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coldgirl [10]
3 years ago
15

Help how do I do this​

Mathematics
1 answer:
guajiro [1.7K]3 years ago
7 0

Answer:

12X+14

Step-by-step explanation:

Bc u can’t add X wit a number so 12X+14

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A certain positive number is multiplied by 4, and then the result is subtracted from the original number. The result is 21 less
stira [4]

Answer:

The number is 7

Step-by-step explanation:

certain positive number: x

x is multipled by 4:

4x

result of this is subtracted from the original number:

so original number minus 4x,

x - 4x

the result is 21 less than 0, this means negative 21

x - 4x = 0 - 21 = -21

do algebra:

-3x = -21

multiply both sides by -1

3x = 21

divide both sides by 3

x=7

(certain positive number: x) is equal to 7

4 0
3 years ago
Read 2 more answers
Simplify the expression by combining like terms if possible. If not possible select already simplified. 4a^2+2a+4a^2-5
vichka [17]
So the expression is: 4 a^{2} + 2a + 4 a^{2} - 5

You can combine like terms, which are terms that contain the same variables raised to the same power. That means you can combine the two 4 a^{2}. 4 a^{2} + 4 a^{2} = 8 a^{2} The other terms can't be combined.

Your final answer should be 8 a^{2} +2a-5.
8 0
3 years ago
Helppppp i dont know pslßss​
Natali5045456 [20]

Answer:

width=3

Step-by-step explanation:

area=length X width

length=4 X width

=>area=4 X width X width

=>area=(2 X width)^2

=>36=(2 X width)^2

=>6=2 X width

=>width=3

5 0
3 years ago
Read 2 more answers
Which is greater (this may be confusing), 36 yd 2 ft or 114 ft 2 in
zhuklara [117]
Hello there!

Your answer is 114 feet

Hope I helped!

Let me know if you need anything else!

~ Zoe
6 0
3 years ago
Read 2 more answers
a rectangular plot of ground is 30 meters longer than it is wide. its area is 15,00 square meters. what equation will help you f
e-lub [12.9K]
Length(width + 30)=15,000 square meters, so the equation is l(w+30)=15,000, either 15,000 or 1,500 i cannot tell which number you were meaning to say because of where your comma is placed.
4 0
3 years ago
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