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den301095 [7]
3 years ago
14

Can someone please help me with this.

Mathematics
1 answer:
allsm [11]3 years ago
3 0

Answer:

10

Step-by-step explanation:

Given expression is |8-6 i|.

|8-6 i| is a complex expression.

The value of<em> i </em>is –1.

By definition of absolute value, |a+b i|=\sqrt{a^{2}+b^{2}}

Now, substitute |8-6 i| in the above formula.  

\Rightarrow|8-6 i|=\sqrt{8^{2}+(-6)^{2}}  (since <em>i </em>= –1)

                  =\sqrt{64+36}  (since 8^{2}=64 and                    –6^{2}=36)

                  =\sqrt{100}  (Square root of 100 is 10)

                  = 10

Hence, the value of the expression  |8-6 i| is 10.

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Bills family is driving across the country on vacation . They plan to stop at historical sites in each state they drive through.
maks197457 [2]

Answer: Blll's family has 70% of driving left.

Step-by-step explanation:

The total mileage of the trip = 3,000 miles.

miles driven so far = 900miles

Miles of diatance left = 3000- 900=2100

Percentage of driving left =  Miles of diatance left / Total miles to cover x 100

=2100/3000 x 100

= 7/10  x100

70%

4 0
3 years ago
Lusia hiked 7 miles of a 21 mile trail what percent of the trail did she hike
Trava [24]

Answer:

33.3 0r 1/3

Step-by-step explanation:

Common Sense 21 divided by 3 -_-

7 0
3 years ago
Solve the Application The television service offers hundreds of channels. Sam had 486 channels and ordered an additional 129. Af
Ratling [72]

Answer:

464

Step-by-step explanation:

Initial number of channels = 486

Additional channels = 129

Number of channels removed = 151

To obtain the number of channels he has now :

We Take the sum of the number of initial and additional channels, then we subtract the number of channels removed :

Number of channels he has now :

486 + 129 - 151 = 464

8 0
3 years ago
Solve for X (8th Grade Math)
svetlana [45]

Answer:

X=10

Step-by-step explanation:

180-116=64

4x+7x+6+64=180

11x+70=180

11x=110

x=10

3 0
3 years ago
HELP PLEASE I BEG
OverLord2011 [107]

Answer:

Juan invested $ 11,800 in Fund A and $ 7,200 in Fund B.

Step-by-step explanation:

Given that Juan invested $ 19000 in two mutual funds, and Fund A earned 7% profit during the first year, while Fund B earned 3% interest, if he received a total of $ 1042 profit, to determine how much she had invested in each mutual fund the following calculation must be performed:

19000 x 0.07 + 0 x 0.03 = 1330

15000 x 0.07 + 4000 x 0.03 = 1170

11000 x 0.07 + 8000 x 0.03 = 1010

11500 x 0.07 + 7500 x 0.03 = 1030

11800 x 0.07 + 7200 x 0.03 = 1042

Therefore, Juan invested $ 11,800 in Fund A and $ 7,200 in Fund B.

4 0
3 years ago
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