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Agata [3.3K]
3 years ago
8

Peggy was taking a timed 90-question test. She was able to correctly answer 80% of the questions but had to skip the rest. How m

any questions did Peggy answer correctly?
Mathematics
1 answer:
professor190 [17]3 years ago
7 0
Multiply your total by your percentage

90 * .80 = 72

72 is the number of questions she answered correctly
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A sporting goods store ordered new bikes and scooters. For every 3 bikes ordered, 4 scooters were ordered. However, bikes were m
Naddik [55]
<span>1.       </span><span>Original ratio of the bike and scooter is equals to :
=> 3 : 4, where 3 is the bike and 4 is the scooter
=> 48 bikes
=> original order = 64 scooter
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however, bike is more popular than scooter, so they changed it into new ratio:
=> 5 : 2 , where 5 is equals to bikes and 2 is equals to scooter.
=> 5 x 16 = 80 bikes
=> 2 x 16 = 32 scooter.</span>



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3 years ago
Write fifteen cubed in exponential notation,expanded form,and standard form.
Anna11 [10]
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How do you graph y=6x-3
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y=6x-3

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continue to do this until you graph is filled

3 0
3 years ago
If 3 oranges cost $1.75, how much would 18 oranges cost?
Hunter-Best [27]

Answer:

31.5 i think

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3 years ago
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A type of plant is introduced into an ecosystem and quickly begins to take over. A scientist counts the number of plants after m
Artyom0805 [142]

With no limiting factors to the growth of the plants, the number of  months have passed since the plants were first introduced is 23.1.

<h3>What is an exponential function?</h3>

Exponential function is the function in which the function growth or decay with the power of the independent variable. The curve of the exponential function depends on the value of its variable.

A type of plant is introduced into an ecosystem and quickly begins to take over.

A scientist counts the number of plants after m months and develops the equation to model the situation, which is given as,

p(m)=19.3(1089)^m

Most recently, the scientist counted 138 plants.

138=19.3(1089)^m\\(1089)^m=7.15

Taking log both sides of the equation,

\log(1.089)^m=\log7.15\\m\log(1.089)=\log(7.15)\\m=\dfrac{\log7.15}{\log(1.089)}\\m\approx23.1

Thus, with no limiting factors to the growth of the plants, the number of  months have passed since the plants were first introduced is 23.1.

Learn more about the exponential function here;

brainly.com/question/15602982

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2 years ago
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