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Mathematics

1 answer:

Dahasolnce [82]3 years ago

3 0

Answer:

The equation would be 7.50x + 15=90

Step-by-step explanation:

So the the total you are trying to find is 90. So the equation would equal 90. Now since we are trying to find a unknown variable we use x. This results in 7.50x. Now 15 is a known variable so it will just stay the same. The amount of hours would be 10.

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Plz help what is 8 t.=_______lb.?

larisa86 [58]

Answer:

16,000 lb.

Step-by-step explanation:

For every ton, it equals 2,000 pounds. So to find how many pounds is in 8 tons, just multiply 2,000 by 8. This would give you 16,000 pounds!

This is of course using the U.S. tons, so if you want to convert it for metric tons it would be 17,632 since 1 metric ton = 2204.

I hope this was able to help!

7 0

3 years ago

One angle of an isosceles triangle measures 64°. Which other angles could be in that isosceles triangle? Choose all that apply.

konstantin123 [22]

Answer:

64 and 52 or 58 and 58

Step-by-step explanation:

All the angles have to add up to 180 and 2 angles need to match

6 0

3 years ago

Need help with homework

motikmotik

We have two points describing the diameter of a circumference, these are:

$\begin{gathered} A=(-12,-4) \\ B=(-4,-10) \end{gathered}$

Recall that the equation for the standard form of a circle is:

$(x-h)^2+(y-k)^2=r^2$

Where (h,k) is the coordinate of the center of the circle, to find this coordinate, we find the midpoint of the diameter, that is, the midpoint between points A and B.

For this we use the following equation:

$M=(\frac{x_1+x_2_{}_{}}{2},\frac{y_1+y_2}{2})$

Now, we replace and solve:

$\begin{gathered} M=(\frac{-12+(-4)}{2},\frac{-4+(-10)}{2} \\ M=(\frac{-12-4}{2},\frac{-4-10}{2}) \\ M=(\frac{-16}{2},\frac{-14}{2}) \\ M=(-8,-7) \end{gathered}$

The center of the circle is (-8,-7), so:

$\begin{gathered} h=-8 \\ k=-7 \end{gathered}$

On the other hand, we must find the radius of the circle, remember that the radius of a circle goes from the center of the circumference to a point on its arc, for this we use the following equation: