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kupik [55]
3 years ago
10

Then, the dot ran from −66 to −17. What distance did it cover? If this run took the dot 7 minutes, what was its average speed?

Mathematics
1 answer:
stich3 [128]3 years ago
6 0

ANSWER

The average speed is 7m/s.

EXPLANATION

If the dot ran from -66 to -17, then the distance covered is

| - 17 -  - 66|  = 49

The average speed

=  \frac{distance \: covered}{time \: taken}

Substitute

=  \frac{49}{7}

Simplify;

= 7m {s}^{ - 1}

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On a map, a distance of 2 cm represents 15 km. What is the distance (in km) between two cities that are 11 cm apart on the map?
GenaCL600 [577]

Answer:

82.5 km

Step-by-step explanation:

Given:

\frac{2cm}{15km} =\frac{11cm}{?km}

Cross-multiply.

2x = 11(15)

Divide both sides by 2 and solve for x.

x = 82.5 km

Please mark as Brainliest! :)

6 0
4 years ago
Help, please!! What is mA?
Inga [223]

Answer:

38°

Step-by-step explanation:

The measure of required angle can be obtained by using cosine law.

From the given triangle we find that:

a = 5, b = 3, c = 7,

Since,

cos (A) = (b^2 +c^2 - a^2) /2bc

Therefore,

cos (A) = (3^2 + 7^2 - 5^2) /(2*3*7)

cos (A) = (9 + 49 - 25) /(42)

cos (A) = (33) /(42)

cos (A) = 0.785714286

A = arccos(0.785714286)

A = 38.213210675°

A = 38°

4 0
4 years ago
What is 7.2 times 10 to the 7th power times 14.6 x 10 to the 5th power?
Alexxx [7]

7 x 10^{7}  times 14.6 x10^{5}

<em>Multiply 7 and 14.6 and add exponents</em>

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hope that helps :)

6 0
3 years ago
Read 2 more answers
Write the circumference of a circle with a diameter of 49 inches in terms of pi
AleksAgata [21]

Answer:

153.94

Step-by-step explanation:

c=2r*r

The radius is half of the diameter.

To find the radius you will divide 49 inches by 2.

You should get a total of 24.5

Now that you have your radius you are going to use the circumference formula to solve.

C= 2r*r

C=2(24.5)*(24.5)

type that into the calculator (without the parenthesis) and boom your done!

You answer should be 153.938

then you round to get a total of 153.94

I hope i was able to help!

5 0
3 years ago
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The expression for the perimeter of a square with a perimeter of 5 miles is?
Aleksandr-060686 [28]

Answer:

5/4 * 4

Step-by-step explanation:

P = 5 = 4L

4L = 5

L = 5/4

4 0
4 years ago
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