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valentina_108 [34]
3 years ago
5

For any parallelogram what is not always true

Mathematics
2 answers:
tresset_1 [31]3 years ago
7 0

Answer:

The diagonals are congruent.

Step-by-step explanation:

enyata [817]3 years ago
4 0

Answer:

1) The diagonals are congruent.

3) The opposite angles are congruent.

4) The opposite sides are parallel.

Step-by-step explanation:Two pairs of opposite sides are congruent. The diagonals are perpendicular to each other. 4 In parallelogram QRST, diagonal is drawn. Which statement must always be true?

if it does not work sorry

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Plz help it’s due tonight i rlly need help thanks
belka [17]
i think we need some more information or something is there any other information that they give you for this question?
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3 years ago
The quadratic function f(x)=ax^2+4x+c has a maximum at the point (1, 9) . What are the values of a and c?
valina [46]

Answer: a = -2  and  c = 7

Step-by-step explanation:

(this answer uses some basic calculus)

We know that f'(x) = 2ax + 4, and since (1,9) is a maximum of f, then f'(1) = 0. That means 2a + 4 = 0, so \boxed{a = -2}. Then since f(1) = 9, we have -2(1)^2 + 4(1) + c = 9, so \boxed{c = 7}.

6 0
3 years ago
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A simple random sample of size n is drawn from a population that is normally distributed. The sample​ mean, x overbar​, is found
Citrus2011 [14]

Answer:

a:  105.2 < µ < 112.8

b:  104.872 < µ < 113.128

c:  105.841 < µ < 112.159

d:  No, because n < 30

Step-by-step explanation:

For a - c, see attached photos for work.  There are 2 formulas to use.  The steps for constructing any confidence interval are the same, you will just use different numbers in the formula depending on what data is given to you.  

d:  With large sample sizes, the data often resembles normally distributed data, so we can still construct confidence intervals from the data.

7 0
4 years ago
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4/7 × 3/8= show how you got answer
seraphim [82]

Answer:

4/7 × 3/8=0.214285714

Step-by-step explanation:

4/7 × 3/8=0.214285714

8 0
3 years ago
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Compare the dimensions of the prisms. How many times greater is the surface area of the green prism than the surface area of the
vfiekz [6]

Answer:

The surface area of the green prism is 6.25 times greater than the surface area of the blue prism.

Step-by-step explanation:

The surface area of both prisms consists of six rectangles: top, base, front, back, left side and right side. In terms of surface area, top=base, front=back and left side=right side, so the total surface area for each prism is:

2(base area)+2(back area)+2(side area)

=2((base area)+(back area)+(side area))

Area of blue prism = 2((base area)+(back area)+(side area))

=2((4*2)+(4*10)+(2*10))

=2(8+40+20)

=2(68)

=136 cm²

Area of green prism = 2((base area)+(back area)+(side area))

=2((10*5)+(25*10)+(25*5))

=2(50+250+125)

=2(425)

=850 cm²

850cm² is 6.25 times greater than 136cm² <em>(850/136=6.25)</em>, so therefore, the surface area of the green prism is 6.25 times greater than the surface area of the blue prism.

3 0
3 years ago
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