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Nadusha1986 [10]

3 years ago

10

PLEASE HELP MEEEEE THAnK YOU

1 answer:

laila [671]3 years ago

3 0

-6,2

That is da answer :)

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What happens to the value of the expression w-w as w increases?

kakasveta [241]

The value is always 0.

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4 years ago

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the lid of a rectangular box of sides 40 cm by 10 cm is sealed all round with tape. what is the length

Salsk061 [2.6K]

Answer:

40cm is the length of the box

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3 years ago

Which expression is<br>equivalent to 3(X-4)

agasfer [191]

Answer:
3x - 12 is an expression equivalent to 3(x - 4)

Explanation:
Another way to write this expression is to simplify it. To simplify the given expression, multiply the number three by the x and negative four inside the parentheses.

3(x - 4)
3x - 12

Therefore, 3x - 12 is the simplified version of the expression 3(x - 4). In other words, 3x - 12 is an expression equivalent to 3(x - 4).

5 0

3 years ago

The stopping distance d of an automobile is directly proportional to the square of its speed s. On one road, a car requires 75 f

Anton [14]

Answer:

The car requires 192 feet to stop from a speed of 48 miles per hour on the same road

Step-by-step explanation:

Direct proportion means that two quantities increase or decrease in the same ratio

If y is directly proportional to x (y ∝ x) , then $\frac{y_{1}}{y_{2}}=\frac{x_{1}}{x_{2}}$ <em>OR</em> y = k x, where k is the constant of proportionality

∵ The stopping distance d of an automobile is directly

proportional to the square of its speed s

- That means d ∝ s²

∴ $\frac{d_{1}}{d_{2}}=\frac{(s_{1})^{2}}{(s_{2})^{2}}$

∵ A car requires 75 feet to stop from a speed of 30 miles per hour

∴ d = 75 feet

∴ s = 30 miles/hour

- Change the mile to feet

∵ 1 mile = 5280 feet

∴ 30 miles/hour = 30 × 5280 = 158400 feet/hour

∵ The car require to stop from a speed of 48 miles per hour

on the same road

- Change the mile to feet

∴ 48 miles/hour = 48 × 5280 = 253440 feet/hour

∵ $\frac{d_{1}}{d_{2}}=\frac{(s_{1})^{2}}{(s_{2})^{2}}$

- Substitute the values of $d_{1}$ by 75 feet, $s_{1}$ by 158400 feet/hour

and $s_{2}$ by 253440 feet/hour

∴ $\frac{75}{d_{2}}=\frac{(158400)^{2}}{(253440)^{2}}$

∴ $\frac{75}{d_{2}}=\frac{25}{64}$

- By using cross multiplication

∴ 25 × $d_{2}$ = 75 × 64

- Divide both sides by 25

∴ $d_{2}$ = 192 feet

The car requires 192 feet to stop from a speed of 48 miles per hour on the same road

4 0

3 years ago

PLEASE PLEASE PLEASE HELP ME SOMEBODY!!!?!?

EastWind [94]

<span> the number of months of practice is 0, the predicted number of games won would be around 1.5

</span><span>y=1.9772727272727+1.8484848484848x</span>

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3 years ago