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shusha [124]
3 years ago
8

What is the sum? 7+2? 22 - 64

Mathematics
1 answer:
iVinArrow [24]3 years ago
8 0

Answer:

The first one equals  9 and the second one equals -42

Step-by-step explanation:

hope this helps

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A girl is exactly one yard tall and her sister is 1/3 of a yard taller. how many total inches tall are they added together.
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Total height = 1yd + 1yd+1/3yd = 2 1/3 yd = 7/3 yd

7/3 yd  = 7/3 * 36 inch = 84 inch
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4 years ago
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An educator wants to see how the number of absences for a student in her class affects the student’s final grade. The data obtai
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Answer:

Simple linear equation is :

Y = 86.784 - 2.67x

Step-by-step explanation:

The educator wants to see the relationship between no of absences and final grades of the student. No. of absence of student is independent variable while final grade is dependent variable. The final grades of the student are dependent on the no. of absence they do.

b = Sxy / Sxx

b =  { 2312 [ 37 * 422 ] / 6 } / 337 - 37^2 / 6 = -2.67

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5 0
3 years ago
What is the greatest<br> common factor (GCF)<br> of 40 and 42?
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7 0
3 years ago
Please help!!! 100 points if correct!!! please actually answer
rosijanka [135]

Answer:

see below

Step-by-step explanation:

What is the theoretical probability that the family has two dogs or two cats? (1/2)

The choices are dd, dc, cd, cc

There are 4 choices = dd or cc/ total = 2/4 = 1/2

Let the heads of the coin be dogs and the tails of a coin be cats

Flip two coins and coin A is the first pet and coin B is the second pet

heads , heads = 10

heads, tails  14

tails heads  =13

tails tails =  13

          total 50

Experimental probability  2 dogs or 2 cats = ( hh, tt) /total = ( 10+13) /50 =                    23/50

If we had 3 pets  

what is the theoretical probability that they have three dogs or three cats?

ddd, ddc, dcd, dcc, ccc, ccd ,cdc, cdd

There are 8 options

 ddd or ccc/ total = 2/8 = 1/4

Let the heads of the coin be dogs and the tails of a coin be cats

Flip three coins and coin A is the first pet and coin B is the second pet Coin C be the third pet

4 0
3 years ago
What is the solution of the system? use the substitution method. {y−2x=816 4x=2y the only solution is (24, 0) . the only solutio
Butoxors [25]
To determine the answer it would be helpful if we write this equation into the slope intercept form which is expressed as:

y = mx+b

<span> y−2x=816
y = 2x + 816

4x=2y
y = 2x

We can see that the slope of the two equations are the same. Therefore, they are parallel which means they do not intersect. The correct answer is the third option, there is no solution.</span>
5 0
3 years ago
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