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Nonamiya [84]
3 years ago
12

3.5x + 3 - 4.9x = 4(0.4x + 3) PLEASE HELP, WITH STEPS TOO

Mathematics
2 answers:
NikAS [45]3 years ago
7 0
-3 is the right answer !
Romashka [77]3 years ago
3 0

Answer:

x= -3

Step-by-step explanation:

PEMDAS order of operations

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morpeh [17]

Answer:

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Step-by-step explanation:

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2 years ago
Read 2 more answers
Howhowhow?how??? how would you calculate
Liula [17]

Ok sooooooooooo

Lets say your two fractions are

13/26 and 20/40

you can divide the bottom number by the top one and if you get the same answer for both then they are equivalent. For these you get 2 for both, which means they are equivalent.

another example would be if your fractions are

2/5 and 4/10

You can say well 2*2 equals 4 And 5*2 equals ten so these are equivalent fractions.

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2 years ago
What if a triangle has 23 mm 20 mm 13 mm angles 62° 72° 46°
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5 0
3 years ago
Factor completely 81a^2+36a+4
Svet_ta [14]
<span><span>(<span><span>9a</span>+2</span>)</span><span>(<span><span>9a</span>+2</span>) or, </span></span><span><span>(<span><span>9a</span>+2</span>)</span><span>^2</span></span>

6 0
3 years ago
A study of the relationship between age and various visual functions (such as acuity and depth perception) reported the followin
Mila [183]

Answer:

Σxi =56.61

Σxi²=196.23

Step-by-step explanation:

X be the random variable represents area of scleral lamina (mm2) from human optic nerve heads

Σxi can be obtain by adding all x values

Σxi=2.79+2.53+2.78+3.79+2.33+2.72+3.88+4.15+3.79+4.43+3.47+4.47+2.5+3.61+2.77+3.53+3.07=56.61

Σxi =56.61

Σxi² can be obtained by squaring x values and then adding them.

Σxi²=2.79²+2.53²+2.78²+3.79²+2.33²+2.72²+3.88²+4.15²+3.79²+4.43²+3.47²+4.47²+2.5²+3.61²+2.77²+3.53²+3.07²=196.233

Σxi²=196.23

8 0
2 years ago
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