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3 years ago

6th grade math help me please !

Mathematics

1 answer:

antiseptic1488 [7]3 years ago

6 0

First we have to figure out how much 3 bags cost using the total cost of $8.25

That means. we would do 8.25/3 and 8.25 divide by 3 equals 2.75.

Now we know that each bag costs approximately $2.75

All we have to do now is multiply 2.75 by 4 to get the cost for the total of 4 bags.

4 times 2.75 is exactly 11 dollars, if might change if theres tax.

But, the answer would be 4 bags costs $11.

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Simplify. Your answer should contain only positive<br> exponents.<br> -2^х

polet [3.4K]

Answer: I'm not entirely sure, but maybe 1/x^2?

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3 years ago

The curved part of this figure is a semicircle.

Nitella [24]

Draw the diameter from point (-1, -5) to point (2, 3).

The triangle has base 3 and height 8.

The diameter of the semicircle is the hypotenuse of the triangle.

$d = \sqrt{3^2 + 8^2}$

$d \approx 8.544$

The radius is half the diameter.

$r = \dfrac{d}{2} = \dfrac{8.544}{2} = 4.272$

The total area is the area of the triangle plus the area of the semicircle.

$A = \dfrac{bh}{2} + \dfrac{\pi r^2}{2}$

$A = \dfrac{3 \times 8}{2} + \dfrac{\pi \times 4.272^2}{2}$

$A = 12 + 9.125 \pi$ $units^2$

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3 years ago

What ratios are less than 8 to 10

never [62]

5 to 10 is just one of many examples. Hope this helps :)

7 0

3 years ago

Read 2 more answers

The speed of the current in a creek is 2mph. A person can kayak 10 mi upstream in the same time that it takes him to kayak 14 mi

ad-work [718]

Answer:

2 hours

Step-by-step explanation:

The relation between time, speed, and distance is ...

time = distance/speed

For a kayak speed of k miles per hour in still water, the speed upstream is (k-2) and the speed downstream is (k+2). Over the distances given, the times are the same, so we can write ...

10/(k-2) = 14/(k+2)

Multiplying by (k+2)(k-2) gives ...

10(k+2) = 14(k -2)

10k +20 = 14k -28 . . . . . eliminate parentheses

48 = 4k . . . . . . . . . . . . . . add 28-10k

12 = k

Then the time for 28 miles downstream is ...

time = 28 / (12 +2) = 2 . . . . hours

It will take the person 2 hours to kayak 28 miles downstream.

5 0

3 years ago

There are 5040 ways for a group of 7 people to be seated. How many ways could a group of 8 seated explain how you figured it out

Dovator [93]

The number of ways is 40320

<h3>How many ways could a group of 8 seated?</h3>

The group of people is given as:

Group = 8

The number of ways this group can be seated is calculated as:

Ways = Group !

So, we have

Ways = 8!

Expand

Ways = 8 * 7 * 6 * 5 * 4 * 3 *2 *1

Evaluate

Ways = 40320

Hence, the number of ways is 40320