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victus00 [196]
3 years ago
7

I need help anyone??? please??????

Mathematics
2 answers:
olchik [2.2K]3 years ago
8 0
The principal square root of 49 is just 7 because 7 times 7 is 49.
It can not be -7 because a principle square root cannot be negative.

\sf\ Answer: A)\ 7

\sf\ \sqrt{49}=\\\±7\\\\-7\ and\ 7\ are\ both\ square\ roots\ of\ 49\ because\ 7\times7=49\ and\\\\-7\times-7=49.\\\\But\ as\ I\ said\ before,\ principal\ square\ roots\ can\ not\ be\ negative\\\\numbers.\\\\That\ will\ eliminate\ any\ options\ with\ -7.\\\\So\ the\ only\ principal\ square\ root\ that\ we\ have\ is\ {\boxed{7}
Ronch [10]3 years ago
5 0
The answer would be 7 
because the square root of 49 is 7. 
so 7 multiplied 7 is ..49

The answer wont be -7 because in Principal root, 
negative numbers are not involved, you cant do it! :)

That being said you'd also be able to know that since no negative numbers are allowed in principle root, -7 and 7 are out as choices, and D is totally wrong since we now know what the priniciple root means :)
The answer is 7
Hope this helped !

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3/5 x 3/4? anyone wanna help?
spin [16.1K]

Answer:

9/20

multiplty the numerators

3 x 3 =9

---   ---  ---

5     4   ?

multiply the denominators

3 x 3 = 9

---   ---  ---    

5 x 4 = 20

simplify if needed

9/20 is already in its simplest form

4 0
3 years ago
Help please 1 please
Gwar [14]

the answers would be 45 and 75

3 0
4 years ago
Read 2 more answers
Write an equation of the line with a slope of 3/4 and y-intercept of -2
aleksandr82 [10.1K]
The slope intercept form equation is this
y = mx + b
m being the slope and b being the y intercept
So, an equation of a line with a slope of 3/4 and a y-intercept of -2 would look like this
y = 3/4x - 2
I hope this helps.
YOU'RE WELCOME :D
7 0
3 years ago
Val measures the diameter of a ball as 6 inches. How many cubic inches of air does this ball hold, to the nearest tenth? Use 3.1
7nadin3 [17]

Answer:

The ball holds 113.0 cubic inches of air

Step-by-step explanation:

Firstly we need to know the shape of the ball

A ball is spherical in shape

So to know the number of cubic inches, we have to find the volume of air in the ball

Mathematically, we can do this by finding the volume of the ball using the formula for the volume of a sphere

The formula for the volume of a sphere is ;

V = 4/3 * pi * r^3

in this case, r = d/2 = 6 /2 = 3 inches

where r is the radius of the ball and d is the diameter of the ball

So, substituting these values , we have

V = 4/3 * 3.14 * 3^3 = 113.0 cubic inches

3 0
3 years ago
Help picture below problem 17
mixas84 [53]

Answer:

40

Step-by-step explanation:

Angle KPJ is going to have the same measure as Angle DPE. This problem is a bit tricky, but I'll try my best to explain it. A straight angle is basically just a straight line, and it equals 180 degrees. Angle FPG is a straight angle.

To find the measure of Angle KPJ, we first have to find the measure of angle DPE, and the way we're gonna do that is add together the other angles in the straight angle (which would be Angle FPD and Angle EPG) and then subtract that from 180 (measure of a straight angle).

That might have sounded a bit confusing, but that's the best way I could explain it. Now, let's add Angle FPD and Angle EPG.

105 + 35 = 140

Now, let's subtract that from 180.

180 - 140 = 40

We now know that the measure of Angle DPE is 40, and since it's equivalent to Angle KPJ, our answer is 40!

I know that was confusing, but I hope it helped a little bit! Have a lovely day!! :)

3 0
2 years ago
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