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Elis [28]
2 years ago
8

What is the slope of y = -x + 7?

Mathematics
1 answer:
JulijaS [17]2 years ago
7 0

Answer:

The slope is -1

Step-by-step explanation:

The slope is always the number in front of the x.

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The angles of elevation to an airplane from two points A and B on level ground are 58° and 76°, respectively. The points A and B
statuscvo [17]

Answer:

90

Step-by-step explanation:

45x2=90

6 0
2 years ago
The area of a field shaped like a right triangle is 750yd^2.One leg of the field is fenced with wood costing $5/yd. the remainde
Elenna [48]
Assume that
 a and b = the two legs of the right triangle. 
 c =  the hypotenuse.

The area of the right triangle is 750 yd², therefore
(1/2)*a*b = 750
ab = 1500               (1)

The perimeter is 150yd, therefore
a + b + c = 150         (2)

Let the side fenced with wood be a, at $5/yd.  Sides b and c are fenced with steel at $10/y. The total cost is $1200, therefore
 5a + 10b + 10c = 1200            
or
a + 2b + 2c = 240         (3)

From (2), obtain 
c = 150 - a - b              (4)

Substitute (4) into (3)
a + 2b + 2(150 - a - b) = 240
-a + 300 = 240
a = 60

From (1), obtain
60b = 1500
b = 25

From (4), obtain
c = 150 - 60 - 25 = 65

Answer:
A. The length of the leg fenced with wood is 60 yd.
B.  The length of the leg fenced with steel is 25 yd.


5 0
3 years ago
I need this please 64 points!
myrzilka [38]

Answer:

None. Wanda's work is correct.

Step-by-step explanation:

The first is correct.

3 0
3 years ago
Read 2 more answers
Which shows the expression below in simplified form? (2.2 × 1012) + (1.7 × 109)
AleksAgata [21]
<span>(2.2 × 1012) + (1.7 × 109) = 2411.7</span>
7 0
3 years ago
Read 2 more answers
Expand the expression. Fill in the blanks<br><br> 3(n + 7)<br><br> n +( <br> )7
morpeh [17]
3n + 21 is the answer
4 0
2 years ago
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