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kolbaska11 [484]
3 years ago
13

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

Mathematics
2 answers:
slavikrds [6]3 years ago
7 0
K= 3/5 or -9 set each factor equal to zero and solve for x
UNO [17]3 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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Find two numbers whose sum is 50 and whos difference is 22
pentagon [3]

Answer:

36 and 14

Step-by-step explanation:

Create an equation

x+x-22=50

Combine like terms

2x-22=50

Add 22 on both sides

2x=72

divide 72 by 2

x=36

subtract 22 from 36

14+36=50

Hope this helps! :P

5 0
4 years ago
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15. Which statements are true about
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Answer:

EG \perp FH

m\angle EFH = 45^\circ

Step-by-step explanation:

Given

See attachment for square EFGH

Required

Select the true statements

The sides of the square are EF, FG, GH and HE while the diagonals are: EG and FH

The diagonals of a square meet at 90^\circ . This implies that: EG and FH are perpendicular i.e. EG \perp FH

Also, the diagonals divide the angles at the edges (90^\circ) into two equal angles (45^\circ)

This means that:

m\angle EFH = 45^\circ

The other two options are false.

i.e.

EP \ne EH

FP \ne 2(EG)

5 0
3 years ago
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Graph the parametric equations. <br><br> x = 7 sin (t) + sin (7t)<br> y = 7 cos (t) + cos (7t)
UkoKoshka [18]

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Step-by-step explanation:

6 0
4 years ago
A new school will have three playgrounds. Two playgrounds will be large and one playground will be small. The district administr
Andrews [41]

Answer:

you multiple two numbers and you devide both sides you get the answer

7 0
3 years ago
Can someone please help me?
adoni [48]

Answer:

2. x = 3

3. x = 10 and y =2

Step-by-step explanation:

2.

From inspection, we can see that EF = 10 and KL = 5

Therefore the ratio KL : EF = 5 : 10 = 5/10 = 1/2

This means that the side measures of ΔJKL are 1/2 the corresponding side measures of ΔGEF

Therefore, if GF = 22, then JL = 22 ÷ 2 = 11

So:  2x + 5 = 11

⇒  2x = 11 - 5 = 6

⇒ x = 6 ÷ 2 = 3

x = 3

3.

From inspection, we can see that DF = 12 and HJ = 9

Therefore the ratio DF : HJ = 12 : 9 = 12/9 = 4/3

This means that the side measures of ΔDEF are 4/3 times the corresponding side measures of ΔHGJ

Therefore, if HG = 6, then DE = 6 x 4/3 = 8

So:  2y + 4 = 8

⇒  2y = 8 - 4 = 4

⇒ y = 4 ÷ 2 = 2

y = 2

Similarly, if GJ = 24, then EF = 24 x 4/3 = 32

So:  4x - 8 = 32

⇒  4x = 32 + 8 = 40

⇒ x = 40 ÷ 4 = 10

x = 10

7 0
2 years ago
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