Decide if the expressions are equivalent. 2.5x and x+5

1 answer:

3 0

If you want to see if they are equivalent just substitute any number such as 2, so 2.5(2) = 5 and 2 + 5 = 7, so they are not equivalent (THIS IS TRUE UNLESS YOU DIDNT PUT THE X VALUE IN THE QUESTION)

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An observer took a time-exposure photograph of polaris and five nearby stars. how many hours were required to show their star pa

olga55 [171]

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3 years ago

Round each fraction to the nearest half and find the estimate.

erastova [34]

Answer: The result is one half ( $\frac{1}{2}$ )

Step-by-step explanation:

We have the following expression:

$\frac{2}{6}+\frac{1}{6}$

Since both fractions have the same denominator, we can just add both numerators and keep the denominator:

$\frac{2+1}{6}=\frac{3}{6}$

Dividing numerator and denominator by $3$ :

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3 years ago

Y=-2x+7 and draw a graph

Airida [17]

Y=-2+7 here’s the graph

8 0

4 years ago

there are 27 red or blue marbles in the bag the number of red marbles is 5 less than three times the number of blue marbles how

maria [59]

Answer=24 blue marbles and 3 red marbles

r=red marbles
b=blue marbles
b=3(r+5)

27=b+r
substitue b for '3(r+5)'
27=3(r+5)+r
27=3r+15+r
27=4r+15
subtract 15 from both sides
12=4r
divide both sides by 4
3=r

There are 3 red marbles

27=b+r
27=b+3
subtract 3 from both sides
24=b

There are 24 blue marbles

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3 years ago

<img src="https://tex.z-dn.net/?f=%5Clongmapsto%5Csf%2010%5Ctimes%2010%5Ctimes%2011" id="TexFormula1" title="\longmapsto\sf 10\t

kvv77 [185]

Answer:

100 × 11

1100

Step-by-step explanation:

brainliest plz

3 0

3 years ago

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