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
ki77a [65]
3 years ago
15

(Press this if you don't see it) I need help on number six and seven.

Mathematics
1 answer:
KIM [24]3 years ago
5 0
For number six, the sail is 3 ft tall.

Base x Height x (1/2) = a
2.5 x 3 x (1/2) = 3.75
7.2 x (1/2) = 3.75
<span>3.5 = 3.5 </span>
You might be interested in
Ralph is painting the barn below, including the sides and roof.  He wants to know how much paint to purchase. 
grandymaker [24]
PART A

The barn is constructed by the following 2D shapes

Two triangles of height = 4' and base = 20'
Area = 2 × (0.5×4×20) = 80

Two rectangles of length = 20' and width = 15'
Area = 2 × 20 × 15 = 600

Two rectangles of length = 45' and width = 15'
Area = 2 × 45' × 15' = 1350

One base of length = 45' and width = 15'
Area = 45 × 15 = 675

Two rectangles on each on one side of the roof. We have the length = 45'  but not the width. We can work out the width by using Pythagoras theorem

w² = 4² + 10²
w² = 16 + 100
w² = 116
w = √116 = 10.77

Area of the two rectangles on the roof part is = 2 ×10.77 × 45 = 969.33

Total area to paint = 969.33+675+1350+600+80 = 3674.33 ≈ 3700 (to the nearest hundreth)


PART B

Numbers of paint cans needed = 3700 ÷ 57 = 64.9 ≈ 65 cans

PART C

Total cost of paint = 65 × 23.50 = $1527.50

PART D

The barn is constructed by a cuboid and a rectangular prism

V of cuboid = length × width × height
V of cuboid = 20 × 45 × 15
V of cuboid = 13500

V of triangular prism = Area of cross section × depth
V = [0.5×4×20] × 45
V = 1800

Total volume = 1800 + 13500 = 15300


7 0
3 years ago
Evaluate (solve) the power: 2^9
german

Answer:

The corrext answer is, 512.

3 0
3 years ago
Read 2 more answers
A machine can make 56 parts in 4 hours.It can also make 70 parts in 5 hours. Write an equation that relates the number of parts
ira [324]

Answer:

126 parts in 9 and a half hours

Step-by-step explanation:

56 parts in 4 hours

that means 56 parts in 240 mins

9 hours and 30 minutes in minutes is 570 minutes

56m parts:240 mins

                 540 mins

to get to 540 from 240, you multiply by 2.25.

you can work this out by doing 540 divided by 240

now, multiply 56 by 2.25.

the answer is 126 parts

5 0
3 years ago
If equal amounts are added to the numerator and the denominator of the current ratio, the ratio will always:
Marta_Voda [28]

Answer:

Increase?

Step-by-step explanation:

Because think about it let's use 1/2 as an example.

1/2 equals .5 now lets add 2 to both the numerator and denominator

3/4 is the result and it also equals .75 which is larger than .5 so that's why the answer is increase.

and u can keep on going on with the method

4/5=.8

7 0
3 years ago
Write 2,670,000 in scientific notation.
hjlf
Scientific notation is just rewritten so that it has a single digit in front of the decimal and that this is multiplied by a power of ten that makes this decimal equal to the original number.

In this case we have 2.67 million.  Well a million is equal to 10^6, because 10*10*10*10*10*10=one million.

So in scientific notation you would write:

2.67X10^6
5 0
3 years ago
Other questions:
  • 3r^2-8r-28=0 <br> Solve with quadratic formula
    11·2 answers
  • An amount of $48,000 is borrowed for 12 years at 3% interest, compounded annually. If the loan is paid in full at the end of tha
    7·1 answer
  • Which statements are true about the fully simplified product of (b-2c)(-3b c) ?
    11·1 answer
  • Which function in vertex form is equivalent to f(x) = 4 + x2 – 2x?
    14·2 answers
  • Write an equation of the line below.
    9·1 answer
  • 3/11 ÷ 3/11<br>and <br>9/10 ÷ 3/5<br><br>PLZ HELP ME<br>​
    6·2 answers
  • 4 (2y + 1)<br> Answer for this question
    15·1 answer
  • Graph the function:<br> y = 5(3)
    13·1 answer
  • PLEASE HELP I NEED THIS ASAP.
    10·2 answers
  • Plz help me solve this.<br><br> <img src="https://tex.z-dn.net/?f=x%5E%7B2%7D%20%3D%202x%20-%205" id="TexFormula1" title="x^{2}
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!