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3 years ago

9 m Perimeter = 42 meters length

Mathematics

1 answer:

Snezhnost [94]3 years ago

5 0

Answer:

Ok but what is this for

Step-by-step explanation:

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I need help with b fast

frosja888 [35]

2/8=1/4=3/12=6/24=20/80=10/40

6 0

4 years ago

PLEASE TELL THE ANSWER!!!!!!!!!!!!!!!ASAP!!!!!!

Lerok [7]

Answer:

The answer is letter "A "

8 0

3 years ago

You have a bag containing the following marbles: 12 pink, 4 orange, 3 blue, and 1 red. In fraction form, give

Rasek [7]

Answer:

1) 3/20

2) 2/5

3) 45

Step-by-step explanation:

2) P(not Pink) = 8/20 which reduces to 2/5

3) probability of blue is 3/20 which is 15/100; if you multiply the numerator and denominator by 3 you get 45/300

6 0

3 years ago

A ball is launched upward from a height 40 feet above ground level. The ball’s height at t seconds is given by -16t^2=128=40 .

Nesterboy [21]

Answer:

The ball will be at 100 feet at time x=0.5 sec and at time x=7.5 sec

Step-by-step explanation:

The correct question is

A ball is launched upward from a height 40 feet above ground level. the ball's height at t seconds is given by h(t)=-16t^2+128t+40 At what time(s) will the ball be at 100 feet?

we have

$h(t)=-16t^{2}+128t+40$

For h(t)=100 ft

substitute in the equation and solve for x

$-16t^{2}+128t+40=100$

$-16t^{2}+128t-60=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$-16t^{2}+128t-60=0$

$a=-16\\b=128\\c=-60$

substitute in the formula

$x=\frac{-128(+/-)\sqrt{128^{2}-4(-16)(-60)}} {2(-16)}$

$x=\frac{-128(+/-)\sqrt{12,544}} {-32}$

$x=\frac{-128(+/-)112} {-32}$

$x=\frac{-128(+)112} {-32}=0.5$

$x=\frac{-128(-)112} {-32}=7.5$

therefore

The ball will be at 100 feet at time x=0.5 sec and at time x=7.5 sec

7 0

4 years ago

the area of a triangle is 6 and 3/8 square yards. The height of the triangle is 2 and 1/2 yards. What is the length of the base

Otrada [13]

Solution:

Note that:

Area of triangle = 6 3/8 yd²
Height of triangle = 2 1/2
Area of triangle = 1/2 x base x altitude

Use the formula to find the base of the triangle.

1/2 x base x altitude = 6 3/8 yd²
=> 1/2 x base x 2 1/2 = 6 3/8 yd²
=> 1/2 x base x 5/2 = 6 3/8 yd²
=> 5/4 x base = 6 3/8 yd²
=> base = 6 3/8 ÷ 5/4 yd
=> base = 51/8 x 4/5 yd
=> base = 51/2 x 1/5 yd
=> base = 51/10 yd

The length of the base is 51/10 yards.

8 0

2 years ago

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