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Nataly [62]
3 years ago
13

Please HELP !

Mathematics
2 answers:
vekshin13 years ago
5 0

Answer: 90 mph

Step-by-step explanation:

so if 60 miles in 40 minutes have of 40 is 20 and 40 +20 = 60

so half of 60 is 30. so therefore 90 miles is 60 mins.

anyanavicka [17]3 years ago
3 0

Answer:

to be honest i dont know  but i think it is 2400

Step-by-step explanation:

you need to do miles x mins i think i dont knoe try ask your family members

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Sergio [31]
What is your Question...
3 0
3 years ago
Find the measures of the interior
Ainat [17]

Answer:

Angle 1 =  108°

Angle 2 =  72°

Angle 3 =  120°

Angle 4 =  96°

Angle 5 =  144°

Step-by-step explanation:

We need to find the measures of the interior  angles in a pentagon if the measure  of each consecutive angle is in the  ratio 9:6:10:8:12.

Let x be the common ratio

So, we can write:

Angle 1 = 9x

Angle 2 = 6x

Angle 3 = 10x

Angle 4 = 8x

Angle 5 = 12x

We know that the <em>sum of all angles of pentagon = 540</em>

So, adding all angles and equal them to 540, we can find value of x

9x+6x+10x+8x+12x=540\\45x=540\\x=\frac{540}{45}\\x=12

So, we get the value of x: x=12

Now, calculating the angles by putting x=12:

Angle 1 = 9x = 9(12) = 108°

Angle 2 = 6x = 6(12) = 72°

Angle 3 = 10x = 10(12) = 120°

Angle 4 = 8x = 8(12) = 96°

Angle 5 = 12x= 12(12) = 144°

6 0
3 years ago
Selena and Drake are evaluating the expression , when . Selena's Work Drake's Work Who is correct and why? Selena is incorrect b
Shtirlitz [24]

Answer:

Selena is correct because she simplified correctly and then evaluated correctly after substituting the values for the variables.

I did this lesson i asked my teacher to help me but i did this problem on my own so i hope its right :)

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
A bakery sold 115 cupcakes in one day. The head baker predicted he would sell 95 cupcakes that day. What was the percent error o
Brut [27]
It was about 17.4% 
======================================================================

% error=
actual value-estimated value 
Then divide that by actual value
5 0
3 years ago
R+(-5r)<br> I really need a step by step answer
Dennis_Churaev [7]

Answer:

+×- =-

r-5r

-4r is the best answer

5 0
3 years ago
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