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astraxan [27]
3 years ago
9

Dan is watching the birds in his backyard. Of the birds he watches, 9 of them, or 45%, are sparrows. How may birds are in his ba

ckyard?
Mathematics
2 answers:
Marat540 [252]3 years ago
8 0

Answer:

20 birds in the backyard.

Step-by-step explanation:

andrezito [222]3 years ago
6 0

Answer:

5

Step-by-step explanation:45 divided by 9 is 5

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Please Help!!!
Viefleur [7K]

Answer:

Numeric expressions apply operations to numbers. For example, 2(3 + 8) is a numeric expression. Algebraic expressions include at least one variable and at least one operation (addition, subtraction, multiplication, division). For example, 2(x + 8y) is an algebraic expression.

Step-by-step explanation:

8 0
3 years ago
What is the slope of the line that passes through the points ( − 1 , − 7 ) (−1,−7) and ( 1 , − 13 ) (1,−13)? Write your answer i
Paraphin [41]

Answer:

y = -3x -10

Step-by-step explanation:

Slope-intercept formula: \frac{y_2-y_2}{x_2-x_1}

Find slope of  (−1, −7) and (1, -13)

\frac{y_2-y_2}{x_2-x_1}\\\\\\frac{-13-(-7)}{1-(-1)}\\\\\\frac{-6}{2}\\\\\-3

y = mx + b

y = -3x +b

y = -3x +b\\-7 = -3(-1) + b\\-7 = 3 +b\\-3   -3\\-10 = b

y = -3x -10

Hope this helps!

3 0
2 years ago
Choose the property that justifies the following statement. If x = 2 and x + y = 3, then 2 + y = 3.
user100 [1]

  .................................

4 0
3 years ago
PLEASE HELP FAST QUESTION IN PHOTO WILL PICK <br> IF CORRECT
Elenna [48]
4 2/11 = 4.1818181

sqrt5 = 2.2360679......

3/16 = 0.1875

answer:
 3/16 terminates ( it only has 4 numbers)

4 2/11 don't terminate but keeps repeating 

sqrt5 doesn't terminate or repeat


5 0
3 years ago
What is the domain and range for:<br> y = arcsin(tanx)
Semmy [17]
The graph looks like this, on the enclosed pic:
One feature is that it's periodic and torn (has cut-off points), meaning the domain is the same as in case of tan(x): x€R and x =/= π/2+πn.
The range equals the range of arcsin(x): -π/2<=y<=π/2 OR y€[-π/2;π/2]
Hope could understand and if it helped! :)

7 0
3 years ago
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