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Bad White [126]
2 years ago
9

The triangle has a right angle at the middle letter. In AABC, Ĉ = 40°, BC = 4 cm. Find AB.

Mathematics
1 answer:
Ilia_Sergeevich [38]2 years ago
5 0
Tan 40 degree= opposite (ab)/adjacent (4)
.839=ab/4
Ab=3.36cm
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NEED HELP!!! URGENT.................
OleMash [197]

Answer:

C because Thats the only one that is proportional on all three;hope this helps if it is right

6 0
3 years ago
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Explain how you can use place-value patterns to describe how 50 and 5,000 compare.
Kobotan [32]
<span>=> 50 and 5000
Place value are very useful to compare given numbers. Place value gives ideas on how big the number is and helps you compare easily what is greater and lesser.

Let’s use the given number:
50 => 50 has 2 digit whole number, which means it has a place value of tens
=> 5 tens and 0 ones.

5000 => is a 4 digit whole number, which means it as a place value of 5000
=> 5 thousands 0 hundreds, 0 tens and 0 ones.

5000 is 100 times greater than 50.
=> 50 x 100 = 5000</span>



6 0
3 years ago
Which system of equations has a solution of approximately (1.8,-0.9)
Solnce55 [7]

Solve the equation systems or set the values x = 1.8 and y = -0.9 on the equation and check the equality.

A.

6x - 5y = 15

L = 6(1.8) - 5(-0.9) = 10.8 + 4.5 = 15.3

R = 15

L ≈ R

x + 2y = 0

L = 1.8 + 2(-0.9) = 1.8 - 1.8 = 0

L = R

B.

4x + 5y = 8

L = 4(1.8) + 5(-0.9) = 7.2 - 4.5 = 2.7

R = 8

L ≠ R

C.

x - 2y = 4

L = 1.8 - 2(-0.9) = 1.8 + 1.8 = 3.6

R = 4

L ≈ R

4x + 5y = 8

L = 4(1.8) + 5(-0.9) = 7.2 - 4.5 = 2.7

R = 8

L ≠ R

D.

6x - 5y = 15

L = 6(1.8) - 5(-0.9) = 10.8 + 4.5 = 15.3

R = 15

L ≈ R

x - 2y = 4

L = 1.8 - 2(-0.9) = 1.8 + 1.8 = 3.6

R = 4

L ≈ R

We have two probability solutions: A and D.

But I think, Your answer is A.

3 0
3 years ago
Read 2 more answers
There are 1200 students at silver lake middle school 700 Are eighth graders what percent of the students are in the eighth grade
Leni [432]
(700/1200)*100 = 58.33%, rounding to the nearest 10th of à percent we get 60%
7 0
3 years ago
8x-5y=21 simultaneous linear equation<br>2x+9y=-5
olya-2409 [2.1K]

Answer:

x=2 and y=-1

Step-by-step explanation:

If two equations are given, we can solve one of the equation in terms of single variable and put it in the other equation which will further give the value of x and y.

For the given equations:

8x-5y=21              Equation:1

2x+9y=-5             Equation:2

Solving equation multiply equation 2 with 4 on both the sides

8x+36y=-20        Equation 3

Subtracting Equation:3 from Equation:1

8x-5y-(8x+36y)=21-(-20)\\8x-5y-8x-36y=21+20\\-41y=41\\y=-1

Putting value of 'y' in Equation:2 which will give the value of x

2x+9y=-5\\2x+9(-1)=-5\\2x-9=-5\\2x=4\\x=2

8 0
3 years ago
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