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GalinKa [24]
3 years ago
10

Solve the equations.1/2x+6= 16​

Mathematics
1 answer:
ladessa [460]3 years ago
4 0

Answer:

x = 20

Step-by-step explanation:

x in (-oo:+oo)

(1/2)*x+6 = 16 // - 16

(1/2)*x-16+6 = 0

1/2*x-10 = 0 // + 10

1/2*x = 10 // : 1/2

x = 10/1/2

x = 20

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Which of the following is the solution to the equation 4/5 x = - 1/5?
Montano1993 [528]
The correct answer would be -1/4. I am sorry that is not one of the choice but by doing the math correctly, -1/4 is the correct answer.

6 0
3 years ago
A store owner makes a profit of $54 when he sells 9 jackets.How many jackets should he sell to make a profit of $270? jackets
Goryan [66]
First you have to find the cost of each jacket.
54/9=6 Each jacket cost $6
Then you get the total profit and divide that by the cost of each jacket.
270/6=45 (45 jackets)
Multiply 45 jackets by the cost ($6)
45*6=$270. 
The answer is 45.
3 0
4 years ago
If LR = 12 and LP = 7, find PR. Explain.
sergiy2304 [10]

Answer:

  PR = 5 because LP + PR = LR according to the Segment Addition Postulate, and 7 + 5 = 12 using substitution

Step-by-step explanation:

The naming of the segments suggests that point P is between L and R, so that ...

  LP + PR = LR

This corresponds to the last choice.

_____

<em>Comments on the alternate interpretation</em>

On the other hand, if point L is between P and R, then the segments are PL and LR. The Segment Addition Postulate would tell you that ...

  PL + LR = PR

The Reflexive Property of Congruence would tell you that PL = LP. The Substitution Property would tell you LP can be substituted into this equation, making it ...

  LP + LR = PR

and by the commutative property, ...

  LR + LP = PR.

Multiple properties of addition and congruence are involved with this interpretation, which more or less matches the third choice. That is, the simple explanation of answer choice 3, by itself, is insufficient to explain why the length of PR should be considered to be 19, not 5.

5 0
3 years ago
Read 2 more answers
F(x)=-3x+4; find f(7)
ki77a [65]

Answer:

-17

Step-by-step explanation:

f(7)=-3(7)+4=-17

3 0
4 years ago
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There are 42 more red marbles in a jar than there are white marbles. If there are 238 marbles in the jar, how many of them are r
Andrej [43]

Answer:

Red: 161 White: 77

Step-by-step explanation:

Given there are 238 marbles in a jar, and there are 42 more red marbles than white marbles, we need to divide the number of marbles by two, as there are, presumably, two colors.

238 / 2 = 119

After doing this, we subtract 42 from one of the two 119s, and we add 42 to the other.

119 - 42 = 77

119 + 42 = 161

The value with 42 added is the red marble count, and the value with 42 subtracted is the white marble count.

8 0
3 years ago
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