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velikii [3]
3 years ago
11

A teacher gave two tests. 59% passed both tests. 78% passed the first test. What

Mathematics
2 answers:
qwelly [4]3 years ago
6 0
The answer would be A
Elenna [48]3 years ago
5 0
The answer is 76% or A
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in 2011 there were 3223 sea otters in Monterey Bay California the bay is approximately 77 mi.² to the nearest whole number what
poizon [28]

Answer:

42 sea otters per mi2

Step-by-step explanation:

5 0
3 years ago
there are 13 animals in a barn. some are ducks and some are pigs. there are 40 legs in all. how many of each animal are there?
konstantin123 [22]
Let X be chickens
Let Y be pigs,
then x+y=13
the animals have 2x+4y legs,
 so 2x+4y=40
The system of the equations
[X+y=13
[2x+4y=40
Divide the second equation by 2
[x+y=13
[x+2y=20
subtract the first equation from the second one
y=20-13
y-7 pigs
substitute y=7 into the first equation
x+7=13
x=13-7
x=6 chickens
6 0
3 years ago
What is the excluded value? y2-y+5/y+4
WITCHER [35]
The given term is: \frac{ y^{2}-y+5 }{y+4} 

Since here, the numerator i.e. y^{2}-y+5 cannot be factorized. 

SO, the only excluded value is found on the basis of the denominator. The denominator should not be equal to 0, otherwise, the fraction will turn out to be zero.
SO, if y \neq -4, then denominator will not be zero.
Therefore, the excluded value is -4


5 0
3 years ago
Read 2 more answers
(ruu ule
boyakko [2]

Answer:

y-3 = 2x

2x-y+3=0 we have

slope

m =- coefficient of x/coefficient of y=-2/-3=2/3 is a slope..

8 0
3 years ago
Use words to describe what a variable is
Svet_ta [14]

Answer:“A variable is a quantity that may change within the context of a mathematical problem or experiment.” Examples of variables are x, e, and q. In the expression, 5 + X =8, X is the variable.

Step-by-step explanation: I hope you found this helpful.

5 0
3 years ago
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