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Rufina [12.5K]
3 years ago
10

A+b+c+d=770 a+b=c+d a-b=49 c-d=211 Find numbers.

Mathematics
1 answer:
allochka39001 [22]3 years ago
6 0
A+b = c+d
a+b = 770/2    ( a+b+c+d = 770)
a+b = 385
c+d = 385

a+b+a-b = 385+49
         2a  = 434
           a  = 434/2
           a  = 217
 a-b=49
217-49= b
b         = 168

c+d+c-d = 385+211
         2c = 596
           c = 596/2
           c = 298

c-d = 211
c-211= d
298-211 = d
           d  = 87

Therefore, a=217, b=168, c=298, d=87

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The weights of 3 apples in a box of 36 apples are 115g, 121 g and 118 g respectively. (a) What is the average weight of 3 apples
Liono4ka [1.6K]

Answer:

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6 0
3 years ago
A car traveled 3/4 mle in one minute at constant speed what is the speed of the car per hour
Maurinko [17]

Distance traveled in one minute = \frac{3}{4} miles

As the speed is constant, after 1 hour or 60 minutes, its speed will be =

\frac{3}{4}\times60

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Hence, the speed of the car is 45 miles per hour.

7 0
4 years ago
4/5x=56 Please help, and explain how you got it
Scrat [10]
To solve this, we must isolate x (have it by itself).

4/5x = 56

Multiply each side by 5x.

4/5x(5x) = 56(5x)

Divide each side by 280.

4/280 = 280x/280

Solve.

0.014 = x

0.014 can also be written as 1/70

:)

5 0
3 years ago
You need 2 cups of orange juice to make 3 quarts of punch. how much cups of orange juice do you need to make 3 gallons of punch?
AleksAgata [21]
To answer the question above, convert first the gallons to quarts. Each gallon is composed of 4 quarts such that 3 gallons is equal to 12 quarts. Dividing this value by 3 and multiplying by 2, the answer would be 8. Thus, 8 cups will be needed to make the juice. 
7 0
3 years ago
What is the slope of the line represented by the points in the table?
Rudiy27

Answer:

Positive 0.05

Step-by-step explanation:

(-1,-.3) (1, -.2)

m=\frac{-.2-(-.3)}{1-(-1)} =\frac{-.2+.3}{1+1} =\frac{0.1}{2} =0.05

Hope this helps

3 0
3 years ago
Read 2 more answers
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