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yKpoI14uk [10]
3 years ago
6

If a:3=b:4 then 4a-3b+5=??

Mathematics
1 answer:
gladu [14]3 years ago
6 0

Answer:

4a - 3b + 5 = 5

Step-by-step explanation:

Express the ratios in fractional form

\frac{a}{3} = \frac{b}{4} ( cross- multiply )

4a = 3b ( subtract 3b from both sides )

4a - 3b = 0

Then

4a - 3b + 5 = 0 + 5 = 5

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3 years ago
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3 years ago
"A new bakery offers decorated sheet cakes for children’s birthday parties and other special occasions. The bakery wants the vol
Darya [45]

Answer:

w = 9 \text{ inches}\\l = 13\text{ inches}\\h = 3\text{ inches}      

Step-by-step explanation:

We are given the following in the question:

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Let x inches be the width of cake.

Width of cake, w =

x\text{ inches}

Then, length of cake,l =

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Volume of cake = Volume of cuboid

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Putting values, we get:

351 = x(x+4)(\dfrac{x}{3})\\\\1053 = x^3 + 4x\\x^3+4x^2-1053= 0\\\\\text{For x = 9}\\(9)^3+4(9)^2-1053= 0

Thus, dimensions of cake are:

w = 9 \text{ inches}\\l = 13\text{ inches}\\h = 3\text{ inches}

3 0
3 years ago
Sarah drove 40 miles per hour . In 3 hours sarah drove 120 miles . Which is a vaild proportion to represent the problem?
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Answer:


Step-by-step explanation:

1/40=3/120

5 0
3 years ago
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Step-by-step explanation:

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