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2 years ago

6

brenda has two remote-controlled race cars painted blue and red, respectively. the blue car traveled 54 feel in 4 seconds. the r

ed car traveled 38 feet in 2 seconds. which car was faster and by how much?

1 answer:

Oxana [17]2 years ago

8 0

Answer:

like who names some one brenda the awnser is blue car

Step-by-step explanation:

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Find 2 numbers a and b such that (a-b)^2 < (a+b)(a-b)< (a+b)^2 Find two numbes a and b such that this is not true

Svet_ta [14]

Suppose for the moment that the inequality holds for all $a,b$ :

$(a-b)^2$

Expanding everything gives

$a^2-2ab+b^2$

$\implies-ab$

In particular, the inequality says that $-ab$ for any choice of $a,b$ . But if $a$ and $b>0$ , then $-ab>0$ while $ab$ .

So one possible choice of $a,b$ could be $a=-1$ and $b=1$ . Then we get

$(-1-1)^2=4$

$(-1+1)(-1-1)=2$

$(-1+1)^2=0$

but clearly it's not true that $4$ .

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2 years ago

A module house is made by sticking a triangular prism on top of a rectangular block, as shown in the diagram.

kotegsom [21]

Answer:

d

Step-by-step explanation:

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2 years ago

Kyra started with the number 56.8. If she ended with 568what did she do to the number

svet-max [94.6K]

Wow this ones easy.....Your in high school and i'm in middle school LOL...I'll answer the question.You have to <span>multiplied it by 10</span>

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3 years ago

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What is x when the equation is 5|2x+3|=45?

storchak [24]

1.)divide by 5 on each side to obtain
Abs(2x+3)=45
2x+3=45 or 2x+3=-45
2x=42 or 2x=-48
x=21 or x=-24

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3 years ago

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a boat cost $12050 and decreases in value by 12% per year. how much will the boat be worth after 9 years

sweet [91]

Each year the boat is worth 100-12 = 88% ( or 0.88) of the year before

after 12 years the boat is worth 12050 * 0.88^9 = $3813.56

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2 years ago