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lisov135 [29]
3 years ago
12

Find the product of 51 and -2.5.

Mathematics
1 answer:
Bad White [126]3 years ago
4 0
Answer: C. -102 + (-25.5)
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Please help with #8 !!
Sophie [7]
That would be 6.64 / 1.35  =  4.9 times (to the nearest tenth.)
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Enter the expression using exponents. 1\2 × 1\2 × 1\2 × 1\2 × 1\2 × 1\2 × 1\2
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Answer:

<h2>1/2⁷</h2>

Step-by-step explanation:

1/2 is multiplied by itself 7 times, thus an exponent of 7.

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The equation r=u/st is equivalent to u = rst.<br><br> True<br> False
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the length of a rectangle is equal to triple the width . if the perimeter is 8 centimeters .what is the length and the width of
madam [21]

Answer:

Length = 3 cm

Width = 1 cm

Step-by-step explanation:

Let the length of rectangle be l and width of rectangle be w.

According to problem,

l = 3w  {Length of rectangle is equal to triple the width}

And Perimeter,P = 8 cm

Since, P = 2 ( l + w )

or 8 = 2( l + w)

Plug l =3w in the above perimeter equation.

We get:

8 = 2( 3w + w)

8 = 2(4w)

8 = 8w

or    w = 1 cm

Then length ,l = 3w =3 * 1 = 3 cm

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10.) Kelly is flying a kite to which the angle of elevation is
jarptica [38.1K]

Answer:

61.08m

Step-by-step explanation:

Let " l " be the length of the rope and " θ " the angle at which it is raised. In other words:

  • l = 65m
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As you can see, there has been made a right angle triangle. So:

sin70 =  \frac{h}{l}  \\ h = l \times sin70 \\ h = 65 \times 0.9397 = 61.08 \\ h = 61.08

So the kite is approximately 61.08m above the ground.

In order to find the sin70° i used a calculator.

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