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3 years ago

Factor (Reverse Distribute): 5x−5y

Mathematics

1 answer:

jenyasd209 [6]3 years ago

4 0

Answer:

Step-by-step explanation:

The Answer should be 5(x - y)

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What must be true about the discriminant of this quadratic equation for the mentioned values of k? Assume p>0.

Goryan [66]

1/(4p)(x-h)^2+k=0

1/(4p)(x-h)^2 = -k

k(4p)(x-h)^2+1=0

4kp (x^2 - 2xh + h^2) + 1 = 0

4kp x^2 - 8kph x + 4kph^2+1 = 0

D = (-8kph)^2 - 4(4kp)(4kph^2+1) = 64(kph)^2 - 64(kph)^2 - 16kp
D = -16kp < 0

SO discriminant is always less than 0

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4 years ago

The scale on a map is 5.1 cm: 2 mi. Find the distance in miles between two cities that are

NemiM [27]

Answer:

They are 4.7miles apart

Explanation:

Cross-multiply & Divide,

$\frac{5.1cm}{2mi} *\frac{12cm}{x}$

Solve for x,

2 × 12 = 24

24 ÷ 5.1 = 4.7

8 0

3 years ago

Sue buys 5 pieces of fabric.Each piece is 1 7/10 yards long.What is the total length of the fabric she buys?One yard of the fabr

Bumek [7]

Answer:

1. 8.5 yards.

2. $42.5

Step-by-step explanation:

We have been given that Sue buys 5 pieces of fabric. Each piece is $1\frac{7}{10}$ yards long.

1. To find the total length of fabric bought by Sue we will multiply length of each fabric piece by 5.

$\text{Total length of the fabric}=5\times 1\frac{7}{10}\text{ yards}$

$\text{Total length of the fabric}=5\times \frac{17}{10}\text{ yards}$

$\text{Total length of the fabric}=\frac{17}{2}\text{ yards}$

$\text{Total length of the fabric}=8.5\text{ yards}$

Therefore, Sue bought 8.5 yards of fabric.

2. 1 yard of fabric costs $5.

So 8.5 yards of fabric will cost : 5*8.5

$\text{Total cost of the fabric}=5\times 8.5$

$\text{Total cost of the fabric}=42.5$

Therefore, the cost of total fabric bought by Sue is $42.5.

8 0

3 years ago

The mean clotting time of blood is 7.45 seconds with a standard deviation of 3.6 seconds. what is the probability that an indiv

Usimov [2.4K]

Less than 3 is about 10.75% and greater than 13 is about 6.18%.

To find these percents, you need to find the z-score for each value. Then, use your table to find the correct percent. Be sure to find the side above 13 when you use your chart.

For less than 3:
(3 - 7.45) / 3.6 = -1.24 = The percent below this is 0.1075

For greater than 13:
(13 - 7.45) / 3.6 = 1.54 = The percent above this is 0.0618

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3 years ago

What compound inequality describes the graph shown below?

NARA [144]

Answer is less than or equal to -7 or -5greater than or equal to

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3 years ago