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stealth61 [152]
3 years ago
14

Evaluate: 7.921 x 10^4. ​

Mathematics
1 answer:
Sveta_85 [38]3 years ago
8 0

Answer: 72,910

Step By Step Explaination:  7.291 x 10^4

10^4 means to move the decimal places four times.

7.921 = 79.210 = 792.10 = 7921.0 = 79,210

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What is the width of a rectangle that has an area of 12 square inches and a length of 2.5 inches
laiz [17]

Answer:

<u>The width of the rectangle is 4.8 inches</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Area of the rectangle = 12 square inches

Length of the rectangle = 2.5 inches

2. What is the width?

We will find out the width, this way:

Width * Length = Area of the rectangle

Replacing with the real values, we have:

Width * 2.5 = 12

Width = 12/2.5

<u>Width of the rectangle = 4.8 inches</u>

8 0
4 years ago
Find the equation of the plane with the given description. contains the lines r1(t) = 2, 1, 0 + t, 2t, 4t and r2(t) = 2, 1, 0 +
Genrish500 [490]
The intersection point of the two lines is (2,1,0).
The respective direction vectors are
L1: <1,2,4>
L2: <4,1,15> 
Since the normal vector of the required plane is perpendicular to both direction vectors, the normal vector of the plane is obtained by the cross product of L1 and L2.
i  j    k
1 2  4
4 1 15
=<30-4, 16-15, 1-8>
=<26, 1, -7>

We know that the plane must pass through (2,1,0), the equation of the plane is

26(x-2)+1(y-1)-7(z-0)=0
simplifying,
26x+y-7z=52+1+0=53
or
26x+y-7z=53

Check:
Put points on L1 in the plane
26(t+2)+(2t+1)-7(4t+0)=53   ok
For L2,
26(4t+2)+(t+1)-7(15t+0)=53  ok
8 0
3 years ago
What is 39.5% written as a fraction in simplest form please help me please
Gekata [30.6K]
39.5 %
39.5 / 100
39 1/2  /  100
79/2 / 100
79 / 200
3 0
3 years ago
Read 2 more answers
Math homeworkkkkkkkkkkkk
Blababa [14]
Hopefully these are correct lol, make sure to check it with a classmate. but i tried :)

6 0
4 years ago
Which ones are the distance formula and midpoint formula?
lutik1710 [3]

Answer:

The distance formula is d=\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)2}

The midpoint formula is \left(\frac{x_1\:+x_2}{2}\right),\left(\frac{y_1-y_2}{2}\right)

Step-by-step explanation:

apply the pythagorean theorem on a coordinate grid

7 0
3 years ago
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