2 years ago

Find the equivalent ratio. Fill in the missing numbers

Mathematics

1 answer:

WINSTONCH [101]2 years ago

8 0

Answer:

so a=36, b=3, c=5, d=540

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sdas [7]

8x +(5.5)y=78.50 is the equation.

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2 years ago

Since 1995 the cost of a bag of groceries has increased about 2.5% each year. The equation C = 25(1.025)x will give the value of

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Answer: 28 years

Step-by-step explanation:

Given

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If the price of the bag increased by 2.5%, from the equation, we can deduce that

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$\Rightarrow 50=25(1.025)^x\\\Rightarrow 2=1.025^x\\\text{Taking natural log}\\\Rightarrow \ln 2=x\ln (1.025)\\\\\Rightarrow x=\dfrac{\ln 2}{\ln 1.025}\\\\\Rightarrow x=28.07\approx 28$

It will take 28 years

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2 years ago

Kendra types 72 words per minute. At this rate, how long will it take Kendra to complete a letter of 900 words?

riadik2000 [5.3K]

900 ÷ 72 = 12.5 minutes

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2 years ago

What is the value of c in the equation y = 4x^2 -10x + c if the y-coordinate of the vertex is -7

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Answer: $c=-\frac{3}{4}$

Step-by-step explanation:

Find the x-coordinate of the vertex with this formula:

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In this case:

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Substituting values, we get:

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Now we can substitute the coordinates of the vertex into the equation $y = 4x^2 -10x + c$ and then solve for "c".

Then:

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2 years ago