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2 years ago

I need help with this question please

Mathematics

1 answer:

Art [367]2 years ago

8 0

9514 1404 393

Answer:

Step-by-step explanation:

The sum of the measures of the two given arcs is 180°, the measure of semicircle ADC. Using this fact, we can find x and the measure of DC.

AD +DC = 180

(19x -49) +(5x +37) = 180

24x = 192 . . . . . . . . . . . add 12, simplify

x = 8 . . . . . . . . . . divide by 24

Then the measure of DC is ...

DC = 5x +37 = 5(8) +37 = 40 +37

DC = 77

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You are building a ramp for your grandparent’s house. The ramp will replace the steps that go to their front door which is 3 fee

Crank

Answer:

10.4403 or the square root of 109

Step-by-step explanation:

We do this by finding the height (3) and squaring it then the base (10) and squaring that, this sets up the Pythagorean theorem which is A^2+B^2=C^2 then you square C to find it's value

4 0

2 years ago

$239.16 with a 5% sales tax

deff fn [24]

Price would be 251.12 tax is 11.96

8 0

3 years ago

what is the equation of the line that is parallel to the line y=2x+7 and passes through the point (-2,1)

vichka [17]

The line is parallel so the slope is the same. So the slope = 2
Using a point-slope equation we have
y-y1 = 2(x-x1)
plug in the points
y-1 = 2(x-(-2))
=> y = 2x + 4 - 1
=> y = 2x +3

8 0

3 years ago

Suppose the linear regression line y = 4.009x - 77.531 predicts a pizza

fredd [130]

Answer:

Option C, 1225

Step-by-step explanation:

y=4.009x-77.531

selling 325 pizzas, so x=325, now putting the value of x in the equation,

y=4.009×325-77.531

or, y=1225.394

y = 1225.394, which is the profit, if we approximate it to the nearest value, it's $1225

7 0

2 years ago

Determine if the graph is a function then state the domain and range.

nignag [31]

<h3>Explanation</h3>

A function is a set of relation that doesn't have repetitive domain. If we want to know if a graph is function or not, we have to do the line test.

Line Test

Draw a vertical line. Make sure that a line passes through a graph.
See if a line intercepts a graph more than one point or just only one.

Result

If a line intercepts a graph more than one point, it is not a function.

However, if a line only intercepts a graph just one point, it is indeed a function.

The given graph from the question is a function because it passes line test.

Domain and Range

Domain is the set of all x-values, meaning we only focus on x-axis or x-value only.

Range is the set of all y-values. We only focus on y-value or y-axis for Range.

Determine Domain from Graph

We can simply say that the domain is from starting domain or x-coordinate point to end x-coordinate point. For example, if a graph starts at x = -4 and ends at x = 2, we can say that - 4<=x=2.

Determine Range from Graph

Similar to Domain except Range starts from the minimum value or point to the maximum point or value. For example if a graph starts at min point = 6 and max point = 9. We can say that 6<=y<=9.

From the graph, the domain starts from negative infinity to positive infinity. Meaning that x can be any numbers. Hence, the domain is set of all real numbers. For range, the minimum value is 0 and max value is positive infinity. Therefore we write y>=0.

<h3>Answer</h3>

 $\begin{cases} x \in \mathbb{R} \\ y \geqslant 0 \end{cases}$ 

Domain is set of all real numbers.

Range is greater or equal to 0.

8 0

2 years ago

I need help with this question please​

I need help with this question please