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Paraphin [41]
3 years ago
15

Please can someone show me how to do this. Thanks

Mathematics
1 answer:
Nadusha1986 [10]3 years ago
5 0

Answer:

x equals 3.00cm

Step-by-step explanation:

Use Pythagoras' Theorem.

a = (14x-45)

b = (16x+27)

c = (25x)

Plug in the variables above into Pythagoras' Theorem that is, a^2+b^2=c^2.

Solve the resulting quadratic equation and reject the negative answer as length is always positive.

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If two angles are suplementar ang congruent, the measure of each angle is 90 degree true or false
Westkost [7]

True, bc they add up to 180 and are the same size.

3 0
3 years ago
Which shows the best estimate to use<br> to find 43 × 78?
Over [174]

Answer:

The best estimate for 43x78 is 40x80

Step-by-step explanation:

43 rounded to the nearest ten is 40.

78 rounded to the nearest ten is 80.  

The answer to 40x80 is 3200

4 0
3 years ago
What is the equation of a line that passes through the points (–3, 4) and (2, 8)?
sveta [45]

Answer:

=5

Step-by-step explanation:

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3 0
3 years ago
Read 2 more answers
Which is the value of this expression when a=5 and k=-2
Zinaida [17]

Answer:

Option C is correct.

Step-by-step explanation:

We are given the expression:

(\frac{3^2a^{-2}}{3a^{-1}})^k

The value of a =5 and k = -2

Putting the values and solving

=(\frac{3^2*5^{-2}}{3*5^{-1}})^-2\\=(\frac{3^{2-1}}{5^{-1+2}})^-2\\=(\frac{3^{1}}{5^{1}})^-2\\\\=(\frac{3}{5})^-2\\if \,\,a^{-1} \,\,then\,\, 1/a\\=\frac{(3)^{-2}}{(5)^{-2}}\\ Can\,\,be\,\,written\,\,as\\\\=\frac{(5)^{2}}{(3)^{2}} \\=\frac{25}{9}

Option C is correct.

3 0
3 years ago
A hyena runs at a rate 32 miles per hour. Which equation models the situation? H = time spent running, in hours d = distance run
Nadusha1986 [10]

Answer:

32h = d

Step-by-step explanation:

IM SMART TRUST ME

4 0
3 years ago
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