Pls help I need this pls help I’m begging u have a good day pls help

Mathematics

2 answers:

horrorfan [7]3 years ago

6 0

Answer:

Step-by-step explanation:

In order to solve this question, we need to subtract the smaller area of the hole from the bigger area of the actual donut. We use the formula $a=\pi r^2$ . We plug the numbers in for the smaller circle and the area of the smaller circle is 3.14. Then, we plug in the numbers for the bigger number and we get 28.27. We subtract 3.14 from 28.27 and we get approximately 25, which is equal to J.

Alexxx [7]3 years ago

5 0

Answer:

Step-by-step explanation:

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Simplify. 2/5 + 3/8 5/13 5/40 6/13 31/40

jeka57 [31]

Answer:

Exact Form:

87923 /216320

Decimal Form:

0.40644877

Step-by-step explanation:

5 0

3 years ago

10. Rewrite into slope-intercept form 7x + y = 25

ch4aika [34]

To write in slope-intercept form, you first need to get y by itself. To do this, subtract 7x from both sides of the equation.

Doing this gets you: y = 25 - 7x

Now that y is by itself, remember that slope-intercept form looks like this: y = mx + b

So, let's switch the right side.

y = -7x + 25

Slope intercept form is: y = -7x + 25

Rules for y in Slope-Intercept form:

y must be positive

y must be by itself (so, not 2y, or anything with it... just y)

8 0

3 years ago

1. if m<b = 60 what is AB<br><br><br>2. if m<b =45 what is the perimeter of the trapezoid.

nika2105 [10]

Answer:....

Step-by-step explanation:

first we need to find the base of the triangle, so the total is 20, they also give us 12, so we subtract 20-12=8 now divide. 8/2=4. Now we use the 4 and the 60. We use SOH-CAH-TOA, they give us the base now we need to find AB which is the hypotenuse. So we take out the TOA, and the 4 is the adjacent so we take out the SOH, we have CAH now, so we use cos. Now equation time....

$cos60=\frac{4}{x}$ since x is the bottom we switch $\frac{4}{cos60}$ , which equals 8. AB=8.

Now to find the perimeter. We still use the 4 to find the hypotenuse so we can find the outside side. For this one they tell us to use 45, so now lets see what method we use. SOH-CAH-TOA. We need the hypotenuse and they give us the adjacent, so we use cos again. Now setting up the equation...

$cos45=\frac{4}{x}$ x is at the bottom again to we switch.