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Lisa [10]
3 years ago
10

Three more than four times a number is 15

Mathematics
2 answers:
zimovet [89]3 years ago
8 0
4x +3=15 is the equation ..... You do not have to solve it
vodka [1.7K]3 years ago
7 0
You can model this with the equation 4x+3=15 since it is a number (x) times 4 with 3 added and equals 15.
Subtract 3 from both sides
4x=12
Divide both sides by 4
x=3
You might be interested in
How do I show my work for solving the radius of a circle if the area is 78.5 cm^2
SIZIF [17.4K]

9514 1404 393

Answer:

  radius = 5 cm

Step-by-step explanation:

The point of "show your work" is to have to do exactly that. If you know the answer to the problem, you are being requested to show how you got it. If you got it by using a web calculator, then show your input and its result.

__

If you worked the problem yourself, you probably did it by filling in numbers in the equation for the area of a circle:

  A = πr²

  78.5 = 3.14×r²

Dividing both sides by 3.14 gives the square of the radius:

  78.4/3.14 = r² = 25

Taking the positive square root gives the radius:

  r = √25 = 5

The area is in square centimeters, so the radius is in centimeters:

  radius = 5 cm

7 0
2 years ago
Answer to question one pleaseeeee help !!
Salsk061 [2.6K]
The answer is 19.6 cm^2


you should find the height of the triangle by heron formula: it will be 9.8

so the area is
(9.8 \times 4 ) \div 2= 39.2 \div 2 = 19.6



good luck
8 0
3 years ago
Relatively Simple Math, pls lend a hand. 50 points and Brainliest
ivann1987 [24]
I think the answer is A
7 0
2 years ago
Read 2 more answers
Rewrite 0.81 x<br> 104 in scientific notation.<br> x 10<br> HELP ME
aev [14]
0.81 x 10^4
= 8.1 x 10^3
4 0
3 years ago
Read 2 more answers
8 w + 12 = -12<br> Helpppppp
aliina [53]

Answer:

w = -3

Step-by-step explanation:

8w + 12 = -12

use inverse operations:

8w + 12 = -12

-12         -12

8w = -24

/8    /8

w = -3

7 0
3 years ago
Read 2 more answers
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