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Svetradugi [14.3K]
3 years ago
10

A and B are friends and their ages differ by 4 years, A being the elder. A's father D, is twice as old as A, and B is twice as o

ld as his sister C. The age of D and and C differ by 38 years. Find the ages of A and B.​
Mathematics
1 answer:
Marina CMI [18]3 years ago
6 0

Answer:

Step-by-step explanation:

A = B+4

D = 2A

B = 2C

D-C =  38

2A - B/2 = 38

2(B+4) - B/2 = 38

4B+16 - B = 79

3B = 63

B = 21

A = B+4 = 25

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What is 0.4 divided by 5.12 in long division
Svetradugi [14.3K]
Start by mult. both 0.4 and 5.12 by 100.  What is 40 divided by 512?

        ___.078_______________
512 /  40.000
           3584
          -----------
             4160
             4096
           ---------
                 64              and so on.   Calculator answer is 0.078125.
3 0
3 years ago
What is negative 5 and 3/4 as a fraction
Alinara [238K]

Answer:

-23/4

Step-by-step explanation:

-5\frac{3}{5}

-\frac{5x4+3}{4}

-\frac{20+3}{4}

-\frac{23}{4}

3 0
3 years ago
If a store had 330 video games, and 47% of the games were for Xbox, and 53% were for ps4, then how many xbox and ps4 games are i
Bingel [31]

Answer:

The number of games for Xbox is about 155

The number of games for PS4 is about 175

Step-by-step explanation:

Let us find the numbers of games for Xbox and for PS4 game

∵ There are 330 video games in the store

∵ 47% of them were for Xbox

- Multiply 47% by 330

∴ The number of games for Xbox = 47% × 330

∵ 47% = \frac{47}{100}

∴ The number of games for Xbox = \frac{47}{100} × 330

∴ The number of games for Xbox = 155. 1

∴ The number of games for Xbox ≅ 155

∵ 53% of them were for PS4

- Multiply 53% by 330

∴ The number of games for PS4 = 53% × 330

∵ 53% = \frac{53}{100}

∴ The number of games for PS4 = \frac{53}{100} × 330

∴ The number of games for PS4 = 174.9

∴ The number of games for PS4 ≅ 175

4 0
3 years ago
Please help me asap<br><br>​
dimaraw [331]
Okay so basically 1 + 5 = 180
and if we know 1 = 124 we can assume 5 = 56
and 5 = 4 SOOOO
4 = 56
4 0
3 years ago
Solve for z.<br> Z&lt;-9<br> Z&gt;-9
Alex73 [517]

Answer:

z>-9

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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