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3 years ago

15

-20a -8 + 12b is ? what is the answer?

1 answer:

Ilia_Sergeevich [38]3 years ago

7 0

Answer:

4(-5a + 3b - 2)

Step-by-step explanation:

Aside from changing the order of the terms so that the "a" term comes first and the "b" term second, there's nothing you can do with this expression -20a -8 + 12b. But notice that 4 is a factor common to all three terms, and therefore it can be factored out:

Rearranging the terms, we get

-20a + 12b - 8 = 4(-5a + 3b - 2)

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H. Four businessman invested a sum of Rs.

balandron [24]

Answer:

The answers are in solutions.

Step-by-step explanation:

Four businessmen invested a sum of Rs. 250,000 in the ratio of 3:5:7:10 to start a new business.

(i) The amount invested by each businessman is;

<u>1^st businessman invested:</u>

<u />

$\frac{3}{25} * 250,000 =$ Rs. 30,000

<u>2^nd businessman invested:</u>

<u />

<u /> $\frac{5}{25} * 250,000$ = Rs. 50,000

<u>3^rd businessman invested:</u>

<u />

<u /> $\frac{7}{25} *250,000$ = Rs. 70,000

<u>4^th businessman invested:</u>

<u />

$\frac{10}{25} *250,000$ = Rs. 100,000

If they gained Rs. 50,000

(ii) The profit each one of them got is;

<u>1^st businessman got:</u>

<u />

<u /> $\frac{3}{25} * 50,000$ = Rs. 6,000

<u>2^nd businessman got:</u>

<u />

<u /> $\frac{5}{25} *50,000$ = Rs. 10,000

<u>3^rd businessman got:</u>

<u />

<u /> $\frac{7}{25} *50,000$ = Rs. 14,000

<u>4^th businessman got:</u>

$\frac{10}{25} *50,000$ = Rs. 20,000

8 0

3 years ago

When 43,55 and 67 are divided by a certain number, the remainder is 7 in each case. Find the number?

siniylev [52]

Answer:

12

Step-by-step explanation:

First subtract 7 from 43, 55 and 67

43 - 7 = 36 ; 55 - 7 = 48 ; 67 - 7 = 60

Now find the GCF of 36 , 48 , 60

36 = 2 * 2 * 3 * 3

48 = 2 * 2 * *2*2 * 3

60 = 2 * 2 * 3 * 5

GCF = 2 * 2 * 3 = 12

The required number is 12

When you divide 43 by 12, the remainder is 7.

When you divide 55 by 12, the remainder is 7

When you divide 67 by 12, the remainder is 7

5 0

2 years ago

Given that the mean of a data set is 25, and the standard deviation is 5, what is the Z-score of 15?

Ber [7]

The answer is negative 2

5 0

3 years ago

A square has an area of 121 in^2 what is the length of the sides

Gelneren [198K]

Answer:

11in

Step-by-step explanation:

$\sqrt[]{121} =11$ Then you add the units.

6 0

3 years ago

I need some help with these problems

Vika [28.1K]

Answer:

calculate by yourself

Step-by-step explanation:

use sin theorem

1.

$\frac{s}{ \sin(60) } = \frac{12}{ \sin(30) }$

2.

$\frac{s}{ \sin(90) } = \frac{4}{ \sin(30) }$

3.

$\frac{s}{ \sin(60) } = \frac{10}{ \sin(90) }$

3 0

3 years ago