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3 years ago

Put your answer in standard notation to 4 decimal places.)

Mathematics

1 answer:

ArbitrLikvidat [17]3 years ago

8 0

3.8275×10−1 :))) there ya go

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When asked to compare -9 and positive 2 Joshua wrote -9 >2 Joshua correct? If not explain and correct his error

morpeh [17]

Answer:

-9 < 2

Step-by-step explanation:

-9 is a negative number

2 is positive number

and of course -9 is smaller or < than 2

This means he is wrong becuase this symbol > means greater

He should correct it to -9 < (less) than 9

Hope this help you :3

8 0

3 years ago

Carolyn is building a pen for a dog. The PERIMETER of the pen is 52 ft. The material is sold by the yard. It is 10.99 dollars pe

Mazyrski [523]

We know that the fence is 52 feet long, but since it's sold in yards, we need to somehow convert feet to yards.
First, we need to find a little something called a conversion factor. Basically, we need to see what we can do to get from one foot to one yard.
Well, how many feet are there in a yard? 3. So now we know that one foot is 1/3 of a yard.

So to convert 52ft to yards, we need to divide by 3. What's 52 divided by 3?
17.33.
Now we just need to multiply that by 10.99 so that we can find out the cost.
We get 190.45. That's your answer!

It all cost $190.45

Don't forget to rate this answer the Brainliest!

8 0

3 years ago

Which quadratic equation is equivalent to (x+2)2+5(x+2)-6=0

professor190 [17]

$(x+2)^2+5(x+2)-6=0\\\\x^2+2\cdot x\cdot2+2^2+5\cdot x+5\cdot2-6=0\\\\x^2+4x+4+5x+4-6=0\\\\x^2+9x+2=0$

6 0

3 years ago

You go for a half day hike. In 4 hours, you hike 10 miles. Which is a unit rate that describes your journey? A- 5 miles per hour

erica [24]

Answer: B is reasonable

Step-by-step explanation: In 4 hours, you hike 10 miles. Divide 10 miles by 4 hours to get miles per hour, which is what you want to solve for in this problem. 10 divided by 4 is 2.5, which means you can hike 1 mile in 2.5 hours.

5 0

3 years ago

How can I solve this question???

eduard

Answer:

144°

Step-by-step explanation:

step 1

Find the measure of the central angle of the regular pentagon

Divide 360 degrees by 5 (the number of sides)

$360\°/5=72\°$

Let

c----> the center of the pentagon

we know that

m∠ECA=72°

m∠ACB=72°

therefore

m∠ECB=m∠ECA+m∠ACB

substitute the values

m∠ECB=72°+72°=144°

The measure of angle ECB is equal to the degrees that the pentagon rotate

5 0

3 years ago