C "<span>David’s equation is correct, because their spending will be multiplied by the number of months and then subtracted from their savings"</span> is the correct answer
Answer:
100 in²
Step-by-step explanation:
Since the figures are similar
the linear ratio of sides = a : b , then
ratio of areas = a² : b²
ratio of sides = 15 : 21 = 5 : 7
ratio of areas = 5² : 7² = 25 : 49
let the area of the smaller figure be x then by proportion
= 
( cross- multiply )
49x = 4900 ( divide both sides by 49 )
x = 100
Area of smaller figure is 100 in²
Answer:
l+m = 180°{being co-interior angle}
Step-by-step explanation:
Answer:
Can complete a work in 12 days working 8 hours a day Q can complete the same work in 8 days working 10 hours a day if both p and q work together working 8 hours a day in how many days?
Step-by-step explanation:
Question
Which combination of transformations can you use to show that one shape is congruent to another?
A. dilations and reflections
B. reflections and stretches
C. rotations and translations
D. reflections, dilations, and translations
E. rotations, translations, and dilationsANSWER -
ANSWER -
The correct answer to this is:
ROTATIONS AND TRANSLATIONS
Reflection and rotation can also be used but since their both grouped with dilations, they can't be used. When dilation is used, the size of the shape is changed and congruence won't be possible anymore . That's why the answer is the first option.
