All categories

3 years ago

A is directly proportional to B and when A = 4 , B = 8 8. Find A when B = 44 . please can I have the working out

Mathematics

1 answer:

musickatia [10]3 years ago

5 0

Answer:

A = 2

Step-by-step explanation:

If A = 4 when B = 88, we can divide both A and B by 2 to find their values.

88/2 = 44

4/2= 2

We can also check this by dividing 88 by 4 to figure out that A = 1 when B = 22

We can then multiply both the values of A and B to get a proportional relationship of A = 2, B = 44

(sorry if this is confusing but I hope it helped)

You might be interested in

Factor the following:<br><br><br><br> 2x2+9x+9

ryzh [129]

Answer: (2x+3)(x+3)

Step-by-step explanation:

Looking at this, you know that it must look something like

(? +3)(?+3) , because they must multiply to 9. The ?s must multiply to 2x^2, the most plausible values being 2x and x, ending us up with (2x+3)(x+3)

8 0

3 years ago

Read 2 more answers

Can I get help with this pls

LuckyWell [14K]

Answer:

Step-by-step explanation:

7 0

3 years ago

In a group of Year 9 students, the ratio of boys to girls is 9 : 7. There are 4 more boys than girls in this group. How many stu

KATRIN_1 [288]

Answer: 32

Step-by-step explanation:

There are 18 boys and 14 girls (4 more boys than girls. 32 students total.

7 0

3 years ago

Find the first three terms in the expansion , in ascending power of x , of (2+x)^6 and obtain the coefficient of x^2 in the expa

Nataly_w [17]

Answer:

The first 3 terms in the expansion of $(2 + x)^{6}$ , in ascending power of x are,

$64 , 192 \times x^{1} {\textrm{ and }}240 \times x^{2}$

coefficient of $x^{2}$ in the expansion of $(2+x - x^{2})^{6}$ = (240 - 192) = 48

Step-by-step explanation:

$(2+x)^{6}$

= $\sum_{k=0}^{6}(6_{C_{k}} \times x^{k} \times 2^{6 - k})$

= $6_{C_{0}} \times x^{0} \times 2^{6} + 6_{C_{1}} \times x^{1} \times 2^{5} + 6_{C_{2}} \times x^{2} \times 2^{4}$ + terms involving higher powers of x

= $64 + 192 \times x^{1} + 240 \times x^{2}$ + terms involving higher powers of x

so, the first 3 terms in the expansion of $(2 + x)^{6}$ , in ascending power of x are,

$64 , 192 \times x^{1} {\textrm{ and }}240 \times x^{2}$

Again,

$(2+x - x^{2})^{6}$

= $\sum_{k=0}^{6}(6_{C_{k}} \times (2 + x)^{k} \times (-x^{2})^{6 - k})$

Now, by inspection,

the term $x^{2}$ comes from k =5 and k = 6

for k = 5, the coefficient of $x^{2}$ is , $(-32) \times 6$ = -192

for k = 6 , the coefficient of $x^{2}$ is, $6_{C_{2}} \times 2^{4}$ = 240

so, coefficient of $x^{2}$ in the final expression = (240 - 192) = 48

3 0

3 years ago

To make 5 blueberry pies,Mindy needs about 2 pounds of blueberries. How many pounds of blueberries does Mindy need to make 20 bl

Vsevolod [243]

20 lol sorry if it’s wrong

6 0

3 years ago

Read 2 more answers

A is directly proportional to B and when A = 4 , B = 8 8. Find A when B = 44 .​ please can I have the working out

A is directly proportional to B and when A = 4 , B = 8 8. Find A when B = 44 . please can I have the working out