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joja [24]
3 years ago
5

-1 + 2x - x = x - 8 + (-x)

Mathematics
1 answer:
CaHeK987 [17]3 years ago
6 0

Answer:

x = -7

Step-by-step explanation:

-1 + x = -8

x = -7

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ZB=<br> Round your answer to the nearest hundredth.<br> А<br> 9<br> ?<br> С<br> B<br> 5
xxMikexx [17]
45 degrees
Right triangle = 180
90 degrees is given
180-90= 90
Then divide by 2
90/2= 45 degrees
4 0
3 years ago
I need help, i get like 4712, but its not an answer
ella [17]

So you will need to find the height, and we can do so by using the pythagorean theorem, which is leg^2+leg^2=hypotenuse^2 . Using this formula, we can make the equation 15^2+h^2=25^2


Firstly, solve the exponents: 225+h^2=625


Next, subtract 225 on both sides: h^2=400


Lastly, square root both sides, and your answer is h = 20.



Now that we got the height, we can solve for the volume, which is V=\pi r^2\frac{h}{3} . Using this formula, we can form our equation to be V=\pi 15^2\frac{20}{3}


Firstly, solve the exponent: V=\pi*225*\frac{20}{3}


Next, multiply 225 and 20/3, and your answer will be V = 1500π, or the third option.

7 0
3 years ago
Find the surface area of the hexagonal prism
arsen [322]

Answer:

4,636.8 \:  {in}^{2}

Step-by-step explanation:

Surface area of the hexagonal prism

= Area of base * Height

= 6*Area of one triangle *height

= 6( \frac{1}{2}  \times 8 \times 6.9) \times 28 \\  \\  = 6(4 \times 6.9)28 \\  \\  = 6 \times 27.6 \times 28 \\  \\  = 4,636.8 \:  {in}^{2}

5 0
3 years ago
486 is 60% of what amount?
Alborosie
With these types of problem, just remember to replace "is" with "="
and remember 60% also = 0.6
and let's called the amount x
so
486 = 0.6x
divide both sides by 0.6
and you'll get x which is the amount you are looking for
7 0
3 years ago
What is the measure of an exterior angle in a regular triangle?
Alenkasestr [34]

Answer:

120 Degrees

Step-by-step explanation:

Considering all the angles will be 60 degrees, we know that the exterior angles must also be 120 degrees.

Simple as that.

5 0
3 years ago
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