All categories

3 years ago

Hi guys, can anyone help me with this? Many thanks:)

Mathematics

1 answer:

natka813 [3]3 years ago

3 0

Step-by-step explanation:

You might be interested in

Solve each system by elimination.

mixas84 [53]

For eliminating you need to have a variable that cancels the other out and in this case 2x and -2x do. Then you want to take -3y+9y and add the numbers after the equal sign. -9+3

3 0

3 years ago

Select the correct answer,

Slav-nsk [51]

Give me 8 mins i will answer in the comments

6 0

2 years ago

if one bucket + 5 jars equal one tub and three buckets plus two jars equal to tubs how many jars are there equal to one tub

d1i1m1o1n [39]

Answer:

Simplify 4y + 7x = 2t and there you go that's your answer☺

Step-by-step explanation:

Bucket = y

Jars = x

Tubs = t

y + 5x = t

3y + 2x = t

5 0

3 years ago

Read 2 more answers

May i please get help for this please and thank you

Elanso [62]

Answer:

There's nothing here

8 0

3 years ago

11. Find the solutions of x^2-x-30 = 0.

asambeis [7]

To find the solutions of quadratic equation, there are two ways to do which are:

Factorize
Quadratic Formula

Step 1

- Factor the expression.

To factor the expression, refer below:

$\displaystyle \large{ (x - a)(x - b) = {x}^{2} - bx - ax + ab}$

For bx and ax, both can be common-factored. Therefore

$\displaystyle \large{ (x - a)(x - b) = {x}^{2} - (b + a)x + ab}$

From the above, we conclude that:

The middle term is b+a
The last term is a×b
Thus, we have to find two numbers that satisfy a+b and a×b

From the expression, 30 comes from 5×6 and when 5-6 = -1. Therefore, a can be 5 and b can be 6.

$\displaystyle \large{{x}^{2} - x - 30 = (x + 5)(x - 6)}$

Because in the middle term, it is -x which is negative, we have to let the highest number become negative.

From the factored expression:

The middle term = 5x + (-6x) = -x
The last term = 5 × (-6) = -30

Then we replace the standard equation with factored form.

$\displaystyle \large{ (x + 5)(x - 6) = 0}$

For this part, we solve like a linear equation where we isolate x. Just think you are solving two linear equations!

Hence

$\displaystyle \large{ x = - 5, 6}$

Therefore, the solutions are x = -5, 6.

7 0

3 years ago