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viktelen [127]
3 years ago
8

Is the given value of the variable a solution of the equation? Write yes or no. The first one is done for you. 1. x  1  5; x 

4 _________________ 2. 13  w  10; w  2 _________________ 3. 2v  12; v  10 _________________ 4. p 7 _________________ 5. 8  w  11; w  3 _________________ 6. 4t  20; t  5 _________________
Mathematics
1 answer:
harkovskaia [24]3 years ago
3 0

Answer:

umm lets seeeee

Step-by-step explanation:

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Eric's average income for the four months of the year 1450 point to $5 what must be his average income for the remaining eight m
Zielflug [23.3K]

Answer:

$2668.63

Step-by-step explanation:

If the average of 4 months is $5

Meaning the total sum for 4 months

4×5 =$20

If the average for the year was $1780.75​

It means the total sum for a year is;

$1780.75​×12 =$21369

This means the money received for the remaining 8 months is;

$21369-$20=$21349

Hence the average income for the remaining 8months is ;

The total amount for 8 months / 8;

$21349/8= $2668.625

$2668.63

8 0
3 years ago
Does anyone know this lol i just need a short explanation
maks197457 [2]

Answer: pretty sure it’s because the left and bottom sides add up to equal the top side

Step-by-step explanation:

4 0
3 years ago
Using the distrubutive proberty an experstion equvalent to 45+72
Colt1911 [192]

solution:

45+72\\=(9\times 5)+(9\times 8)\\=9(5+8)\\=117

3 0
3 years ago
The dimensions of a rectangle are sqrt 50a^3b^3 and sqrt 200a^3
nignag [31]

Answer:

The student incorrectly simplified 10ab root 2a + 20a root 2a

Step-by-step explanation:

3 0
4 years ago
Read 2 more answers
0 = -1/14 x^2 + 4x +5<br><br> I need to solve for x but I don't get it, PLEASE EXPLAIN AND HELP!!
MariettaO [177]
Any time you have a fraction within an equation, multiply the entire equation by the denominator to clear the fraction. Since the lead term is negative, we can multiply that away as well
(-14) (0=-1/14x²+4x+5)      [now distribute]

0=x²-56x+70      [try to factor into binomials first]
Since 70 only has prime factors of 2·5·7, there is no combination which equals (-56). Use the quadratic formula, or complete the square. I'll use quadratic:

x=<u>-b+/-√(b²-4ac)</u>
            2a
a=1, b=(-56), c=70

x= <u>-(-56)+/- √((-56)²-4(1)(70)</u>
                  2(1)
x= <u>56+/- √(3136-280)
</u>               2
<u />x=<u>56+/-√(2856)</u>
             2
x=<u>56+/-√(2³·3·119)</u>
               2

x=<u>56+/-2√(714)</u>
             2

x=28+√714; x=28-√714



5 0
3 years ago
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