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3 years ago

A triangular lot bounded by three streets has a length of 300 feet on one street, 250 feet on the second, and 420 feet

Mathematics

1 answer:

ss7ja [257]3 years ago

7 0

Answer:

37,030

Step-by-step explanation:

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20. Which of the following decimals is equal to 30 percent? A. 0.3 B. 3 C. 30 D. 300

vivado [14]

The answer is A. .3 because do find the percent from a decimal you need to move the decimal point two to the right, so in this case it will be 30 or 30%

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3 years ago

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The height h in feet of a ball thrown vertically upward from the top of a 288-foot tall building is given by h=288+48t-16t^2 whe

mr Goodwill [35]

6 sec can take penny to strike the ground.

Solution:

Given data:

$H_0=288$ feet

$V_0=48$ feet

$h(t)=288+48t-16t^2$

Re-arrange the terms from greatest degree to smallest degree.

$h(t)=-16t^2+48t+288$

We can solve it by applying quadratic formula,

$$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

Here a = –16, b = 48, c = 288

$$t=\frac{-48\pm \sqrt{48^2-4(-16)(288)}}{2(-16)}$

$$t=\frac{-48\pm \sqrt{2304+18432}}{-32}$

$$t=\frac{-48\pm \sqrt{20736}}{-32}$

$$t=\frac{-48\pm144}{-32}$

Now, write find two t's using plus and minus operation.

$$t=\frac{-48+144}{-32},\ \ t=\frac{-48-144}{-32}$

$$t=\frac{96}{-32},\ \ t=\frac{-192}{-32}$

t = –3 (or) t = 6

We cannot write time is negative. so neglect t = –3.

Therefore t = 6.

Hence 6 sec can take penny to strike the ground.

8 0

3 years ago

( -20 , 14 ) and ( 30, 18)<br> Slope, Explanation needed please HELPPPPPP

Morgarella [4.7K]

Answer: 2/25

Step-by-step explanation:

The formula to find the slope is (y2-y1)/(x2-x1)

If you plug in the numbers, you get (18-14)/(30-(-20))

Solve the expression and you get 4/50 = 2/25

So your answer is 2/25

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3 years ago

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Solve the equation 3(x +4.5) = 36

vovangra [49]

Answer:

x=7.5

Step-by-step explanation:

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3 years ago

In a college philosophy class during the fall semester, there were 323 students,42% of whom were male and the rest of whom were

11111nata11111 [884]

C i think...........

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3 years ago