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2 years ago

(5k-3) (9+k) What is the value of K ?

Mathematics

2 answers:

slavikrds [6]2 years ago

7 0

K= 3/5 or -9 set each factor equal to zero and solve for x

UNO [17]2 years ago

3 0

Set the factors equal to 0.

(5k - 3)(9 + k) = 0

The zero product property states that if two terms being multiplied have a product of zero, then at least one of them must be zero. In our case, this means we can set both (5k - 3) and (9 + k) equal to 0:

5k - 3 = 0
5k = 3
k = 3/5

9 + k = 0
k = -9

The value of k is 3/5 and -9.

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Solve the problem x/27=4/9 x=

Monica [59]

Answer: x=12

Step-by-step explanation:

Multiply both sides by 27.
Use this rule: a/b*c=ac/b
Simplify 4×27 to 108.
Simplify 108/9 to 12

$x=\frac{4}{9} *27\\\\x=\frac{4*27}{9} \\\\x=\frac{108}{9} \\\\x=12$

Hope this helps, HAVE A BLESSED AND WONDERFUL DAY! As well as a great Superbowl Weekend! :-)

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7 0

3 years ago

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konstantin123 [22]

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5 0

2 years ago

Read 2 more answers

PLEASE HELP PLEASE PLEASE

NNADVOKAT [17]

Answer: The value of x =2 units.

Explanation:

Since we have given that

AD= CD

BE= EA

So, we get that D and E are the mid-points of AC and AB respectively.

So, by Mid- point theorem , which states that the line joining the two midpoints is parallel to third side and it is half in length of third side i.e.

$DE=\frac{1}{2}BC$

So, we put the value of DE and BC ,

$5x-3=\frac{1}{2}\times (x+12)\\\\2(5x-3)=x+12\\\\10x-6=x+12\\\\10x-x=12+6\\\\9x=18\\\\x=\frac{18}{9}=2$

Hence, the value of x =2 units.

4 0

3 years ago

Suzie bought a sweater at the sale price of $25. the original cost of the sweater was $40. what percent represents the discount

Zolol [24]

40-25=$15.00
15.00÷40.00=.375
.375×100=37.5%

3 0

3 years ago

A square has an area of 576 square inches. How long is each side in feet?

Maru [420]

The area of this square is said to be 576 square inches.
The formula for the area of a square is the length of one side squared.
Let's use l to represent the side length.
This means l^2 = 576.
To find l, find the square root of both sides.
<span>√576 = 24
</span>
The length of each side of the square is 24 inches.
But the question is asking for it in feet.
12 inches = 1 foot so 24 inches = 2 feet
This means each side of the square is 2 feet long.

Answer:
2 feet

5 0

2 years ago