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3 years ago

I need help with this.

Mathematics

2 answers:

choli [55]3 years ago

7 0

Answer:

√125

Step-by-step explanation:

(0,0) (10,5)=(x1,y1) (x2,y2)

√(x2-x1)²+(y2-y1)²

√(10-0)²+(5-0)²

√10²+5²

√100+25

√125

svet-max [94.6K]3 years ago

3 0

Answer:

y = $\frac{1}{2}$ x

Step-by-step explanation:

identify two points on the line: (2, 1) (4, 2) to find the slope( $\frac{y2 - y1 }{x2 - x1}$ ) for the line

=> $\frac{2- 1}{4-2}$ => $\frac{1}{2}$

find the y-intercept:

=> 0

substitute the slope and y-intercept into the equation y = mx + b

slope ↑ ↑ y-intercept

=> y = $\frac{1}{2}$ x + 0

=> y = $\frac{1}{2}$ x

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Step-by-step explanation:

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3 years ago

Which of the following statements best represents the relationship between a relation and a function.

melamori03 [73]

Answer:

1. A function is always a relation but a relation is not always a function.

Step-by-step explanation:

A function is a relation in which each element of the domain is mapped to one element of the range.

This means that every function is a relation, but not every relation is a function.

5 0

3 years ago

Please help...its for Delta math. will mark brainliest and I will be ur friend♥

REY [17]

The exponential functions change is represented by decay and the percentage rate of decrease is 1.00619%.

Step-by-step explanation:

Step 1:

To determine if the function represents growth or decay, we substitute values to x.

If the values increase with an increase of x, it represents growth.

If the values decrease with an increase of x, it represents decay.

Step 2:

If $x= 10,$ $y = 1,300 (\frac{1}{2})^{\frac{10}{69} } = 1,300 (0.9044) = 1,175.72.$

If $x=11,$ $y = 1,300 (\frac{1}{2})^{\frac{11}{69} } = 1,300 (0.8953) = 1,163.89.$

So as x increases the value of y decreases, so it represents decay.

Step 3:

The percentage rate of change is determined by dividing the difference of two consecutive values by the first value.

The percentage rate of change $= \frac{y(x=11) - y(x=10)}{y(x=10)}.$

Substituting the values, we get

The percentage rate of change $=\frac{1,175.72-1,163.89}{1,175.72}(100) = 1.00619\%$ .

As the values of y decrease with an increase in x, it is the percent decrease per unit.

5 0

3 years ago

Read 2 more answers

Helpppppppppppppppppppppppppppppp

Diano4ka-milaya [45]

In this case it is to find the roots of the polynomial.
We have then:
2x ^ 2-5x + 1 = 3
Rewriting:
2x ^ 2-5x-2 = 0
Applying resolver we have
x = (- b +/- root (b ^ 2 - 4ac)) / (2a)
Substituting values:
x = (- (- 5) +/- root ((- 5) ^ 2 - 4 (2) (- 2))) / (2 (2))
x = (- (- 5) +/- root ((25 + 16)) / (2 (2))
x = (5 +/- root (41))) / (4)
x = ((5/4) +/- (root (41)) / 4)
Answer:
x = ((5/4) +/- (root (41)) / 4)
(option 4)

8 0

3 years ago

What is 9x-5-8+x= what

Elanso [62]

Hi there!

First you simplify.

Simplified = 9x+(−5)+(−8)+x

Then you combine the like terms.

9x+(−5)+(−8)+x (*-5 and -8 are like terms) (9x and x are like terms)

Combined it's~ (9x+x)+(−5+−8)

Solve and that comes to 10x+−13 which is your answer. :)

Hope this helps.

3 0

3 years ago