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Nadya [2.5K]
3 years ago
12

Explain how you know weather to add or subtract when you use the distributive property to multiply

Mathematics
2 answers:
lana66690 [7]3 years ago
7 0
Use the phrase pemdas

it shows the order you solve. parenthesis, exponents, multiplication, division, addition, and then subtraction. ask me if you need any other help!
tester [92]3 years ago
6 0
You would know by how the problem is written for example if a equation is written like this (2+3)5 you add 2+3 first then multiply by 5 to get 25 therefore you add first
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The distance a butterfly flies varies directly with it's time in the air. If a butterfly travels 264 ft in 0.5 min, how far will
Eva8 [605]

Answer:

The butterfly travels 660 ft in 1.25 min.

Step-by-step explanation:

If the distance, d, a butterfly flies varies directly as the time,t in the air, then we can write the mathematical statement.

d\propto t

If we introduce the constant of proportionality, we obtain;

d=kt

According to the question, when d=264\:ft, t=0.5\:min.

We substitute these values to obtain;

264=0.5k

\Rightarrow k=\frac{264}{0.5}

\Rightarrow k=528

The direct variation equation now becomes

d=528t

When t=1.25\:min

d=528(1.25)

d=660

Therefore the butterfly will travel 660 ft in 1.25 min.

7 0
3 years ago
Which line segment is an altitude of ΔVWY?
Paha777 [63]

Answer:

x

Step-by-step explanation:

just trust I know the x is the altitude

3 0
3 years ago
87.45 x 8.9 =<br><br> show ur work please<br><br> good points and ill count u ask BRAINILIST
777dan777 [17]

Answer:

778.305

Step-by-step explanation:

87.45 x 8.9 =778.305

7 0
3 years ago
Read 2 more answers
a physics student stands at the top of a hill that has an elevation of 56 meters. He throws a rock and it goes up in the air and
babunello [35]
The answer is 57.04 meters. 
Solution:
The height y of the rock above the ground as a function of the horizontal distance x from the starting point on top of the hill can be modeled by the equation 
     y = -0.04x^2 + 1.3x + 56

We now set this equation equal to zero because the height of the ground where the rock will land is zero:
     0 = -0.04x^2 + 1.3x + 56

Since we have a quadratic equation, we can calculate for the horizontal distance x by using the quadratic formula     
     x = [-b ± sqrt(b^2 - 4ac)] / 2a      
     x = {-1.3 ± sqrt[1.3^2 - 4(-0.04)(56)]} / 2(-0.04)     
     x = (-1.3 ± sqrt(10.65)) / (-0.08)     
     x =  -24.54 meters or  57.04 meters
There are two solutions for x but one is negative, so we choose the positive value. 
5 0
3 years ago
George drove 240 miles to his grandmother's house. The graph below shows the relationship between the distance he traveled and t
Advocard [28]

Answer:

There is no graph but I can infer that if time is on the x axis it would be C and if distance is on the x axis it would be B

Step-by-step explanation:

5 0
3 years ago
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