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3 years ago

How do I work this out and explain how

Mathematics

1 answer:

Sav [38]3 years ago

4 0

80* 4/5

Cross out 80 and 5

You can divide by 5 for both of the numbers

80/5=16

5/5=1

16*4= 64

Answer is 64

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Two lines, A and B, are represented by the equations given below:

SashulF [63]

Given:
Line A: 2x + 2y = 8
Line B: x + y = 4

x = 4 - y
2(4-y) + 2y = 8
8 - 2y + 2y = 0
0 = -8

y = 4 - x
2x + 2(4-x) = 8
2x + 8 - 2x = 8
0 = 0

There is no solution.

4 0

3 years ago

Ahmed, Walid and Faisal made $1446 profit from selling used books. If Ahmed to receive double amount of Faisal and Walid to rece

crimeas [40]

Answer:

Faisal receives $241

Ahmed receives $482

Walid receives $723

Step-by-step explanation:

I am going to build a system of equations to solve this question.

We have that:

x is the amount that Faysal received.

y is the amount that Ahmed received.

z is the amount that Walid received.

Ahmed, Walid and Faisal made $1446 profit from selling used books.

This means that

$x + y + z = 1446$

Ahmed to receive double amount of Faisal

This means that $y = 2x$

Walid to receive triple amount of Faisal.

This means that $z = 3x$

$x + 2x + 3x = 1446$

$6x = 1446$

$x = \frac{1446}{6}$

$x = 241$

$y = 2x = 2*241 = 482$

$z = 3x = 3*241 = 723$

Faisal receives $241

Ahmed receives $482

Walid receives $723

8 0

3 years ago

146x1600=_____<br>Please help me Q-Q <br>Thank you guys, have a good day

yawa3891 [41]

Answer:

233600

Step-by-step explanation:

46x600=27600

27600

100x1000=1000000

=233600

Have a nice day

4 0

3 years ago

I don’t know how to do this bro

Nana76 [90]

Answer:

$2x^3-4x^2-x+\frac{14}{x+6}$

Step-by-step explanation:

Use synthetic division:

-6 | 2 8 -25 -6 14

2 -4 -1 0 | 14

-6 comes from x+6=0 where x=-6

We drop the first number 2 and multiply it by -6. We then combine 8 and -12 to get -4. We repeat this process until the last column. The answer will be in coefficients with a remainder if there is one.

Therefore, the correct answer is $2x^3-4x^2-x+\frac{14}{x+6}$ .

7 0

2 years ago

The sequence {an } is defined by a of o = 1 and a of n + 1 = 2 a of n + 2 for n = 0, 1, 2.... What is the value of a of 3?

maria [59]

$\begin{cases}a(0)=1\\a(n+1)=2a(n)+2&\text{for }n\ge0\end{cases}$

Use the second part of the definition (the recursive one):

$a(1)=2a(0)+2=4$
$a(2)=2a(1)+2=10$
$a(3)=2a(2)+2=22$

3 0

3 years ago