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MrRa [10]
3 years ago
6

What is value of the expression -2r/5s if r = -1/4 and s = 4/5?

Mathematics
2 answers:
Brut [27]3 years ago
6 0

Answer:

1/8

Step-by-step explanation:

Substitute -1/4 for r and 4/5 for s in -2r/5s:

-2(-1/4) / (5*4/5) = 1/2 / 4 = 1/8 (answer)


Tanzania [10]3 years ago
3 0

I don't know if this is right but 0.125

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Y=3x^2. -12x+6

If x= 0 then y= 3•0^2 -12•0+6=6
X=0, y=6

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What is the slope of the line segment AB? (5 points) A.2 B.−2 C.−1 over 2 D.1 over 2
Katen [24]
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If Jake buys 3 new shirts, how many of them would you expect to be t-shirts, and how many would you expect to be collared?
Sophie [7]

Answer:

2 t-shirts ; 1 collar shirt

Step-by-step explanation:

We need to first obtain the ratio of T - shirts to collar shirts :

T - shirts = 10

Collar shirts = 5

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Hence, using the ratio obtained ; if Jake buys 3 new shirts :

Number of T-shirts :

(Ratio of t-shirts / total ratio) * new t-shirts

2/3 * 3 = 2 t-shirts

Collar shirts :

1/3 * 3 = 1

2 t-shirts ; 1 collar shirt

4 0
3 years ago
1. What is the value of the expression<br> 4X (4 – 2) + 6?
Snezhnost [94]

Answer:

8x+6

Step-by-step explanation:

4x (4-2)=2

4X*2+6

8x+6

6 0
3 years ago
Read 2 more answers
Country ​A, Country​ B, and Country C won a total of 130 medals. Country B won 10 more medals than Country C. Country A won 38 m
snow_lady [41]

Answer:

Country ​A = 84

Country​ B = 28

Country C = 18

Step-by-step explanation:

Country ​A, Country​ B, and Country C won a total of 130 medals;

A + B + C = 130 ......1

Country B won 10 more medals than Country C;

B = C + 10 .......2

Country A won 38 more medals than the total amount won by the other two;

A = B + C + 38 ........3

Substituting equation 3 to 1;

(B+C+38) + B+C = 130

2B + 2C + 38 = 130 .......4

Substituting equation 2 into 4;

2(C+10) + 2C + 38 = 130

4C + 58 = 130

4C = 130-58 = 72

C = 72/4 = 18

B = C + 10 = 18 + 10 = 28

A = B + C + 38 = 18 + 28 + 38 = 84

Country ​A = 84

Country​ B = 28

Country C = 18

8 0
3 years ago
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