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3 years ago

What is the reason that <ABD is congruent to <CBD?

Mathematics

1 answer:

igomit [66]3 years ago

4 0

Definition of angle bisector. we are given thatBD bisects angle ABC. that means it cuts it into 2 equal angles. angles ABD and CBD are these 2 angles

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Write an algebraic expression for the statement.The income earned at $ 10.91 per hour for w hours....

Alja [10]

This is a "rate of pay" problem. The amount earned is equal to the (rate of pay) times the (number of hours worked).

Let the income be represented by "i". Then the formula is i = ($10.91/hour)*w, where w is the number of hours worked and has the unit of measurement "hours."

5 0

3 years ago

If a certain cannon is fired from a height of 8.8 meters above the ground, at a certain angle, the height of the cannonball ab

Dennis_Churaev [7]

Answer:

It would take approximately 6.50 second for the cannonball to strike the ground.

Step-by-step explanation:

Consider the provided function.

$h(t)=-4.9t^2+30.5t+8.8$

We need to find the time takes for the cannonball to strike the ground.

Substitute h(t) = 0 in above function.

$-4.9t^2+30.5t+8.8=0$

Multiply both sides by 10.

$-49t^2+305t+88=0$

For a quadratic equation of the form $ax^2+bx+c=0$ the solutions are: $x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

Substitute a = -49, b = 305 and c=88

$t=\frac{-305+\sqrt{305^2-4\left(-49\right)88}}{2\left(-49\right)}=-\frac{-305+\sqrt{110273}}{98}\\t = \frac{-305-\sqrt{305^2-4\left(-49\right)88}}{2\left(-49\right)}= \frac{305+\sqrt{110273}}{98}$

Ignore the negative value of t as time can't be a negative number.

Thus,

$t=\frac{305+\sqrt{110273}}{98}\approx6.50$

Hence, it would take approximately 6.50 second for the cannonball to strike the ground.

6 0

3 years ago

Y is inversely proportional to x.<br> When y=50, x=4 <br> Work out y when x=8

notka56 [123]

Answer:

100

Step-by-step explanation:

5 0

3 years ago

Question 2

cluponka [151]

Answer:

4:5

Step-by-step explanation:

28:35

28/7:35/7

4:5

hopefully this helps :)

4 0

2 years ago

19 and use the bar thing to get answeer no links or i report

Agata [3.3K]

I think it’s C

Explanation: the blue yarn is 7 and the red yarn is 10 if you combine both as 7 + 10= 17

6 0

2 years ago