All categories

3 years ago

Please help don't understand at all

Mathematics

2 answers:

Levart [38]3 years ago

5 0

(i) Note that it is given to you that 3a + 2b = 9

You are trying to find the value of 9a + 6b. Find what is multiplied to both the variable a & b. Divide:

(9a + 6b)/(3a + 2b) = 3

Next, multiply 3 to the 9 on the other side of the equation:

3 x 9 = 27

27 is the value of 9a + 6b.

(ii) Note that it is given to you that 8x + 6y = 60

You are trying to find the value of 4x + 3y. Find what is multiplied to both the variable x & y. Divide:

(8x + 6y)/(4x + 3y) = 2

Next, divide 2 from the 60 on the other side of the equation:

60/2 = 30

30 is the value of 4x + 3y.

stich3 [128]3 years ago

5 0

Answer:

(i) 27, (ii) 30

Step-by-step explanation:

i. since 9a + 6b is 3 times 3a + 2b then the and is 3 times 9 = 27

ii. since 4x + 3y is half of 8x + 6y then 60 /2 = 30

You might be interested in

Simplify: (–2x+y)(-58 y) O 10x10, 10xv2 10xy 10x10 ,

alekssr [168]

Answer:

Choice C

Step-by-step explanation:

$(-2x^2y)(-5x^5y^3)=\\\\(-2)(-5)\times (x^2)(x^5)\times (y)(y^3)=\\\\10x^7y^4$

Hope this helps!

8 0

3 years ago

Is 8 the HCF of 32, 48 and 72?

Sergio [31]

Step $1$

Find the factors of each number

we know that

$32=2^{5} \\48=2^{4}*3\\72=2^{3}*3^{2}$

Step $2$

Find the greatest common factor (GCF)

the GCF is equal to----------> $2^{3}=8$

therefore

the answer is

The GCF is $8$

3 0

2 years ago

Read 2 more answers

Rewrite the product as a power: <img src="https://tex.z-dn.net/?f=%28-a%29%5E%7B3%7D%20b%5E%7B3%7D" id="TexFormula1" title="

anastassius [24]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

${ - a}^{3} . {b}^{3} = ( { - a \times b})^{3} = ( { - ab})^{3} \\$

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

4 0

2 years ago

The vertices of a triangle are A(7,5) B(4,2) and C(9,2) what is mABC

shutvik [7]

Answer:

A(7,5)

Step-by-step explanation:

This is correct because the area of a triangle is b × h = a.

6 0

2 years ago

Read 2 more answers

Preston and Joel are both solving the equation 2x=14. Preston is not sure what to do because he does not know a power of 2 that

Murrr4er [49]

Answer:

yes

Step-by-step explanation:

You can always separate an equation into two parts and see where those graphs intersect.

Joel's method works well.

_____

Additional comments

Preston should know that the invention of logarithms makes it easy to solve equations like this. x = log₂(14) = log(14)/log(2) ≈ 3.8073549.

As for Joel's method, I prefer to subtract the right side to get the equation ...

2^x -14 = 0

Then graphing y = 2^x -14, I look for the x-intercept. Most graphing calculators make it easy to find x- and y-intercepts. Not all make it easy to find points of intersection between different curves.

7 0

2 years ago

Please help don't understand at all​

Please help don't understand at all