Answer:
x=10
Step-by-step explanation:
Let's solve your equation step-by-step.
(x−3)(x−5)=35
Step 1: Simplify both sides of the equation.
x2−8x+15=35
Step 2: Subtract 35 from both sides.
x2−8x+15−35=35−35
x2−8x−20=0
Step 3: Factor left side of equation.
(x+2)(x−10)=0
Step 4: Set factors equal to 0.
x+2=0 or x−10=0
x=−2 or x=10
Answer:
8ft
Step-by-step explanation:
4x2=8
Angle A = x + 22°.
Angle B = x.
And since the angles are complementary:
A + B = 90°
x + 22° + x = 90°
2 x + 22° = 90°
2 x = 90° - 22°
2 x = 68°
x = 68° : 2
x = 34°
Angle A = 56°, angle B = 34°
Answer : The value of x is A ) 34°.
Answer:
16/75 = .2133 or 21.33%
23/90 = .255 or 25.55%
13/15 = .866 or 86.66%
11/90 = .122 or 12.22%
Step-by-step explanation:
We know that to find the percent of a number you must multiply the percent by the number like this:
23% of 60
.23 x 60 = 13.8
Now to go backwards all you have to do is divide back. So for instance if we wanted to find now what percent 13.8 is of 60, we would divide 13.8/60 and get .23.
So for these just divide all the first numbers by the second numbers:
16/75 = .2133 or 21.33%
23/90 = .255 or 25.55%
13/15 = .866 or 86.66%
11/90 = .122 or 12.22%
hope this helps!
Cost of the books = £3 x 30 = £90
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Sales from 3/5 of the books :
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3/5 of the books = 3/5 x 30 = 18
40% of £3 = 0.4 x £3 = £1.20
Selling Price = £3 + £1.20 = £4.20
Total Sales = £4.20 x 18 = £75.60
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Sales from the remaining books :
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Remaining books = 30 - 18 = 12
Selling Price = £4.20 - 20% x £4.20
Selling Price = £4.20 - 0.2 x 4.20
Selling Price = £3.36
Sales = £3.36 x 12 = £40.32
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Find Percentage Profit :
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Total Sales = £75.60 + £40.32 = £115.92
Profit = £115.92 - £90 = £25.92
Percentage Profit = 25.92/90 x 100 = 28.8%
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Answer: 28.8%
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