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gulaghasi [49]
3 years ago
10

Help will mark brainliest............

Mathematics
1 answer:
Nataliya [291]3 years ago
7 0
The answer is 90, Because angle D is a 90 degree angle, and 180- 90=90, so the answer is 90.
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Danny earned $20,000 last year This year he earned $12,000. What is the percentage difference?
Karolina [17]

Answer:

60%

the reason its 60 percent is because if u think of 20,000 as just 20 its much easier

5 0
3 years ago
Chris said that a triangle takes up 1/2 the space of a rectangle, so the formula for finding the area of a triangle should be 1/
MrRissso [65]

Answer:

Yes

Step-by-step explanation:

8 0
2 years ago
Please help, this chapter was on derivatives...
Usimov [2.4K]
<h3>Answer:  ds/dt = 11</h3>

================================================

Work Shown:

Before we can use derivatives, we need to find the value of s when (x,y) = (15,20)

s^2 = x^2+y^2

s^2 = 15^2+20^2

s^2 = 225+400

s^2 = 625

s = sqrt(625)

s = 25

-----------

Now we can apply the derivative to both sides to get the following.  Don't forget to use the chain rule.

s^2 = x^2 + y^2

d/dt[s^2] = d/dt[x^2 + y^2]

d/dt[s^2] = d/dt[x^2] + d/dt[y^2]

2s*ds/dt = 2x*dx/dt + 2y*dy/dt

2(25)*ds/dt = 2(15)*5 + 2(20)*(10)

50*ds/dt = 150 + 400

50*ds/dt = 550

ds/dt = 550/50

ds/dt = 11

-----------

Side note: The information t = 40 is never used. It's just extra info.

8 0
3 years ago
Your supposed to put the 4 answers in the correct spots. Please help!
VARVARA [1.3K]

Answer:

this 4 week ago so i really dont need to answer free point

Step-by-step explanation:

8 0
3 years ago
Complete the following statements.
Ray Of Light [21]
1.
11 16
— X — = 44
4 1

Answer to number 1. —- 44 cups.

2.
880 yards is half of 1,760. So, if 1,760 yards is 1 mile then 880 yards (1/2) is .5 mile.

Answer to number 2. —- 0.5 mile.

3.
36 7
— X — =84
1 3


Answer to number 3. —- 84 inches.



ANSWER:
1. 44 cups
2. 0.5 mile
3.84 inches

Hope this helped you understand you how to do this. Have a great day. A thank you and (or) brainliest is always appreciated. (Optional....) Goodbye!
8 0
3 years ago
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