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3 years ago

Can I get some help? I don’t understand this :/

Mathematics

1 answer:

DIA [1.3K]3 years ago

4 0

Together they equal 90 degrees.
Equation:
(0.1x - 22) + (0.3x - 54) = 90
Open parenthesis and simplify:
0.4x -76 = 90
0.4x = 166
DIvide:
Your final answer is x= 415
Hope this helps!

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Choose all measurements that are equivalent to 45 meters.

sp2606 [1]

Answer:

option : b, c

Step-by-step explanation:

1 meter = 100 centimeters

45 meters = 4500 centimeters

1000 meter = 1 kilometer

$45 \ meters = \ \frac{45}{1000} = 0.045 \ kilometers$

1 meter = 1000 millimeters

45 meters = 45, 000 millimeters

4 0

3 years ago

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Morgarella [4.7K]

Answer:

(x - 8)(x + 7)

Zeroes: x = 8, x = -7

Step-by-step explanation:

Find factors of -56 that add to -1.

-8 and 7

The factored form is:

(x - 8)(x + 7)

The zeroes for this polynomial are x = 8 and x = -7

4 0

3 years ago

The path of a baseball, hit 3 feet above ground, is modeled by the function f(x)=-0.01x^2+x+3, where f(x) represents the vertica

ozzi

Answer:

Therefore the ball travel 102.92 feet horizontally before hitting the ground

Step-by-step explanation:

Given that, the path of a baseball, hit 3 feet above ground, is modeled by the function

$f(x)=-0.01 x^2+x+3$

where f(x) represents the vertical height of the ball in feet(Assume) and x is the horizontal distance in feet(Assume) .

When the ball hits the ground, then the vertically distance of the ball will be zero, i.e f(x)=0

$\therefore -0.01 x^2+x+3=0$

[Applying quadratic formula $x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}$ , here a = -0.001, b=1 and c=3]

$\Rightarrow x=\frac{-1\pm\sqrt{1^2-4.(-0.01).3}}{2.(-0.01)}$

$\Rightarrow x=-2.94, 102.92$

Therefore the ball travel 102.92 feet horizontally before hitting the ground.

8 0

3 years ago

A car is traveling at a rate of of 55 miles per hour. how many feet oer hour does the car travel?

Ray Of Light [21]

There are 5280 ft in a mile. 55*5280=290400. So the car is travelling 290,400 ft/hour

7 0

3 years ago

What is the arc measure of BC ?<br> B В<br> 120°<br> 6

fomenos

Answer:

Step-by-step explanation:

120

8 0

3 years ago