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LUCKY_DIMON [66]
3 years ago
9

The number of positive resl rootd for the expression for -3x³+8x²-7x+10=0 is less than or equal to​

Mathematics
1 answer:
Damm [24]3 years ago
5 0

Step-by-step explanation:

By Descartes' Rule of Signs, f(x) = -3x³ + 8x² - 7x + 10 changes sign 3 times, so there are 1 or 3 positive roots.

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Evaluate a+4 when a =7
LenaWriter [7]

If a = 7 then a+4 = 11.

a+4 is basically 7+4.

Hope this helps :)

6 0
3 years ago
Read 2 more answers
Sam wanted to buy candy for all of his friends to share at lunch. One pound of chocolates cost $6.95, but Sim only needs 0.6 of
OLga [1]

Answer:

The answer to your question is cost of 0.6 pound of candy $4.17

Step-by-step explanation:

Data

1 pound of candy = $6.95

only 0.6 pounds

final cost = ?

Process

1.- Use proportions to find the cost of 0.6 pounds of candy

               1 pound of candy -------------- $6.95

               0.6 pound of candy ----------   x

2.- Use cross multiplication

                 x = (0.6 x 6.95) / 1

3.- Simplification and result

                 x = $ 4.17          

5 0
3 years ago
write in point slope form the equation of a line through (-3, 8) and (7, 6). A. y-6=1/5(x-7), B. y-8=-1/5(x+3), C. y-8=1/5(x=3)
Anna [14]
First you have to find the slope, the slope formula is m = y2 - y1/ x2 - x1

m = y2 - y1/ x2 - x1       (-3, 8)  (7, 6)
m = 6 - 8/ 7 - (-3)
m = -2/10
m = -1/5

point-slope formula;
y - y1 = m(x - x1)            m = -1/5   (-3, 8)
y - 8 = -1/5(x - (-3)
y - 8 = -1/5(x + 3)

so the answer is, B.

hope this helps, God bless!
4 0
4 years ago
Mitch needs four 10 gram samples of NaCl (Sodium Chloride) for an experiment. Mitch is using a balance that measures to 1/10 of
trapecia [35]

<span>the complete question in the attached figure
</span>
The answer is the option A 9.9 grams
because the balance is accurate to the nearest 1/10 gram; thus, the <span>highest level of accuracy appropriate to the limitations of the balance is 0.10 gram (1/10)</span>

6 0
3 years ago
What is the place value of the 3-digit in the number 11.321?
Karolina [17]

Answer:

30

Step-by-step explanation:

Since it is in the tens place. thank me please give me brainliest.

4 0
3 years ago
Read 2 more answers
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