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1 year ago

NEED HELP

2 answers:

6 0

1.80
2.40
3.40
Round to the nearest ten, then you need to see the unit digit, if the unit digit is more than or equal to 5, then add one to the ten digit, and write 0 in the back ;if not , only write the 0 in the back of ten digit

lawyer [7]1 year ago

4 0

Answer:

80, 40, 40

Step-by-step explanation:

The rule is if the number before the tens place is 5 or more round up and if it is 4 or less round down.

I like to look at it without the rule and what makes sense.

82.14: my choices are 80 or 90. What number is 82.14 closer to on the number line? 80.

38.5 The choices are 30 and 40. This number on a number line would be closer to 40

41.3 The choices are 40 and 50. On a number line this number would be closer to 40.

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A coach purchases 47 hats for his players and their families at a total cost of $302. The cost of a small hat is $5.50. A medium

frosja888 [35]

Answer:

The answer is below

Step-by-step explanation:

Let x represent the number of small hat purchased, y represent the number of medium hat purchased and z represent the number of large hat purchased.

Since a total of 47 hats where purchased, hence:

x + y + z = 47 (1)

Also, he spent a total of $302, hence:

5.5x + 6y + 7z = 302 (2)

He purchases three times as many medium hats as small hats, hence:

y = 3x

-x + 3y = 0 (3)

Represent equations 1, 2 and 3 in matrix form gives:

$\left[\begin{array}{ccc}1&1&1\\5.5&6&7\\-3&1&0\end{array}\right] \left[\begin{array}{c}x\\y\\z\end{array}\right] = \left[\begin{array}{c}47\\302\\0\end{array}\right] \\\\\\\\ \left[\begin{array}{c}x\\y\\z\end{array}\right] =\left[\begin{array}{ccc}1&1&1\\5.5&6&7\\-3&1&0\end{array}\right] ^{-1} \left[\begin{array}{c}47\\302\\0\end{array}\right] \\\\\\ \left[\begin{array}{c}x\\y\\z\end{array}\right] = \left[\begin{array}{c}6\\18\\23\end{array}\right]$

Therefore he purchases 6 small hats, 18 medium hats and 23 large hats

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3 years ago

127.5 is 250% of what?

Inga [223]

Your answer is 127.5 is 250% of 51

4 0

3 years ago

Evaluate the function f(x)= -2x +1 for f(3). <br><br> A)-5<br> B)6<br> C)7<br> D)10

pantera1 [17]

<span>f(x)= -2x +1 for f(3)

f(3) = -2(3) + 1 = -5

answer
</span><span>A)-5</span>

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3 years ago

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Does anyone know this ?!!

Elodia [21]

Answer:

im not 100% sure...but i think its integer

Step-by-step explanation:

i read on google

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3 years ago

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What is the relationship between translations, reflections, and ridgid motion?

vivado [14]

The relationship between translations, reflections, and rigid motion is that they are all types of rigid motions, which means their size does not change.

<h3>What exactly is rigid motion?</h3>

Rigid motion is the movement of a set in which the distance between points remains constant.

<h3 /><h3>What is translation?</h3>

Translation is a type of rigid motion in which an object simply slides while maintaining its direction.

<h3 /><h3>What do you mean by reflection?</h3>

A reflection, like a mirror, causes an image to flip to another location.

We must establish a connection between translations, reflections, and rigid motion.

We can conclude from the above definitions that the size of the object remains constant, but it is undergoing different transitions.

Therefore, Translations, reflections, and rigid motion all belong to the category of transformations that are rigid motions, which means that their sizes don't change.

Learn more about motion here-

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7 0

1 year ago