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fgiga [73]
4 years ago
9

If 7x+2=5x, what is the value of -x?

Mathematics
2 answers:
yaroslaw [1]4 years ago
4 0
The value of x is -1.
7x+2=5x
2=-2x
-1=x
fomenos4 years ago
3 0

Answer:

x = -1

Step-by-step explanation:

We must solve 7x+2=5x for x.  To do this, subtract 5x from both sides:

2x + 2 = 0, or

2x = -2, or

x = -1

The solution is x = -1.

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3. Amanda's computer weighs 56 ounces.<br> How many pounds does it weigh?
tino4ka555 [31]

The answer is 3.5 pounds

8 0
3 years ago
Translation: 6 units right and 3 units down<br> s(-3, 3), C(-1, 4), W(-2,-1)
sdas [7]
S (3, 0)
C (5, 1)
W (4, -4)

Explanation
You take the first number and add 6 to it and you get the new number and then you take the second number and subtract 3 from it

S: -3 + 6 = 3
S- 3 - 3 = 0

C: -1 + 6 = 5
C: 4 - 3 = 1

W: -2 + 6 = 4
W: -1 - 3 = -4
3 0
3 years ago
On a two week job a repairman works a total of 70 hours. He charges 75$ plus 40$ per hour. An equation shows this relationship w
Viefleur [7K]

Answer:

Slope = 40

Step-by-step explanation:

Time spent = 70 hours(given)

Fixed charge = $75 (given)

x = Total number of hours (given)

Variable charge = $40 * Total number of hours.

Variable charge = $40x

Fee charged, y = Variable charge + Fixed charge

y = 40x + 75 ($)

The equation of a straight line is given as: y = mx + c

where m = slope

Comparing it with the equation above, m = 40

4 0
3 years ago
It has been observed that, during various forms of social competition, men experience an increase in testosterone levels. A 2018
svetoff [14.1K]

Answer:

= ( -4.725, 6.945) pg/ml

Therefore at 95% confidence interval (a,b) = ( -4.725, 6.945) pg/ml

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

x+/-zr/√n

Given that;

Mean gain x = 1.11 pg/ml

Standard deviation r = 15.18 pg/ml

Number of samples n = 26

Confidence interval = 95%

z(at 95% confidence) = 1.96

Substituting the values we have;

1.11+/-1.96(15.18/√26)

1.11+/-1.96(2.977042931397)

1.11+/-5.835004145539

1.11+/-5.835

= ( -4.725, 6.945) pg/ml

Therefore at 95% confidence interval (a,b) = ( -4.725, 6.945) pg/ml

7 0
3 years ago
What is the area of the Largest square (BRAINLIST WILL BE GIVE IF ANSWER CORRECT)
Alenkinab [10]

Answer:

100units^2

Step-by-step explanation:

Using pythagoras theorem, it states that 36+64= area of the unknown

3 0
3 years ago
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