Answer:
1. Change the length of side AB to 2 feet
Step-by-step explanation:
Since both stone pyramid structures are to be similar, the ratio of their corresponding side lengths must be equal. That is:
Since it is said there was an error in side AB, let's assume AB is unknown.
Use the following to find the length of side AB that would be used if she is to make the correction:
PR = 7.5
AC = 2.5
PQ = 6
AB = x
Plug in the values
Cross multiply
Divide both sides by 7.5
AB = x = 2
Therefore, she should change the length of side AB to 2 feet.
There are 1.40 groups of 5/7 in 1.
8 divided by 5/7 is 11 1/5.
Here is the completed table:
Length (cm) Percentage
12 60% of Ehecatl's old hair
4 20% of Ehecatl's old hair
20 100% of Ehecatl's old hair
<h3>How do we carry out division?</h3>
Division is the process of grouping a number into equal parts using another number. The sign used to denote division is ÷. Division is one of the basic mathematical operations.
In order to determine how many groups of 5/7 are in 1, divide 1 by 5/7
1 ÷ 5/7
1 x 7/5 = 7/5 = 1.40
8 ÷ 5/7
8 x 7/5
= 56 / 5
= 11 1/5
<h3>What are the lengths of Ehecatl's hair ?</h3>
The first step is to determine the length of her hair before she cut it
Length of the hair before it was cut = new length / 60%
12 / 0.6 = 20
60% x 20 = 12cm
20% x 20 = 4cm
100% x 20 = 20cm
To learn more about division, please check: brainly.com/question/13281206
#SPJ1
Ocel’s 10x10=100
Bill’s (10 - y) (10 - y)
I don’t know which answer your teacher wants
100 - [(10-y)(10-y)]
100 - (100 -20y + y^2}
20y - y^2
X(2+7+9)=3.6
x(18)=3.6
x=3.6/18
x=0.2
2*0.2 : 7*0.2 : 9*0.2
0.4 : 1.4 : 1.8
0.4kg of nickel
1.4kg of zinc
1.8kg of copper
Hope this helps :)
Answer:
A.) 
or -1.43136... (Decimal Form)
B.) 
Explanation: I inserted image to explain how to solve the second one, but for the first one you can't go any further except writing it in standard form or changing it into a decimal.
Your welcome :3
