3 years ago

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Mathematics

1 answer:

Marina86 [1]3 years ago

8 0

I think the best answer is A.

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3kg of apples and 8kg of grapes costs €7.60 in total 5kg of apples and 3kg of grapes costs €7.50in total work out the costs of a

ki77a [65]

Answer:

1kg of apple : €0.50

1kgof grapes : €1.20

Step-by-step explanation:

15kg of apples and 40kg of grapes costs €38

15kg of apples and 9kg of grapes costs €22.50

38 - 22.50 = 15.5

40 - 9 = 31

15.5 ÷ 31 = 0.5 ( 1kg of grapes )

0.5 × 3 = 1.5

7.5 - 1.5 = 6

6 ÷ 5 = 1.2 ( 1kg of apples )

4 0

3 years ago

Five quarts of oil and an oil filter cost $20.35. However, with a coupon, these items may be purchased for $4.43 less. What is t

kupik [55]

Hey there :)

5 quarts of oil and an oil filter - $20.35
With couple - $4.43 less
Final cost?

We subtract 4.43 from $20.35
Why? That's the expected amount [ without a coupon ]

20.35
- 4.43
15.92

The final cost will be $15.92

4 0

3 years ago

Find the rule the pattern is using 4,20,100,50

Rudik [331]

If the last number is supposed to be 500 then the pattern is times 5.
4*5=20
20*5=100
100*5=500

6 0

3 years ago

The length of a certain rectangle is 15cm more than three times its width. If the perimeter of the rectangle is 94cm, what is th

leva [86]

Answer:

Step-by-step explanation:

Let w be the width

Length = 3w +15

Perimeter = 94 cm

2*(length + width) = 94

2*(3w+15 + w) = 94

2*( 4w + 15) = 94

4w + 15 = 94/2

4w +15 = 47

4w = 47 -15

4w = 32

w = 32/4

w = 8 cm

Length = 3w +15 = 3*8 + 15 = 24 +15 = 39

Length = 39cm

Area = length * width = 39*8 = 312

Area = 312 cm²

8 0

4 years ago

Simplify (9y²-x² )÷ (xy+3y²)

alexdok [17]

Step-by-step explanation:

$\cfrac{(9y²-x² )}{ (xy+3y²)}$
$\cfrac{3 {}^{2} (y) {}^{2} - x}{3(y {})^{2} + xy }$
$3 {}^{2 - 1} y {}^{2 - 2 - 1} - x {}^{2 - 1}$
$3 y { }^{ - 1} - x$

$\cfrac{3}{y} - x$

Therefore,the answer is $\cfrac{3}{y} - x$ .

[Some of the steps I didn't show,try by yourself,to find!]

6 0

2 years ago