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sweet [91]
3 years ago
13

Question B help me please

Mathematics
1 answer:
stira [4]3 years ago
3 0

12, 54, 90 is the correct answer I got it right

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Is 3x+2y=8 a quadratic equation?
Ierofanga [76]

Answer:

No.

Step-by-step explanation:

No, it is a linear equation.  There are no exponents on the x or y variables.

7 0
2 years ago
the length of a rectangle is five feet less than its width. If the area of the rectangle is 84 square feet, find its dimensions
KIM [24]
Let
x---------> the length of the rectangle
y--------> the width of the rectangle

we know that
A=84 ft²
[area of rectangle]=x*y-----> 84=x*y-----> equation 1
x=y-5------> equation 2
substitute 2 in 1
84=[y-5]*y-----> 84=y²-5y---------> y²-5y-84=0

using a graph tool-----> to resolve the second order equation
see the attached figure

the solution is
y=12
x=y-5-----> x=12-5-----> x=7

the answer is
the length of the rectangle is 7 ft
the width of the rectangle is 12 ft

6 0
3 years ago
Is 3 x 1/2 greater than 5?
Kryger [21]
No it is not greater than 5

When ever you are multiply a number by 1/2 you are halving the number. So in the us case 3 x 1/2 is 1.5.

And 1.5 is not greater than 5

So the answer is no



Can you please mark brainleist
3 0
2 years ago
Tiffany used her debit card to buy lunch for $9.72 on Wednesday. On Thursday, she deposited $9.72 back into her account. What is
Wittaler [7]
There is no overall increase or decrease in her bank account.

She spent $9.72 and later deposited the same exact amount. 

So the over increase or decrease was $0.

I hope I've helped you! If you have any more questions let me know!

5 0
3 years ago
A sphere has a radius of 6 meters. A second sphere has a radius of 3 meters. What is the difference of the volumes of the sphere
Lesechka [4]
The first one 37.68 the second one 18.84
4 0
3 years ago
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