Answer:
DF = 3
m<B = 28 degrees
Step-by-step explanation:
Hope that helps!
9514 1404 393
Answer:
2.25
Step-by-step explanation:
The number 2.25 is already in standard form.
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In the US (and other places), "standard form" is an ordinary decimal number, with the integer part to the left of the decimal point and the fractional part to the right of the decimal point: 2.25.
In the UK (and other places), "standard form" is a number written in scientific notation with a mantissa consisting of the leading non-zero digit to the left of the decimal point, the remaining significant digits to the right of the decimal point, and a multiplier that is 10 to the power appropriate to the place value of the leading digit. When the multiplier is 1, we need not write it.
2.25 = 2.25×10⁰ (full form) = 2.25 (with superfluous 10⁰ removed)
The velocity of a particle when it moves on a straight line along the x-axis will be V= 42 m/s
<h3>What is velocity?</h3>
Velocity is defined as the ratio of the distance moved by the object in a particular time. The velocity is a vector quantity so it needs both the magnitude and the direction.
Here we have a displacement function:-
F(t)=3t⁴-5t³+6t-7
So to find out the velocity we will differentiate the above equation with respect to t.
d(F(t)/dt=12t³-15t²+6
V=12t³-15t²+6
Put the value of t=2 seconds
V=12x(2x2x2)-15x(2x2)+6
V=42 meters per second
Hence the velocity of a particle when it moves on a straight line along the x-axis will be V= 42 m/s
To know more about Velocity follow
brainly.com/question/25749514
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The ratio of boys to girls in simplest form is
14:16
14/16
Divide through by 2
7/8
So the ratio of boys to girls in simplest form is 7/8