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3 years ago

9

Which number below is a factor of 15 but not a multiple of 3?

1 answer:

jenyasd209 [6]3 years ago

8 0

The answer is 5 because it’s not 3

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If x-y=1 and xy= 56 then find the value of x+y

tester [92]

Answer:

x + y = ±15

Step-by-step explanation:

Step 1: Write out systems of equations

x - y = 1

xy = 56

Step 2: Rearrange 1st equation

x = y + 1

Step 3: Substitution

(y + 1)y = 56

Step 4: Distribute

y² + y = 56

Step 5: Solve for <em>y</em>

y² + y - 56 = 0

(y - 7)(y + 8) = 0

y = -8, 7

Step 6: Plug in <em>y </em>to find <em>x</em>

x - 7 = 1

x = 8

x - (-8) = 1

x + 8 = 1

x = -7

Step 7: Find answer

x + y = ?

8 + 7 = 15

-7 + -8 = -15

So both 15 and -15 could be the answer.

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3 years ago

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Can someone plzzz hekppp meeee

erastova [34]

Answer:

Use this formula for these kinda things.

Step-by-step explanation:

Remember The z is the hypathonous, it means the biggest side.

${a}^{2} + {b}^{2} = {c}^{2}$

where Z is going to be C

put this all together

${7}^{2} + {18}^{2} = {z}^{2}$

put it into calculator, means 373=

${z}^{2}$

therfore take the square root, it will be

$z = \sqrt{373}$

which it will be 19.31

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2 years ago

Write the fraction as a percent. 6/25

Eduardwww [97]

Answer:

0.0417

Step-by-step explanation:

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A ballroom in a hotel has the shape shown in the diagram. The hotel manager needs to determine how much carpet is needed to reca

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There were 576 bottles of water at the snack shop. People bought 469 bottles of water. How many bottles of water are at the snac

MissTica

Answer:

107

Step-by-step explanation:

576-469=107

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3 years ago

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