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4 years ago

(k+1)(k-5)=0 find for 0

Mathematics

1 answer:

Tems11 [23]4 years ago

6 0

K=-1 or k=5

either quantity could equal zero, so put each quantity equal to zero and solve for k.

hope this helps :)

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You want to paint the walls of your bedroom. Two walls measure 15 ft by 9 ft, and the other two walls measure 18 ft by 9 ft. The

sertanlavr [38]

Answer:

The total amount you will spend on the paint=$34

Step-by-step explanation:

Step 1: Determine total area of walls

The total area of walls=Area of wall 1+area of wall 2+area of wall 3+area of wall 4

where;

area of wall 1=(15×9)=135 ft²

area of wall 2=(15×9)=135 ft²

area of wall 3=(18×9)=162 ft²

area of wall 4=(18×9)=162 ft²

replacing;

Total area of walls=(135×2)+(162×2)=594 ft²

Total area of walls=594 ft²

Step 2: Number of gallons of paint needed

Use the expression;

Total area of walls=area per gallon cans×number of gallon cans needed

where;

total area of walls=594 ft²

area per gallon=400 ft²

number of gallons=n

replacing;

594=400×n

n=594/400

n=1.485

Total number of gallon cans=1.485=2 gallon cans

Step 3: Total cost

The total cost of painting can be expressed as;

Total cost=cost per gallon can×number of gallon cans needed

where;

Cost per gallon=$17

number of gallon cans needed=2

replacing;

Total cost=(17×2)=$34

The total amount you will spend on the paint=$34

8 0

3 years ago

The area of two similar octagons are 4 m2 and 25 m2. What is the scale factor of their side lengths

mylen [45]

Answer:

The scale factor of the sides of the Octagon is 2:5

Step-by-step explanation:

Both these octagons can be considered as the combination of 8 similar triangles joined edge to edge.

We know this property of similar triangles, that the ratio of area of similar triangles is proportion to the square of the ratio of sides of the similar triangle.

$Side_{1} ^{2} : Side_{2} ^{2} =Area_{1} : Area _{2}$

From the above property, we plug in the values

$Side_{1} ^{2} : Side_{2} ^{2} =4: 25$

$Side_{1} : Side_{2} =2: 5$

Therefore, the ratio of the sides of the Octagon are 2:5.

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3 years ago

Which linear inequality is represented by the graph?

larisa [96]

Answer:

y>3x-4

Step-by-step explanation:

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3 years ago

Branden has 14 baseball cards. He finds 5 more baseball cards write an expression to match the words

BaLLatris [955]

T= 14c+5c t is the total amount of cards and c stands for the cards

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3 years ago

Find the slope from the graph 5 -5 undefined 0

yanalaym [24]

Answer:

Step-by-step explanation:

5-5=0

I hope this is correct and have a great day

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3 years ago