Can someone help me with this math? i attached a photo! its Measurements.

Mathematics

1 answer:

Harrizon [31]4 years ago

6 0

Answer:

A.) 26 ft. 3 in.

B.) 10 ft. 4 in.

Step-by-step explanation:

A.) First add 18 and 7 which is 25.

But, there are still inches which will be converted to feet.

1 foot=12 inches

11+4=15

15-12=3

So, 26 feet and 3 inches

B.) Make feet into inches.

19 x 12= 228

Add the inches

228+7=235

8x12=96

96+8=104

Now subtract 228 and 104 which is 124.

Divide 124 by 12 to find the amount of feet.

Divide it, and the remainder will be the inches.

10 Feet and 4 inches

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A batter strikes a baseball. the equation y = -0.005^2 +0.7x + 3.5 models its path, where x is the horizontal distance, in feet,

hram777 [196]

Answer:

(D)144.8 feet

Step-by-step explanation:

Given the equation which models the path of the baseball

$y = -0.005x^2 +0.7x + 3.5$

where x is the horizontal distance, in feet, the ball travels and y is the height, in feet, of the ball.

To determine how far from the batter the ball will land, we determine the distance x at which the height, y=0.

$y = -0.005x^2 +0.7x + 3.5=0$

$-0.005x^2 +0.7x + 3.5=0$

We use the quadratic formula to solve.

In the quadratic equation above, a=-0.005, b=0.7, c=3.5

$x=\dfrac{-b\pm\sqrt{b^2-4ac} }{2a} \\=\dfrac{-0.7\pm\sqrt{0.7^2-4(-0.005*3.5)} }{2*-0.005} \\=\dfrac{-0.7\pm\sqrt{0.49+0.07} }{-0.01}\\=\dfrac{-0.7\pm\sqrt{0.56} }{-0.01}\\x=\dfrac{-0.7+\sqrt{0.56} }{-0.01} \: or\: x=\dfrac{-0.7-\sqrt{0.56} }{-0.01}\\x=-4.83 \: or\: x=144.83$