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4 years ago

Which relationship between x and y in the equation shows a proportional relationship y=12x y=12/x y=2x+6 y=x/2+3

1 answer:

5 0

Y = 12x . . . is a proportional relationship

_____
y = 12/x is an inverse relationship

y = 2x+6
y = x/2 +3 are both linear relationships, but not proportional relationships.

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Let n equal a certain number. If five times the sum of the number and -1 is equal to 15 less than the product of 3 and the numbe

Ivan

$5(n+(-1))=3n-15\\
5(n-1)=3n-15\\
5n-5=3n-15\\
5n-3n=-15+5\\
2n=-10\\
n=-5\\\\
A=P+PRT\\
A=P(1+RT)\\
P=\dfrac{A}{1+RT}$

3 0

4 years ago

A fruit stand sells apples, peaches and tomatoes. Today, they sold 4 apples for every 5 peaches. They sold 2 peaches for every 3

Brrunno [24]

Answer:

He sold 32 apples, 40 peaches and 60 apples.

Step-by-step explanation:

We are given that

4 apples are sold every 5 peaches and

3 tomatoes are sold every 2 peaches.

i.e. the ratio is apples: peaches = 4 : 5 ...... (1)

and the ratio peaches: tomatoes = 2 : 3 ...... (2)

Peaches are the common link here in both the ratio terms.

Let us make the peaches value in both the <em>ratio as 10 </em>to make it equal in both the ratio terms.

Multiply (1) by 2 and (2) by 5:

The ratio becomes;

apples:peaches = 8:10

peaches: tomatoes = 10:15

In other words, the ratio becomes:

apples:peaches:tomatoes = 8:10:15

Let the number of apples = $8x$

Let the number of peaches = $10x\\$

Let the number of tomatoes = $15x$

We are given that total fruits are = 132

$\Rightarrow 8x+10x+15x = 132\\\Rightarrow 33x = 132\\\Rightarrow x =4\\$

So, number of apples sold = $8 \times 4 = 32$

Number of peaches sold = $10 \times 4 = 40$

Number of tomatoes sold = $15 \times 4 = 60$

7 0

3 years ago

Please answer 6 and 7

nexus9112 [7]

Number 6 is 15 7 is 3

5 0

3 years ago

Two candidates ran for class president. The candidate that won received 80% of the 320 total votes. How many votes did the winni

Ede4ka [16]

Answer:

256

80÷100×320=256

80÷100=0.8

0.8×320=256

3 0

2 years ago

Approximate 17.850 litres to the nearest 1/2 litre

Alborosie

Approximating 17.850 litres with a precision to 1/2 (or 0.5) litre, you look at the number 8, and see if it lower or higher than 5. Since it is higher, you round it up, meaning you have 18 litres.

7 0

3 years ago