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solniwko [45]
4 years ago
9

Anyone know the answers to these?

Mathematics
1 answer:
Anettt [7]4 years ago
8 0

Answer:

<em>3. No.</em>

<em>4. No, not necessarily.</em>

<em>5. Yes.</em>

Step-by-step explanation:

3. No. With the two triangles, she knows that one angle of each is a right angle. She does not know anything about side lengths. She cannot prove the triangles are congruent.

4. We cannot prove the triangles are congruent. With the perpendicular segments, there is a pair of congruent, right angles. Then there are two pairs of sides that are congruent, but the order is SSA, and SSA does not prove triangles congruent.

5. Using the two sets of perpendicular lines, you have two congruent, right angles. Then you have the other pair of given congruent angles. Finally, segment RT is congruent to itself. This makes AAS. the triangles are congruent.

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What is the measure of &lt;2?
tensa zangetsu [6.8K]

Answer:

step 1. <2 + 40° = <1

step 2. <1 + 72° = 180°

step 3. <1 = 108°

step 4. <2 = 108° - 40° = 68°.

4 0
3 years ago
PLS HELP ME 50 POINTS AND I WILL MARK THE BRAINLIEST
dusya [7]

Answer:

1. 392 in², 2. 94.99 cm², 3. 145.2 ft², 4. 161.5 m², 5. 17 ft and 81 cm

Step-by-step explanation:

1. A = 16 x 19

A = 304

A = 1/2(11x16)
A = 1/2(176)
A = 88
304 + 88 = 392 in²

2. A = πr²
A = 3.14*5.5²
A = 3.14*30.25
A = 94.985
A = 94.99 cm²

3. A = 1/2(bh)
A = 1/2(11x26.4)
A = 1/2(290.4)
A = 145.2 ft²

4. A = bh
A = 9.5*17
A = 161.5 m²

5. part 1
A = (1/2) · (p + q) · h

112 = (1/2)(11+q)(8)
112 = 4(11+q)
112 = 44 + 4q
68 = 4q
17 = q

17 ft

5. part 2
A = lw
364.5 = 27w
13.5 = w
P = 2l + 2w
P = 2(27) + 2(13.5)
P = 54 + 27
P = 81
81 cm


Hope this helps :)


5 0
3 years ago
Write an expression to find the perimeter of<br> the rectangle below:<br> 2x - 3y<br> 3x - 1
LuckyWell [14K]

Answer:

2(5x-3y-1)

Step-by-step explanation:

perimeter of a rectangle formula:

2l+2w

l=length(2x-3y)5x

w=width(3x-1)

2(2x-3y)+2(3x-1)

4x-6y+6x-2

10x-6y-2

2) all of these numbers have a gcf of 2 so lets divide this equation by 2:

2(5x-3y-1)

hope this helps!

4 0
4 years ago
What is 15 cm/year converted to inches per month? Round to the nearest tenth.
topjm [15]

Answer:

0.5 inches per month

Step-by-step explanation:

There are nearly 0.3937 inches in 1 cm, so

1 \ cm \approx 0.03937 \ in\\ \\15\ cm\approx 5.9055\ in

There are 12 months in the year, so'

15 centimeters per year is equivalent to

15 \ cm/year\approx \dfrac{5.9055}{12}\ in/month\\\approx 0.492125\ in/month\\\approx 0.5\ in/month\\\\

7 0
4 years ago
Which line segments are diameters of circle E?
sertanlavr [38]
A diameter of a circle has to pass through the centre of the circle
The lines that pass through the centre are BD and AC
8 0
4 years ago
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