Answer:
<h2>
1,190cm²</h2>
Step-by-step explanation:
The Area of a triangle is expressed as 1/2 * base * height. If uma is planning to decorate a blanket with a triangular shape that has a base of 5 centimetres and a height of 7 centimetres, area of the blanket will be expressed as shown;
Area of the blanget = 1/2 * 7 * 5
Area of a blanket = 35/2 = 17.5cm²
If she plans to cut out 68 triangles with these dimensions, the total area will be total number of triangles * area of one triangle i.e 68 * 17.5 = 1,190cm²
Perimeter = 2l + 2w
perimeter = 2(90) + 2(30)
perimeter= 180+60
perimeter= 240 ft
Answer:
The probability that the woman selected does not have red/green color blindness is 0.9945.
Step-by-step explanation:
Let <em>X</em> = a woman has red/green color blindness.
It is provided that, in a certain group of women the rate of red/green color blindness is <em>P</em> (<em>X</em>) = 0.0055.
A complement of an event <em>E</em>, is defined as the event of not <em>E</em>.
The probability of complement of an event <em>E</em> is:
Compute the probability that the woman selected does not have red/green color blindness as follows:
Thus, the probability of the complement of the event of a woman having red/green color blindness is 0.9945.
Answer:
Step-by-step explanation:
The four steps of linear combination method are
1) Rearrange like terms such that they are in the same column.
2) The next step is to decide on which variable you want to eliminate and multiply each row with suitable numbers that would make the coefficient of the variable to be equal and opposite.
3) Add both rows and solve for the other unknown variable.
4) substitute the known variable into any of the equations and solve for the other variable.
4x + 2y = 5
−4x − 5y = 7
We would eliminate x by adding both equations. It becomes
- 3y = 12
y = 12/- 3 = - 4
Substituting y = - 4 into the first equation, it becomes
4x + 2 × - 4 = 5
4x - 8 = 5
4x = 5 + 8 = 13
x = 13/4 = 3.25
