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Phantasy [73]
2 years ago
9

1. Which of the following statements is NOT a property of parallelograms?

Mathematics
2 answers:
Lady_Fox [76]2 years ago
7 0

Answer:

1.(b) All angles are right angles

2.angle c and angle a are alternate exterior angles.

neonofarm [45]2 years ago
3 0

Answer:

1.(b) All angles are right angles

2.angle c and angle a are alternate exterior angles.

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A real estate agent makes commissions of $6,500 in January, $4,500 in February, and $4,000 in March. What is the agent's average
Andre45 [30]
M= (6500+4500+4000)/3= 15000/3=5000 $
8 0
3 years ago
The roots of the equation 3x²-2x-4=0 are J and K. Evaluate J² + K².
melamori03 [73]

Answer:

28/9

Step-by-step explanation:

If the roots are J and K, then:

3 (x − J) (x − K) = 0

3 (x² − (J+K)x + JK) = 0

So if we factor out the leading coefficient:

3x² − 2x − 4 = 0

3(x² − 2/3x − 4/3) = 0

The coefficient of the second term is the sum of the roots:

J + K = 2/3

And the constant is the product of the roots:

JK = -4/3

If we take the sum of the roots and square it:

(J + K)² = (2/3)²

J² + 2JK + K² = 4/9

And subtract twice the product:

J² + K² = 4/9 − 2JK

J² + K² = 4/9 − 2(-4/3)

J² + K² = 4/9 + 8/3

J² + k² = 28/9

6 0
3 years ago
Pls help meh
san4es73 [151]

Answer:

7.1 (7.06 rounded to the tenth)

Step-by-step explanation:

The formula for Area of a Circle is: π·r²

R = Radius

π = pi, or 3.14

As long as you know the formula, this is easy!

In class, you may have already been told that the radius is <em>half </em>of the diameter.

1. Half of 3 ft is 1.5 ft.

2. Plug 1.5 in for r, in your calculator

3. Do the calculation, and you should come out to get 7.06858347058

4. Round it!

Finding area for a circle is satisfying, isn't it? xD

5 0
2 years ago
The ratio of girls to boys in the junior high band is 5 to 7. At the beginning of year, there were 72 students in the band. By t
rusak2 [61]
Ratio is 5girls:7boys with total 72 students
5+7= 12
72➗12= 6
6(5:7)= 30 girls : 42 boys

New ratio is 3:4 with 48 boys

48➗4= 12

So for girls 3x12= 36

So started with 30 girls ended with 36 girls... 6 girls joined band during the school year.
7 0
2 years ago
Read 2 more answers
4−d&lt;4+d, solve for d<br><br> d&gt;0<br> d&gt;−4<br> d&gt;−8<br> d&gt;8
Harrizon [31]
4-2d<4
-2d>0
d>0 the answer to the question


4 0
3 years ago
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