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solong [7]
3 years ago
14

Help me problem in photo

Mathematics
1 answer:
Blababa [14]3 years ago
3 0
B and D because a- (-b)= a+b 
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Solve 7x-2y=11 for y
Leni [432]

Answer:

y = 7/2x -11/2

Step-by-step explanation:

7x-2y=11

Subtract 7x from each side

7x-2y -7x = -7x+11

-2y = -7x+11

Divide each side by -2

-2y/-2 = -7x/-2 +11/-2

y = 7/2x -11/2

8 0
3 years ago
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If f(x) = 0.8(2 – x), what is the value of f(–2)?
Sergio039 [100]
With functions, you take the number that is in the ( ), so we have f(-2), and take the fomula f(x) = 0.8(2 – x) and everywhere you see an 'x' replace it with the -2 f(–2)=0.8(2 – (-2)) 

We will have to work with the expression of 0.8(2-(-2) When you want to evaluate these types of expressions, you want to use the Order of Operations: Parentheses, Exponents, Multiplication, Division, Addition, Subtraction. First we have to evaluate the parentheses. What is 2-(-2)
 its 4.

ok now you got 0.8 (4)

 Now we have the remains of 0.8(4). If a number is within the parenthesis, then it means that we have to multiply the number inside with the number that is outside. What is 0.8*4 its 3.2 soooo your answer is going to be

3.2
5 0
3 years ago
1/3 is greater than what other fractions
Novosadov [1.4K]
As 1/3 = 2/6 = 3/9 = 4/12

and 2/6 is greater than 1/6
    3/9 is greater than 2/9
     etc..

So

1/3 is greater than 1/6 ; 2/9 ; ...
7 0
3 years ago
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How high is the end of the ladder against the building? Round to the nearest tenth if necessary.
kifflom [539]
H(ft) = √ (13² - 4²) = 12.4

It is a right-angled triangle and the Pythagorean theorem applies.

THEOREMA (by Pythagoras):
Given a right-angled triangle ABCABC as in the figure, then the relation is valida2 + b2 = c2a2 + b2 = c2where cc is the hypotenuse of the triangle and b, ab, a are the cathets.

h(ft) = √ (13² - 4²) = 12.4



6 0
3 years ago
(I need help again)
zheka24 [161]

Answer:

5

Step-by-step explanation:

on a graph all of the regular numbers are on the left

5 0
3 years ago
Read 2 more answers
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