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eimsori [14]
3 years ago
13

M minutes less than 80 minutes is 15 minutes

Mathematics
2 answers:
Tomtit [17]3 years ago
7 0

"80 minutes" . . . . . . . . . . . . . .            80

"M minutes less" . . . . . . . . . . .            80 - M

"... is  5 minutes" . . . . . . . . .                80 - M   =  15

Add 'M' to each side . . . . . . .              80          =  15 + M 

Subtract  15  from each side               80 - 15  =  M

Do the subtraction on the left side:     65          =  M
vesna_86 [32]3 years ago
5 0
In this problem we know that total minutes are 80 and
80 - M = 15
let's solve by steps 

Step 1 - adding M on both sides
80 - M + M = 15 + M
80 = 15 + M

Step 2 - subtract 15 from both sides
80 -  15 = 15 - 15 + M
65 = M

So, 80 - 65 = 15 
Hence verified.

Hope this helps you :)
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Which of the following constants can be added to x2 + x to form a perfect square trinomial? a.1/9 b.4/9 c.4 1/9
xenn [34]
You can add 4/9. 

A simple trick is to look at the numerator and denominator separately, if they're both perfect squares then you're good (4, 2^2, check. 9, 3^2, check.)
8 0
3 years ago
A baby weighed 7.25 pounds at birth. At the end of 8 months, the baby weighed 212
Vinil7 [7]

Answer:

1537pounds

Step-by-step explanation:

Given parameters:

  Weight of baby at birth  = 7.25 pounds

   

Unknown:

Weight at the end of 8months = ?

Solution:

 From the second sentence;

    Weight at the end of the eighth month = 212 x weight at birth.

Input the parameters and solve;

  Weight at the end of eighth month = 212 x  7.25  = 1537pounds

7 0
3 years ago
This graph represents a proportional relationship between the number of months, x, data is used on a cell phone and the total co
valentinak56 [21]

Answer:

The equation that represents the graph is y = 40x

The new equation would be y = 45x

Step-by-step explanation:

As y increases by 40, x increases by 1, so 40/1, or 40

New equation: $90 per 2 months, y = 90, x = 2, 90/2 = 45

3 0
2 years ago
A. 112 cm2<br><br> B. 64 cm2<br><br> C. 48 cm2<br><br> D. 56 cm2
goldfiish [28.3K]
The area of a triangle is taken by multiplying the length of the base times the height then dividing by 2.
l = 14cm
h = 8cm
A = \frac{l * h}{2}
A = \frac{14 * 8}{2}
A = \frac{112}{2}
A = 56 cm^{2}
6 0
3 years ago
45÷___=-5 what is the answer?
tatyana61 [14]

negative 8 because 45/-9 = -5

4 0
3 years ago
Read 2 more answers
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