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siniylev [52]
3 years ago
10

60 percent of a number, minus 17, is -65

Mathematics
1 answer:
Reika [66]3 years ago
7 0

Answer:

We have (60/100)·x - 17 = - 65;

Then (6/10)·x = 17 - 65;

(3/5)·x = - 48;

x = (5/3)·(-48);

x = 5·(-16);

x = - 80;

Step-by-step explanation:

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Two cubes have their surface areas in the ratio 1:4 , what is the ratio of their volumes ?
yKpoI14uk [10]

Answer:

1 : 8

Step-by-step explanation:

For similar figures with ratio of sides = a : b

Then ratio of areas = a² : b² and

ratio of volumes = a³ : b³

Given ratio of areas = 1 : 4

linear ratio = \sqrt{1} : \sqrt{4} = 1 : 2

ratio of volumes = 1³ : 2³ = 1 : 8


8 0
3 years ago
Ken uses 6 apples and 2 bananas to make a fruit salad. He put twice as many oranges as bananas in the salad. How many pieces of
V125BC [204]

Answer:

<u>24 pieces</u> of fruits are use to make 2 fruit salads.

Step-by-step explanation:

Given:

Ken uses 6 apples and 2 bananas to make a fruit salad. He put twice as many oranges as bananas in the salad.

Now, to find the number of pieces of fruit Ken will use to make 2 fruit salads.

So, pieces of fruits use to make a salad are:

Apples = 6.

Bananas = 2.

Oranges = twice of bananas = 2×2=4.

So, total pieces of fruits to make a salad = 6+2+4=12.

Now, total pieces of fruits to make 2 fruit salads:

(6+2+4)\times 2

=12\times 2

=24.

Therefore, 24 pieces of fruits are use to make 2 fruit salads.

8 0
3 years ago
Solve the system by substitution: <br> 3x + 2y = 26<br> Y=x + 3
Orlov [11]

Answer:

x = 4

Step-by-step explanation:

3x + 2y = 26

y = x + 3

Plug in the equation for y

3x + 2(x + 3) = 26

Multiply the 2 with what is in the parantheses

3x + 2x + 6 = 26

Combine like terms and solve for x

5x + 6 = 26

5x = 20

x = 4

5 0
3 years ago
Read 2 more answers
Solve.
Aloiza [94]

Step-by-step explanation:

x=−y−2z+3

x=y+32z+1

x=13y+23z+13

8 0
3 years ago
A bird releases waste from a height of
shepuryov [24]

Answer:

5secs

Step-by-step explanation:

Given the equation of the height expressed ad;

h(t) = - 16t^2 + initial height

Given that initial height = 400feet

h(t) = - 16t^2 + 400

The waste will hit the ground at when h(t) = 0

substitute

0 =  - 16t^2 + 400

16t^2 = 400

t² = 400/16

t² = 25

t = √25

t = 5secs

Hence it will take the easte 5secs to hit the ground

7 0
3 years ago
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