MATHEMATICS MIDDLE SCHOOL

Tell whether the ratio form a proportion
14/21 =26/39

Answers

Answer 1
Answer: if the ratios form a proportion, the ratios will be equal. first we'll simplify the ratios:

14/21
divide top and bottom by 7
2/3

26/39
divide top and bottom by 13
2/3

ss you can see now, the ratios are indeed equal, so they do form a proportion

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I need help with 8z-22=3(3z+11)-z with work please!

Answers

8z - 22= 3(3z +11) - z
8z - 22= 9z + 33 - z
8z - 9z + z = 33 + 22
0 = 55
Conclusion: No Solution

Evaluate -6 - (-3)​

Answers

Answer: -3

Step-by-step explanation: In this problem we are asked to subtract -6 - (-3). It's important to understand that when we have minus a negative, we can change it to plus a positive.

Now we have the following.

-6 + 3

Starting at 0 on our number line, -6 moves us 6 units to the left. Then from there, positive 3 moves us 3 units back to the right and we end up at -3.

Therefore, -6 - (-3) = -3

A set of equations is given below:


Equation M: y = 3x + 4

Equation P: y = 3x + 7


Which of the following options is true about the solution to the given set of equations?


A. No Solution

B. One Solution

C. Two Solutions

D. Infinite Solutions

Answers

These would have infinite solutions because this is a slope-intercept equation. Since you are provided with the y-intercept in both, you can put anything in for the slope and it will work.

Hope this helps!

Answer:

a

Step-by-step explanation:

What is the simplified expression for:3 to the power of 3 times 3 to the power of three
_____________________________________
3 to the power of 4

Answers

81=3^4 
I hope this helps! Good luck!

Which of the following angle measurements might you find in a right triangle?45°, 45°, 90°
50°, 50°, 90°
60°, 60°, 60°
90°, 90°, 90°

Answers

Answer:

The first one! 45,45,90

Step-by-step explanation:

The sum of angle is 180, so Only

45+45+90=180

50+50+90=190 it is greater than 180 ist not Ok

60+60+90=210 it is not ok

90+90+90=270 is not ok

Answer:

you  wil definetly find 90

Step-by-step explanation:

key word right triangle it has a right angle

If cot A = 1.96000 and the acute angle A has to be determined, which one of the following expressionswill give the seconds of the angle?

Answers

cot A = 1.96
tan A = 1 / cot A
tan A = 1 / 1.96
tan A = 0.510204082
A = tan^(-1) 0.510204082
A= 27.03086026°
A= 27° 0.03086026°
A= 27° 0.03086026° x (60' / 1°)
A= 27° 1.8516156'
A= 27° 1' 0.8516156'
A= 27° 1' 0.8516156' x (60" / 1')
A= 27° 1' 0.8516156 x 60"

Then the expression for the seconds is 0.8516156 x 60"

In Option A, we have (-0.00120)/(-0.00141) x 60" = 0.851063830 x 60"
In Option B, we have -0.00141/0.00120 x 60" = -1.175 x 60"
In Option C, we have 0.00806/0.01159 x 60" = 0.695427092 x 60"
In Option D, we have (-0.01159)/(-0.00806) x 60" = 1.437965261 x 60"

Answer: Option A: (-0.00120)/(-0.00141) x 60"
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