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Sedaia [141]
2 years ago
5

What is the constant in the mathematical expression? 3/4ab+7.5

Mathematics
1 answer:
melamori03 [73]2 years ago
5 0

Answer:

Therefore, 7.5 is the constant in mathematical expression.


Step-by-step explanation:

Given the mathematical expression:

\frac{3}{4}ab+7.5Explanation[tex]\frac{3}{4} is cofficient of ab in this expression.

ab is variable( whose values can be changed).

7.5 is a constant term ( whose value can't be changed).

Therefore, 7.5 is the constant in mathematical expression.



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B) 4/9 is correct

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Resuelve las siguientes ecuaciones: -x^2 - x =0 -X^2 + 12x = 0 3X^2 - 9x = 0 X^2 - 2x - 3 = 0
vaieri [72.5K]

Responder:

<em>a) 1 </em>

<em>b) 12 </em>

<em>c) 3 </em>

<em>d) -1 y 3 </em>

Explicación paso a paso:

Dadas las siguientes ecuaciones;

a) x²-x =0

x² = 0+x

x² = x

x = 1

b) -x²+12x = 0

-x² = -12x

x² = 12x

x = 12

c) 3x² - 9x = 0

Suma 9x a ambos lados

3x²-9x+9x = 0+9x

3x² = 9x

3x = 9

x = 9/3

x = 3

d) x²-2x-3 = 0

x²-3x+x-3 = 0

x(x-3)+1(x-3) = 0

(x+1)(x-3) = 0

x+1 = 0 y x-3 = 0

x = -1 y 3

4 0
2 years ago
Jan's age is 3 years less than twice Tritt's age. The sum of their ages is 30. Find their ages.
AysviL [449]
J + t = 30
j = 2t - 3

sub eq 2 into eq 1
2t - 3 + t = 30...combine like terms
3t - 3 = 30...add 3 to both sides
3t = 30 + 3
3t = 33...divide both sides by 3
t = 33/3
t = 11 <=== Tritt is 11

j = 2t - 3
j = 2(11) - 3
j = 22 - 3
j = 19 <== Jan is 19
5 0
3 years ago
Read 2 more answers
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