A change from 20 to 25 represents a positive change (increase) of 25% Percent change = [(20 - 25) / 20] x 100 = 25 % (increase)Where: 20 is the old value and 25 is the new value. In this case we have a positive change (increase) of 25 percent because the new value is greater than the old value.
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Answer:
You can buy 3 items for $6, how
much will it cost for 10 items?
60$
Step-by-step explanation:
Image of the triangle is attached
Answer:
24 cm
Step-by-step explanation:
If two triangles are similar, the corresponding sides must be in the same ratio.
From the diagram, the height of the triangle is 36cm.
But the height of triangle ABE = h,
To find the height of triangle BCD, let's subtract the height of triangle ABE from 36cm.
Therefore.
Height of BCD = 36 - h.
Since the triangles are similar and their corresponding sides have the same ratio, we have the expression:
Substituting figures, we have:
Cross multiplying, we have:
20(36-h) = 10 * h
720 - 20h = 10h
720 = 10h + 20h
720 = 30h

h = 24 cm
Therefore, the height of triangle ABE is 24cm
Answer:
smaller x =-1/2
larger x = 7
Step-by-step explanation:
(x-7)(-4x - 2) = 0
Using the zero product property
(x-7)=0 (-4x - 2) = 0
x-7+7 = 0+7 -4x-2-2 =0+2
x=7 -4x =2
-4x/-4 = 2/-4
x = -1/2