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3 years ago

Evaluate the expression s=5 and t=7. 3st to the second power is what

Mathematics

1 answer:

bija089 [108]3 years ago

7 0

$s=5;\ t=7\\\\Subtitute\ the\ values\ of\ s\ and\ t\ to\ the\ expression\ 3st^2:\\\\3\cdot5\cdot7^2=15\cdot49=735$

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In sakura’s garden, for every 5 red flowers, there are 10 yellow flowers. There are a total of 75 yellow and red flowers in her

Pachacha [2.7K]

The first thing we must do for this case is to define variables.
We have then:
x: number of red flowers
y: number of yellow flowers.
We write the system of equations:
x + y = 75
y = 2x
Solving the system we have:
x = 25
y = 50
Answer:
there are 25 red flowers in Sakura's garden

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4 years ago

PLEASE HELP WITH THIS ONE QUESTION

EastWind [94]

Answer:

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since 4_20=-16<0

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3 years ago

John pays $3 for the train and $2 for the bus each day. Which ordered pair represents how much money John spends in 15 days on t

laiz [17]

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3 years ago

Read 2 more answers

A rocket is launched at t = 0 seconds. Its height, in meters above sea-level, is given by the equation

gogolik [260]

Answer:

Step-by-step explanation:

In order to find out how long it takes for the rocket to hit the ground, we only need set that position equation equal to 0 (that's how high something is off the ground when it is sitting ON the ground) and factor to solve for t:

$0=-4.9t^2+112t+395$

Factor that however you are factoring in class to get

t = -3.1 seconds and t = 25.9 seconds.

Since time can NEVER be negative, it takes the rocket approximately 26 seconds to hit the ground.

8 0

3 years ago

A local weather enthusiast wants to see if the last five summers have been warmer than normal for eloy, arizona. from the nation

motikmotik

For the local weather of Eloy, Arizona, the average for the last five years fits with the 30-year average.

<h3>What do you mean by standard deviation?</h3>

In statistics, Standard deviation is a measure of the variation of a set of values.

σ = standard deviation of a population

N = number of observations of population

X = mean

μ = population mean

The 30-year average for July was 90°. The standard deviation for this average is 2.1°. Thus, the temperature lies in the range around of 90° in July.

Therefore, the range of the temperature is,

t = 90 - 2.1 = 87.9

t = 90 + 2.1 = 92.1

The last five summers recorded have an average of 93. 5° and the value of a is 5%. Thus, the reduction is,

t = 92 - (92 x 2.5/100)

t = 89.70

This value of temperature lies in the range of 87.9-92.1 degrees Celsius. Hence, the two averages are probably the same.

Hence, for the local weather of Eloy, Arizona, the average for the last five years fits with the 30-year average. Option D is correct.

Learn more about the standard deviation here;

brainly.com/question/19243813

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2 years ago