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Tomtit [17]
3 years ago
13

What is the measure of the smallest angle in the triangle whose vertices are D(4,1), E(4, -2), and F(-2, -2)? Round to the neare

st degree. (Enter the number only.)
Mathematics
1 answer:
Diano4ka-milaya [45]3 years ago
8 0
27 
I hope this is right
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What value of "a" makes the system 3x-y=17 and ax+y=-7 have no solution?
Norma-Jean [14]

Answer:

y=-7-ax

3x-(-7-ax)=17

3x+7+ax=17

3x+ax=10

x(3+a)=10

x=10,3+a=10 a=10-3 a=7

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3 years ago
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A math test is worth 100 points and has 38 problems. Each problem is worth either 5 points or 2 points. How many problems of eac
Natasha_Volkova [10]
Let x be the number of 5 points question.
Let y be the number of 2 points question.

Total number of questions is 38
x + y = 38 

Total points is 100
5x + 2y = 100

x + y = 38 ------------- (1)
5x + 2y = 100 ---------(2)

From (1):
x + y = 38
x = 38 - y -------------- sub into (2)
5(38 - y) + 2y = 100
190 - 5y + 2y = 100
3y = 90
y = 30 ------------------ sub into (1)
x + 30 = 38
x = 38 - 30
x = 8

There are 8 5-point questions and 30 2-point questions
5 0
3 years ago
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Use the order of operations to find the value of the expression.
Artyom0805 [142]

Answer: D 44

Step-by-step explanation:

8 0
1 year ago
(9x + 5) - (6x - 8)=
grandymaker [24]
(9x + 5) - (6x - 8)
(9x + 5) - 6x + 8
SOLUTION—3x + 13
8 0
2 years ago
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