3 years ago

A rate is a ratio comparing quantities measured in ___ units?

Mathematics

1 answer:

ozzi3 years ago

8 0

I think it’s different units

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5. How many 6-digit numbers can be formed from the digits 0,1,3,5,7 and 9 which are divisible by 10 and no digit is repeated?

nikdorinn [45]

There are 120 6-digit numbers that can be formed

<h3>How to determine the combination of digits?</h3>

The digits are given as:

0,1,3,5,7 and 9

Since the number must be divisible by 10.

Then the number must end in 0

The other 5 digits can take any of the 0,1,3,5,7.

So, the number of combination is:

Count = 5! * 1

Expand

Count = 5 * 4 * 3 *2 * 1 * 1

Evaluate

Count = 120

Hence, there are 120 6-digit numbers that can be formed

Read more about combination at:

brainly.com/question/11732255

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2 years ago

-14x > -3 can someone help please

I am Lyosha [343]

Answer:

Step-by-step explanation:

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3 years ago

What are the solutions of the quadratic equation (x + 3)(x +3) = 49? Ax = -2 and x = -16 Bx = 2 and x = -10 Cx = 4 and x = -10 D

Ivahew [28]

Answer:

4 and -10

Step-by-step explanation:

$\displaystyle (x + 3)(x +3) = 49 \\ x^2+3x+3x+9=49 \\ x^2 +6x+9=49 \\ x^2 + 6x + 9 - 49 = 0 \\x^2+6x-40=0 \\\\ \Delta=b^2-4ac \\ \Delta=6^2-4 \cdot 1 \cdot (-40) \\ \Delta=36+160 \\ \Delta=196 \\ \\ X_{1,2}=\frac{-b \pm \sqrt{\Delta} }{2a} \\ \\ X_1=\frac{-b+\sqrt{\Delta} }{2a} = \frac{-6+14}{2} = \frac{8}{2}=4 \\ \\ X_2=\frac{-b-\sqrt{\Delta} }{2a} = \frac{-6-14}{2}=\frac{-20}{2} = -10$