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coldgirl [10]
3 years ago
7

PLSSS HELPP ASAP

Mathematics
1 answer:
dezoksy [38]3 years ago
7 0

Answer:

choose B is the greatest variablity

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Write (-2 − 2i) + (10 − 4i) as a complex number in standard form.
romanna [79]

Answer:

8-6i

Step-by-step explanation:

complex number in standard form will be in the form of a+bi

(-2 − 2i) + (10 − 4i) , open parenthesis

-2- 2i +10 -4i, group like terms

-2+10 -2i -4i, combine like terms

8 - 6i

7 0
2 years ago
A triangle has sides with lengths of 3 yards, 4 yards, and 5 yards. Is it a right triangle?
yulyashka [42]

Answer:

It is a right triangle

Step-by-step explanation:

Depending on how you make the triangle if 3 is A 4 is B and 5 is C then the Pythagorean Theorm would be correct and it would be a right triangle.

7 0
2 years ago
Read 2 more answers
A recent poll taken by the national ice cream industry shows that 32% of the population names vanilla as its favorite ice cream
lina2011 [118]

Answer:

±0.06

Step-by-step explanation:

The range is 0.28 - 0.16 = 0.12.  So half of that is 0.06.

3 0
2 years ago
A 40% sugar solution is added to an 85% sugar solution to create 1800 mL of a 60% solution. How much of each solution is used? (
denis-greek [22]

Answer:

Number of ml of 40% sugar = x = 1000mL

Number of ml of 85% sugar used = y = 800mL

Step-by-step explanation:

Let the

Number of ml of 40% sugar = x

Number of ml of 85% sugar used = y

From the above question, our system of equations is given as:

x + y = 1800mL ....... Equation 1

x = 1800 - y

40% × x + 85% × y = 60% × 1800mL

0.4x + 0.85y = 1080.... Equation 2

We substitute 1800 - y for x in Equation 2

0.4(1800 - y) + 0.85y = 1080

720 - 0.4y + 0.85y = 1080

- 0.4y + 0.85y = 1080 - 720

0.45y = 360

y = 360/0.45

y = 800mL

Solving for x

x = 1800 - y

x = 1800 - 800

x = 1000mL

Therefore,

Number of ml of 40% sugar = x = 1000mL

Number of ml of 85% sugar used = y = 800mL

4 0
2 years ago
Find the value of 3x + 2 when 7 + x = 5
Stells [14]
Work out the second equation first.
7 + x= 5
-7      -7
   x = -2
Plug in x.
3(-2)+2=?
  -6+2=4
6 0
3 years ago
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