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Allushta [10]
3 years ago
9

SELECT ALL THAT APPLY

Mathematics
1 answer:
tatyana61 [14]3 years ago
6 0

Answer:

The answer I THINK was the best is the fourth one !

Step-by-step explanation:

I think because before you calculate, you have To put 78 / with an x because you still don't know what is the number !

And after you have To equal this with 55/100 To know the answer !

I hope i helped you !

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in a building there are 32 apartments with 2 bedrooms and 3 bedrooms. knowing that there are 86 bedrooms in total, write a syste
xenn [34]
Let the number of 2 bedroom apartments be x and that of 3 bedroom apartments be y, then

x + y = 32
2x + 3y = 86
6 0
3 years ago
Femi keeps track of a number of gallons of gasoline he uses for each of several trips. Part A: Complete the table. The vehicle c
Katena32 [7]
The table is attached.

A) The gasoline consume grows as the distance traveled increases. This means that the two quantities are directly proportional.

Therefore, the proportionality constant is given by:
k = gasoline / distance
   = 2 / 40
   = 0.05
We could have used also:
k = 3 / 60
   = 0.05

In order to find the gasoline consumed, you need to multiply the distance by the proportionality constant:
30 × 0.05 = 1.5
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In order to find the distance traveled, you need to divide the gasoline consumed by the proportionality constant:
3.5 ÷ 0.05 = 70

B) The function of the proportionality found is:
y = 0.05·x
where:
x = distance
y = gasoline

Therefore: 
y = 0.05·110 = 5.5 

Femi for a trip of 110 miles expects to use 5.5 gallons of gasoline.

7 0
3 years ago
Abby donated 20% of her babysitting income to her favorite charity.  If she made $45 in October and $85 in November, how much di
soldier1979 [14.2K]

Answer:

the answer is 26 dollars

6 0
3 years ago
Which answer shows 9 x 10 ^ -5 written in standard form ?
coldgirl [10]

Answer:

  D  0.00009

Step-by-step explanation:

9 × 10^-5 = 9 × 1/10^5 = 9 × 1/100,000

  = 9 × 0.00001

  = 0.00009

_____

<em>Comment on place value</em>

The exponent of 10 associated with the place value in a decimal number increases from 0 to the left of the decimal point, and decreases from -1 to the right of the decimal point:

  100. = 10²

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  0.01 = 10⁻²

  0.001 = 10⁻³

  0.0001 = 10⁻⁴

  0.00001 = 10⁻⁵

This simple realization can help you immensely with scientific notation.

5 0
3 years ago
Does anyone know how to do functions?
trasher [3.6K]
I think 1 is a but I’m not sure
5 0
4 years ago
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