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3 years ago

Solve Please help me

Mathematics

1 answer:

Lady bird [3.3K]3 years ago

6 0

Answer:

answer is -1/6 like if right

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O<br> Decrease 40 by ratio of 4:5

Reika [66]

A decrease in the ratio 4:5 implies that :

New quantity:Old quantity = 4:5

Let the new quantity be $\bf \: x$

$\bf∴ x : 40 = 4:5$

$= > \bf \frac{x}{40} = \frac{4}{5}$

$\bf = > 40 \times \frac{x}{40} = 40 \times \frac{4}{5}$

$\bf = > x = 8 \times 4$

$\bf = > x = 32$

So, the new quantity is 32

4 0

3 years ago

PLZZZZZ HELP ME! I NEED IT NOW!!!!

Alexeev081 [22]

Answer:

The expression seems to be bugged.

Step-by-step explanation:

Based on how it says null, there is probably something wrong with the program you are using. You should contact your supervisor or teacher or whatever, it might have bugged.

8 0

3 years ago

the ages of hari and harry are in the ratio 5:7 four years from now the ratio of their ages will be 3:4. find their present ages

Rainbow [258]

Answer:

x = 20

y = 28

Step-by-step explanation:

hari's age: x

harry's age: y

7x = 5y

4(x+4) = 3(y+4)

4x+16 = 3y+12

4x+4 = 3y

5/3(4x+4) = 5y = 7x

20/3x +20/3 = 7x

20/3 = 1/3x

x = 20

y = 28

4 0

3 years ago

Read 2 more answers

Which expression would be equivalent to: Which expression would be equivalent to: \frac{1+b}{2} - 3(a-1)

IrinaVladis [17]

Answer:

$\frac{1+b}{2} - 3(a-1) = \frac{b- 6a+7}{2}$

Step-by-step explanation:

Given

$\frac{1+b}{2} - 3(a-1)$

Required

An equivalent expression

$\frac{1+b}{2} - 3(a-1)$

Take LCM

$\frac{1+b}{2} - 3(a-1) = \frac{1+b- 2*3(a-1)}{2}$

$\frac{1+b}{2} - 3(a-1) = \frac{1+b- 6(a-1)}{2}$

Open bracket

$\frac{1+b}{2} - 3(a-1) = \frac{1+b- 6a+6}{2}$

Collect like terms

$\frac{1+b}{2} - 3(a-1) = \frac{b- 6a+6+1}{2}$

$\frac{1+b}{2} - 3(a-1) = \frac{b- 6a+7}{2}$

Hence, an equivalent expression is:

$\frac{b- 6a+7}{2}$

8 0

3 years ago

HELP ME WITH THIS ASAP

ser-zykov [4K]

Answer:

1. 6 faces 11 verticles and 8 edges 2. 5 faces 12 verticles and 6 edges

Step-by-step explanation:

8 0

3 years ago