answer
  • Which is an equation of a circle with center (−10, 6) and radius 8?
    9·1 answer
  • A sphere has a volume of V=3600 in cubed in 3. Find its surface area.
    7·1 answer
  • What is the volume in terms of pi?
    15·1 answer
  • Problem Page Last year, Donna had $30,000 to invest. She invested some of it in an account that paid 9% simple interest per year
    10·1 answer
  • How can you rewrite 3(2-b) using the distributive property?
    5·2 answers
  • Is<br> 0, 125 a<br> termatingdecimal?
    7·1 answer
  • Find X and Y !!!!!<br> X=<br> Y=
    9·1 answer
  • I need help please and thank you
    13·2 answers
  • How would you graph y-intercept is 8 and x-intercept is 9
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!