Substitute the value for the variable, and state in a complete sentence whether the resulting number sentence is true or false. If true, find a value that would result in a false number sentence. If false, find a value that would result in a true number sentence. 1. 15a ≥ 75. Substitute 5 for a.

Answers

Answer 1
Answer:

Answer:

Step-by-step explanation:

15a\geq 75\n15(5)\geq75\n75\geq75\nTrue

If we substituted 1 for a then:

15a\geq75\n15(1)\geq75\n15\geq75\nFalse


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A store advertises 15% off an item that regularly sells $300.what is the sale price off the item?

A box of uncooked spaghetti costs $0.1369 per ounce. How much is this cost to the nearest cent?

Answers

$0.14, because the number to the right of the 3, which is 6, will round up because it's greater than 5

The angle a wheelchair Ramp makes with the ground can be no more than 10°.What is the degree measure of the supplement of 10°?

Answers

170 because supplementary angles are two angles that when added together, euql 180, so 180-10=170

if 60 seconds are in a minute 60 minutes are in an hour and 24 hours in a day then 86400 seconds are in a day what type of reasoning is this

Answers

Answer:

This is a deductive reasoning.

Step-by-step explanation:

Every statement like 60 seconds are in a minute, and 60 minutes are in a hour, and 24 hours are in a day is a premise. The conclusion is that there are 86,400 seconds in a day, which comes from: 24 hours / day * 60 minutes / hour * 60 second / minute = 86,400 second / day.

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What is 9.375 Rounded to the nearest hundredth

Answers

Note the hundredth place value (underlined and bolded):

9.375

Look at the number to the right of the hundredth place value. It is a 5. Because you round up if the number is 5 or greater, you round up in this case (you round down if it is 4 or less).

9.375 rounded to the nearest hundredth is 9.38

~

9.375 Rounded to the nearest hundred is

9.38 that's your answer Hope this helps :)


What is 18/30 reduced to

Answers


18/30, is reduced to 9/15 then 3/5.

9/15 first, because  18 and 30 are both divisible by 2.

 18÷2=9 and 30÷2=15.

Then how  I got 3/5, was because both 9 and 15 are divisible by 3.

 9÷3=3 and 15÷3=5 so the final answer that you are looking for, is 3/5.

Answer: 3/5

Step-by-step explanation: In order to write the fraction 18/30 in lowest terms, we divide the numerator and the denominator by the greatest common factor of 18 and 30 which is 6.18 divided by 6 is 3 and 30 divided by 6 is 5 so 18/30 written in lowest terms is 3/5.

Help??A tree struck by lightning broke at a point 12 feet above the ground.
What was the height of the tree to the nearest tenth of a foot?
Explain your reasoning.

Answers

Answer:

height of the tree was 52.8 feet

Step-by-step explanation:

Height of the tree will be determined by adding broken part of the tree, lying on the ground (as the hypotenuse of the triangle) and the remaining part of the stem.

Now we apply Pythagoras theorem in the right angle triangle with the sides as 12 feet and 39 feet

⇒ Hypotenuse² = Base² + Height²

⇒ Hypotenuse² = 12² + 39²

⇒ Hypotenuse² = 144 + 1521 = 1665

⇒ Hypotenuse = √1665

                         = 40.80 feet

Now height of the tree = 12 + 40.8

= 52.8 feet

Therefore, height of the tree was 52.8 feet

The tree is 52.8 feet, since the hypotenuse is only part of the tree, you have to add 12, since then it would equal the total height of the tree.

a^2+b^2=c^2
12^2+ 39^2=c^2
144+1521= 1665
√1665
= 40.8

40.8 + 12
= 52.8 feet