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4 years ago

Explain how you would round 33 and 89 to estimate their sum

1 answer:

5 0

If I'm understanding the question correctly, this is how I would estimate the sum.

I would round each number to the nearest tens place.

33 would be rounded down to 30.

89 would be rounded up to 90.

Then I would do 90+30.

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Scott has $82.50 in his checking account after he wrote checks to pay bills for $37.96, $52.00, $12.26, and $96.36. How much was

Talja [164]

Answer:

If im correct its $281.08

Step-by-step explanation:

So i added all the numbers

$37.95+$52.00 (etc.)

Then i added the first number to the total

$82.50+$198.58 ( those are all the numbers i added at the beginning.)

Then it should equal $281.08

He had $281.08 before he paid his bills.

8 0

4 years ago

Cory earns $20 for every lawn he mows and $9 for every hedge he trims. He uses the expression 20x + 9y to keep track of his earn

Nina [5.8K]

Part A: The coefficients are 20 and 9 and variables in the expression are x and y.
Part B: The number of terms are two in the expression, they are 20x and 9y,as they are separated by an addition sign.
Part C: 9y term in the expression shows the total earned from trimming hedges.

7 0

4 years ago

How would you use the Fundamental Theorem of Calculus to determine the value(s) of b if the area under the graph g(x)=4x between

-BARSIC- [3]

The Fundamental Theorem of Calculus regarding geometry states that
$\int\limits^b_a g{(x)} \, dx = F(b)-F(a)$

Where F is the indefinite integral of $g(x)$

The first step is to integrate $g(x)$
$\int\ {4x} \, dx = \frac{4x^{1+1} }{1+1} = \frac{4x^{2} }{2} =2 x^{2}$

Then substitute the value of $b$ and $a=1$ into $2x^{2}$

$[2 (b)^{2}]-[2 (1)^{2}] = 240$
$2b^{2} -2=240$
$2b^{2}=240+2$
$2b^{2}=242$
$b^{2}= \frac{242}{2}$
$b^{2}=121$
$b=11$

Hence the limit of the area under $g(x)$ is between $a=1$ and $b=11$

6 0

3 years ago

If the interior angle of a polygon is 170 how many sides does it have

Tpy6a [65]

if interior angle is 170, subtract 170 from 180 to find exterior angle:

180-170 = 10 = exterior angle

the sum of exterior angles is 360 so divide by exterior angle to find sides:

360 /10 = 36 sides

6 0

4 years ago

This graph compares shoe sizes for a group of 80 two-year-old boys and a group of 60 three-year-old boys. Two box and whisker pl

Ivanshal [37]

To determine about how many more boys have a shoes size of 6 or less, you need to understand that a box and whisker plot takes a data set and show it in quarters (25% of the data is represented in each section).

For the 2 years olds, if the box in the middle, that means that half of the boys have a shoe size at 6 or under. There were 80 boys chosen for this study, so half of that is 40.

For the 3 year olds, the closest point to 6 is 6.5, and it is located after the line on the left. This means that only 25% of the boys have shoe sizes of 6.5 or under. 25% of the 60 three-year olds they collected data on is 15.

The difference is 40-15= 25.
There are about 25 more two-year olds wearing a size 6 or under.

4 0

3 years ago

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