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
natulia [17]
2 years ago
6

Pls help me thank you

Mathematics
1 answer:
aleksley [76]2 years ago
3 0

Answer:

140.4ft^2

Step-by-step explanation:

since all four sides are equilateral triangles, you only need to find one triangle and multiply by 4.

area of triangle = 0.5×base×height = 0.5×7.8ft×9ft =35.1ft^2

surface area of pyramid= 35.2ft^2 × 4 = 140.4ft^2

You might be interested in
Identify a, b and c in the quadratic equation.<br><br> -x2 + 31x + 7 = 0
Anna [14]

Answer:

a is -1

b is 31

c is 7

Step-by-step explanation:

-x^2+31x+1=0

ax^2+bx+c=0

4 0
3 years ago
I really need help with this, my teacher doesn't really teach and I'm stumped again.​
yarga [219]

Answer:

JMK = 54

JKH = 126

HLK = 90

HJL = 27

LHK = 63

JLK = 27

Step-by-step explanation:

Just use 180 for total angles in each triangle. Vertical angles mean the opposite to 126 is 126 and the other two that make up the inner vertices are (360- 126*2)/2 = 54

So, 126, `16, 54 , 54 are the inner angles in the circle. Just go from there.

5 0
3 years ago
X4+18=11x2<br> What's the answer to this?
aleksandrvk [35]
4x + 18=22
4x=22-18
4x=4
x=4/4
x=1
4 0
3 years ago
Read 2 more answers
Determine two pairs of polar coordinates for (3,-3) when 0
Xelga [282]

The two pairs of polar coordinates for the given point (3, -3) with 0° ≤ θ < 360° are (3√2, 135°) and (3√2, 315°).

<h3>What is a polar coordinate?</h3>

A polar coordinate is a two-dimensional coordinate system, wherein each point on a plane is typically determined by a distance (r) from the pole (origin) and an angle (θ) from a reference direction (polar axis).

Next, we would determine the distance (r) and angle (θ) as follows:

r = √(3² + (-3)²)

r = √(9 + 9)

r = 3√2.

θ = tan⁻¹(-3/3)

θ = tan⁻¹(-1)

θ = 3π and 7π/4 (second and fourth quadrants).

Converting to degrees, we have:

θ = 135° and 315°.

Read more on polar coordinates here: brainly.com/question/3875211

#SPJ1

Complete Question:

Determine two pairs of polar coordinates for the point (3, -3) with 0° ≤ θ < 360°

5 0
2 years ago
What are some examples of the top exports from Japan and Germany
aleksley [76]

Answer:

nukes, weapons, and mres, and other foods and packing goods( for germany it is voca

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • Service Costs are part of maintaining your car. It's that time again. You will need an oil change costing $45, four new tires co
    14·1 answer
  • A company pays each of its two office employees each Friday at the rate of $120 per day for a five-day week that begins on Monda
    6·1 answer
  • at old oak farm, there are chicken and horses. there are 120 legs and 48 heads altogether. how many horses and how many chickens
    5·2 answers
  • Volume for 8 x 2 x 4
    7·2 answers
  • What is the slope of this line enter the answer as a fraction in simplest term
    5·1 answer
  • Help please on this !!!!
    12·1 answer
  • Write the slope-intercept form of the given line. Include your work in your final answer.
    12·1 answer
  • What is this: −27 ÷ 3?<br><br> Answer in numbers plz.
    11·2 answers
  • Apple pies cost $5.75 each and cherry pies cost $6.50 each.Susan bought nine pies for a total cost of $53.25.There is no tax cha
    8·1 answer
  • (3x − 1) − 2.75(x + 2)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!