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xxMikexx [17]
2 years ago
5

Find the constant of proportionality and unit rate for the data in the table. Then write the equation to represent the relations

hip between time t and distance d
Time Distance
2 hrs 90 miles
3 hrs 135 miles
5 hrs 225 miles
6 hrs 270 miles

I dont understand how to do this kind of math.Please help
Mathematics
1 answer:
Hatshy [7]2 years ago
3 0

You should set up an X and Y table. Make time X and Distance Y. (the table is like a cross: on the left top put x and left top put y. Then under the line list the x and y numbers given in order.) Then find the "slope" which is y/x  (rise over run) then you get the increase rate of 45 mph. The relation between them would be D=45t 
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A stained glass window is going to be installed in a semi-circular opening, which is above a 30 inch wide door. If the stained g
xenn [34]
The answer is <span>$494.55</span>

Let's first imagine a circle and calculate its area and then reduce it in half for the area of a semi-circle. Since this opening is above <span>a 30-inch wide door, the circle will have a diameter of 30 inches.
The area of the circle (A) is:
A = </span>π · r²
where:
π = 3.14
r - radius: r = diameter ÷ 2 = 30 ÷ 2 = 15 inches

So, the area of the circle is:
A = π · r² = 3.14 · 15² = 706.5 inches²

The area of the semicircle is half of the area of the circle:
A1 = A ÷ 2 = 706.5 ÷ 2 = 353.25 inches²

Since  the stained glass window costs $1.40 <span>per square inch, for 353.25 square inches it will cost $494.55:
353.25 square inches * 1.40 $/square inch = $494.55</span>
4 0
3 years ago
A plus 5 equals negative 5a plus 5
jenyasd209 [6]
A+5=5a+5   Subtract a from each side
5=5a+5       Subtract 5 from each side
0=5a           Divide each side by the number before the variable to get it alone.
--- ---
5   5
a=0
4 0
2 years ago
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Look at the triangle ABC. What length of side AB of the triangle? a.2 b.square root of 20 c.6 d.square root of 38
Y_Kistochka [10]
I think is b cuz I know foe a fact;)
4 0
3 years ago
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A group of artists is selling small prints to raise money for charity. They sell p prints, and make a profit of f(p) on the sale
liraira [26]

The correct answer is is D) If the group sells 15 prints they will loose $85.

To figure out which statement is true, we have to evaluate the function ,

p(x)=17x-340 for all the values given in options (A)-(D).  A negative output represents a loss and  a positive output will represent a profit.

In A p=12 so f(12)=17\times 12-340=-136. In this case we gather that if they sell 12 prints, they will make a loss of $136. This tells us that option A is wrong.

In B, p=28 so f(28)=17\times 28-340=136. In this case we gather that if they sell 28 prints, they make a profit of $136. This tells us that option  B is wrong.

In C, p=35 so f(35)=17\times 35-340=225. In this case we gather that if they sell 35 prints, they make a profit of $225. This tells us that option  C is wrong.

Lastly, p=15 so f(15)=17\times 15-340=-85. In this case we gather that if they sell 28 prints, they make a loss of 85 dollars. From this we gather that D is the correct option.

5 0
3 years ago
PLEASE HELP!! ITS A TEST!!
irakobra [83]

Answer:

40°

Step-by-step explanation:

A parallelogram is a quadrilateral (a four-sided object) with parallel sides

Some of the characteristics of a parallelogram includes:

1. Opposite sides and angles are congruent.

2. Opposite angels are congruent  

3. Consecutive angles are supplementary  

4. The diagonals bisect each other

Angle DBC = ABD = 35 (alternate angles are equal)

Angle ADB = 180 - 35 - 105 = 40

I subtracted from 180 because sum of angles in a triangle is equal to 180

3 0
2 years ago
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