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
Zina [86]
3 years ago
10

This is hard I need help

Mathematics
1 answer:
Andreyy893 years ago
4 0

Answer:

  • 140.22 ft²

Step-by-step explanation:

Surface area is the sum of areas of 4 triangles.

<u>Each triangle has:</u>

  • b = 9 ft, h = 7.79 ft

<u>Area of each triangle:</u>

  • A = 1/2bh
  • A = 1/2*9*7.79 = 35.055 ft²

<u>Surface area:</u>

  • S = 4*35.055 = 140.22 ft²
You might be interested in
Someone help me please:)
IRISSAK [1]
Im not that good with these types of problems but i think it is b if my math is correct.
6 0
3 years ago
Martina is currently 10 years older than her cousin Joey. In 3 years she will be 3 times as old as Joey. Use this information to
chubhunter [2.5K]

Answer:

m = j + 10

m + 3 = 3x

Step-by-step explanation:


8 0
3 years ago
How can 17/20 and 7/4 make a sum of 9/10
Anika [276]

Answer:

the answer is \frac{35}{20}

Step-by-step explanation:

You have to find the common denominator in order to get the sum.

multiply 5 to \frac{7}{4} and you get \frac{35}{20}

then to double check the sum, subtract it.

\frac{35}{20}-\frac{17}{20}=\frac{9}{10}

hope this make sense :/

6 0
3 years ago
Which group of three squares will form a right triangle when<br> joined at their vertices?
Ilia_Sergeevich [38]

Answer:

Option ?) 17 cm, 15 cm, 8 cm

<em>The assignment should have </em><em>four options</em><em> to choose from, but there is only a picture of two. </em>

Step-by-step explanation:

<em>None of the squares </em><em>shown</em><em> form a right triangle. To determine if sides form a right triangle, you use </em><em>this</em><em> formula:</em>

a²+b²=c²

<em>We are given two options in the picture.</em>

Option A) 18, 10, and 8.

Option B) 12, 9, and 6.

<em>So, now we need to apply the formula:</em>

Option A)

║8² + 10² = 18²

  ↓

║64 + 100 = 324

  ↓

║FALSE

Option B)

║6² + 9² = 12²

  ↓

║36 + 81 = 144

  ↓

║FALSE

<em>Both of these options are false.</em><em> But, I decided to look up this assignment to check my answer. It turns out, there are </em><em>4 options</em><em>, and you only had a picture of two. So, what's the answer?</em>

<em />

<em>There is an answer choice that shows 3 squares with the lengths of 17 cm, 15 cm, and 8 cm. </em><em>This is the correct answer</em><em>.</em>

<em />

<em>For proof, let's apply the formula:</em>

Option ?)

║8² + 15² = 17²

  ↓

║64 + 225 = 289

  ↓

║TRUE

<em>[Since the option isn't shown, I'll put a '?' so there is no confusion]</em>

8 0
2 years ago
Find the area of the shaded region round to the nearest tenth
Alenkinab [10]

Answer: 818.4

Step-by-step explanation:

Using the area of a sector formula, we get the area of the entire sector is (\pi)(27.8^{2})\left(\frac{150}{360} \right).

Using the formula A=\frac{1}{2} ab \sin C, we get the area of the triangle is \frac{1}{2}(27.8)(27.8)(\sin 150^{\circ}).

So, the area of the shaded sector is (\pi)(27.8^{2})\left(\frac{150}{360} \right)-\frac{1}{2}(27.8)(27.8)(\sin 150^{\circ}) \approx \boxed{818.4}

6 0
2 years ago
Other questions:
  • GIVEN: ab perpendicular to BC AND DC PERPENDICULAR TO BC<br>AC = BD<br>PROVE:AB =DC <br><br>Proofs
    6·2 answers
  • You earn $100 plus 1/5 of your sales each week. What dollar amount of sales do you need this week to earn $600?
    8·1 answer
  • The school cafeteria ordered macaroni and cheese for their monthly supplies. In the past 2 months they ordered 178 and 224 boxes
    15·1 answer
  • What values of b make it an exponential growth function
    13·2 answers
  • Use long division to rewrite the following expression (18x^2+5x+5)/(6x^2-4x+1)
    15·1 answer
  • What are the solutions to the equation (x-2)(x + 5) = 0?
    10·1 answer
  • every evening jenna empties her pockets and puts her change in a jar. At the end of the week she counts her money. One week she
    5·1 answer
  • What’s the square root of 108 a to the 7th power b to the 5th power
    15·1 answer
  • Write the function f(x)=-3x^(2)+18x-24 in intercept form
    15·1 answer
  • 4 people stacked 40 pizzas . Ronnie stacked 0.25 of the pizzas and Mack stacked 9 outa the 40 and Kim stacked 35% so how many di
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!