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3 years ago

If 50% of a number is 150 and 30% of the same number is 90, find 80% of that number.

Mathematics

2 answers:

Crank3 years ago

5 0

Answer:

240

Step-by-step explanation:

50%*x=150

0.5x=150

x= 300

30%*x=90

0.3x= 90

x= 300

80%*300=

0.8*300= 240

Alexandra [31]3 years ago

4 0

Answer:

240

Step-by-step explanation:

We know that 50% of the number is 150 so we can assume the number is 300(if its 50% just double that number). Next we use the equation 0.80 x 300 which gives us the answer 240.

Hope I helped

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Hitman42 [59]

Answer:

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Step-by-step explanation:

multiply factors on left side gives

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c $y^{3+d}$ = 2 $y^{6}$

For both sides to be equal then

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As a check

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2 years ago

A researcher took a random sample of 100 students from a large university. She computed a 95% confidence interval to estimate th

katen-ka-za [31]

Answer:

Part (A): The correct option is true.

Part (B): The null and alternative hypothesis should be:

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Step-by-step explanation:

Consider the provided information.

Part (A)

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Hence, the correct option is true.

Part (B)

The researcher wants to identify that whether there is any significant difference between the measurement of the blood pressure.

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$H_o: \mu =0 ; H_a:\mu \neq0$

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2 years ago

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Olegator [25]

8,-2. place the x as 8 and y as -2.