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joja [24]
3 years ago
14

please help me with these, show work or type how to do it ! Thank u, and yes I know they are wrong :/

Mathematics
1 answer:
mojhsa [17]3 years ago
5 0
Question 8:

Steps:
1. Find the area of the 2 triangles at both end.
2. Find the lateral surface area (that is, 3 rectangles)
3. Add them up.

Step 1:
Area of triangle = 1/2 x base x height
Area of 1 triangle = 1/2 x 4 x 5.7 = 11.4 m²
Area of 2 triangles = 11.4 x 2 = 22.8 m²

Step 2:
Area of the lateral surface area = perimeter of the triangle x height
Area of the lateral surface area = (4 + 7 + 5.7) x 8.6 = 143.62 m² 
 
Step 3:
Total surface area = 22.8 + 143.62 = 166.4 m² (nearest tenth)

Answer: 166.4 m²

Question 9:

Steps:
1. Find the area of the square base.
2. Find the area of the 4 triangles.
3. Add them up.

Step 1:
Area of the square = 8 x 8 = 64 cm²

Step 2:
Area of 1 triangle = 1/2 x 8 x 15.3 = 61.2 cm²
Area of 4 triangles = 61.2 x 4 = 244.8 cm²

Step 3:
64 + 244.8 = 308.8 cm²

Answer: 308.8 cm²

Question 10:

Volume = Length x Width x Height 
Volume = 1 1/2 x 2 1/2 x 8 = 30 ft³

Answer: 30 ft³
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kondaur [170]
Answer: D. $3,450
Given: 2,500 shares of a stock bought for $8 a share
<span>Probabilities:  the stock will rise to a value of $32 a share is 22%</span>  <span>                                                the stock will fall to $3 a share is 78%</span>
<span>Question: What is the expected value of the investor’s profit from buying the stock?</span>
Solution: (22%(32-8)-78%(8-3))2500
                (.22(24)-.78(5))2500
                (5.28-3.9)2500
                (1.38)2500
                3450
8 0
3 years ago
Find the slope of the line that passes through the two points (0,1) and (-8, -7)
Crazy boy [7]

Answer:

<h3>The slope of the line is 1</h3>

Step-by-step explanation:

The slope of a line is found by using the formula

m =  \frac{y2 - y1}{x2 - x1}

where

m is the slope and

(x1 , y1) and ( x2 , y2) are the points

Substituting the above values into the above formula we have

Slope of the line that passes through

(0,1) and (-8, -7) is

m =  \frac{ - 7 - 1}{ - 8 - 0}  =  \frac{ - 8}{ - 8}  = 1

<h3>The slope of the line is 1</h3>

Hope this helps you

5 0
3 years ago
Find the volume for the regular pyramid.<br><br><br><br> V =
mylen [45]
The volume is given by:
 V = L * Apb * h
 Where,
 L: side of the base
 Apb: apothema of the base
 h: height
 Substituting we have:
 V = (4) * ((root (3) / 2) * 4) * (6)
 Rewriting we have:
 V = (4) * ((root (3) / 2) * 4) * (6)
 V = 96 * (root (3) / 2)
 V = 48 * root (3)
 Answer:
 
V = 48 * root (3)
7 0
3 years ago
Read 2 more answers
What is (1/4) / (6/7)<br> Please don’t just tell me the answer, please review the steps.
lbvjy [14]

Answer:

7/24 Is The Answer!

Step-by-step explanation:

Division of fractions is equivalent to multiplication by the reciprocal of the second fraction:

1/4 Divided by 6/7 = 1/4 ₓ 7/6

Once rearranged, multiply all of the numerators by each other. Do the same with the denominators and form a new fraction with these values:

1/4 times 7/6 = 7/24

The result Is

1/4 divided by 6/7 = 7/24

6 0
3 years ago
The answer to this Pythagorean problem
Karolina [17]
The correct answer is 20 because if you solve A=hbb 1=5 8 2=20 Hope this helps! ;D
3 0
3 years ago
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