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3 years ago

Can someone help with step by step

Mathematics

1 answer:

MrMuchimi3 years ago

3 0

Answer:

See explanation

Step-by-step explanation:

$In\: \triangle ABC \:\&\: \triangle EDC\\\angle ABC \cong \angle EDC... (Right \: \angle s) \\\angle ACB \cong \angle ECD... (Vertical \: \angle s) \\\therefore \triangle ABC \sim \triangle EDC... (By\: AA\: Postulate) \\$

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Which expression represents the inverse of the function f(x)=4x

Anton [14]

Answer:

$f^{-1}$ (x) = $\frac{x}{4\\}$

Step-by-step explanation:

Let y = f(x) and rearrange making x the subject

y = 4x ( divide both sides by 4 )

x = $\frac{y}{4}$

Change y back into terms of x

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2 years ago

At the parents evening the ratio of mums to dads was 3:2. Out of 500 appointments how many were with mums?

guajiro [1.7K]

Answer:

300

Step-by-step explanation:

Sum the parts of the ratio : 3 + 2 = 5 parts

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3 years ago

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3 years ago

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nydimaria [60]

Answer:

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2 years ago