All categories

3 years ago

Factorise completely

1 answer:

4 0

1. Number that adds up to -12 and multiplied by the same # that gives u -13. Set it up like this because both are negative so, u need 1 negative and 1 positive.
(x-13)(x+1)

2. Same rule applies. GCF
8y(4y+1)

3. (x+3)(x-3)

You might be interested in

Four friends equally share the cost of their dinner that was $64 plus a 20% tip. If each person contributes $19, will that be en

Ulleksa [173]

If the dinner altogether costs £64, and there is a 20% tip, that brings the total amount paid to £76.80, and if four people are paying £19 towards the total, then there would not be enough for them to pay for both the meal and the tip, as 19x4 is 76, and the total is £76.80, meaning you need another 80 Pence.

Answer: No, as there is 80 pence off the total amount with all of there money added together which they would need to pay for the meal and the tip.

Hope this helps! Xo

4 0

4 years ago

The cheetah is 7/6 the Perigen falcon is 10/3

Brilliant_brown [7]

The answer is $2 \frac{1}{6}$ .

Explanation:

In order to subtract the fractions, we must make them like fractions. To do this, the denominators must be the same by multiplying (only). Since the first fraction is $\frac{10}{3}$ , 3 can be multiplied by 2 to get 6, which is the other fraction, we can multiply it. Whatever you do to the denominator you must do to the numerator. Now multiply 2 by the numerator (10) to get $\frac{20}{6}$ . Now we can subtract the fractions $\frac{20}{6}$ and $\frac{7}{6}$ to get 13/6. Since this fraction is not in mixed fraction form yet, we must do that first. goes into 13 twice, so the whole number is 2 and there is still 1 left, making the fraction $\frac{1}{6}$ . Therefore, the difference is 2 $\frac{1}{6}$ .

8 0

3 years ago

Simplify. Rewrite the expression in the form (7^3)^3

Sveta_85 [38]

Answer:

7^9

Step-by-step explanation:

When dealing with exponents inside and outside parenthesis with only one term in the parenthesis, you multiply the exponents. By doing this, you get 7^3x3, which is 7^9

6 0

4 years ago

Read 2 more answers

Solve the equation on the interval [0, 2π). cos x + 2 cos x sin x = 0

vekshin1

Take a common factor of cos(x)
$\cos(x) (1 + 2 \sin(x) ) = 0$
then by zero multplication rules
$\cos(x) = 0$
$x = \frac{\pi}{2} \: x = \frac{3\pi}{2}$
and when
$1 + 2 \sin(x) = 0$
so
$2 \sin(x ) = - 1$
$\sin(x) = \frac{ - 1}{2}$
so
$x = \frac{3\pi}{2} - \frac{\pi}{3}$
and
$x = \frac{3\pi}{2} + \frac{\pi}{3}$

6 0

3 years ago

What is 3x+1? They say its really easy and I don't know how.

posledela

-------------------------------------------------------------------------------------------------------------

Answer: $\textsf{x = - 1 / 3}$

-------------------------------------------------------------------------------------------------------------

Given: $\textsf{3x + 1}$

Find: $\textsf{The value of the unknown variable x}$

Solution: In order to solve for x we need to isolate it with the first step being to subtract 1 from both sides and then we would divide both sides by 3 to give us the solution.

Subtract 1 from both sides