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USPshnik [31]
3 years ago
8

5-2i-2(3+i) can you help me with this answer

Mathematics
1 answer:
weeeeeb [17]3 years ago
8 0

Answer:

-1 - 4 i

Step-by-step explanation:

5 - (2 * i) - (2 * (3 + i)) =

-1 - 4 i

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How do you find 5% of 100 on a calculator?
UkoKoshka [18]
Enter 5, then °/•, next the X, then 100, and finally = and you should get 5. OR you can turn 5°/• into decimal form of .05 and then press X , 100, and finally =. The answer is 5 either way.
7 0
3 years ago
Allison’s cupcake and cookie budget for her party is $105. She would like to have at least 40 cupcakes and cookies combined, and
FinnZ [79.3K]

Answer:

a + b ≥ 40

a + 5 ≤ b

2.50a + 1.50b ≤ 105

Step-by-step explanation:

We are told she would like to have at least 40 cupcakes and cookies combined.

If a is number of cupcakes and b is number of cookies, then this inequality is;

a + b ≥ 40

Secondly, we are told she would like to have at most 5 more cupcakes than cookies.

Thus, the inequality is;

a + 5 ≤ b

Lastly, we are told that cupcakes sell for $2.50 and cookies for $1.50

Thus, the inequality is;

2.50a + 1.50b ≤ 105

Finally, the 3 inequalities are;

a + b ≥ 40

a + 5 ≤ b

2.50a + 1.50b ≤ 105

4 0
3 years ago
I don't understand how to answer this​
IgorLugansk [536]

Answer:

\large\boxe{D)\ \dfrac{1}{2}\pi\ feet}

Step-by-step explanation:

Step 1:

Calculate the circumference of both circles.

The formula of a circumference:of a circle with radius r:

C=2\pi r

The circle R:

C_R=2\pi\left(\dfrac{2}{3}\right)=\dfrac{4\pi}{3}\ ft

The circle S:

C_S=2\pi\left(\dfrac{3}{4}\right)=\dfrac{3\pi}{2}\ ft

The length of the intercepted arc for circle R is

l=\dfrac{4\pi}{9}\ ft

Step 2:

Calculate what the part of the circumference of the circle R is the intercepted arc:

\dfrac{4\pi}{9}:\dfrac{4\pi}{3}=\dfrac{4\pi}{9}\cdot\dfrac{3}{4\pi}=\dfrac{1}{3}

The same length of the circumference of the circle S is searched for the length of the intercepted arc for circle S.

Step 3:

Calculate the length of the intercepted arc for circle S:

\dfrac{1}{3}\cdot\dfrac{3\pi}{2}=\dfrac{1}{2}\pi\ ft

4 0
3 years ago
A grocery store sells peanuts in bulk foods. The price for 5 lb of peanuts is $8.00. Brian said, “The ratio of dollars to pounds
Yanka [14]
Carla is correct using a calculator to check 
7 0
3 years ago
Write an absolute value equation to satisfy the given solution set shown on a number line.
aivan3 [116]

Answer: IX - 4I ≤ 4

Step-by-step explanation:

In the numer line we can see that our possible values of x are in the range:

0 ≤ x ≤ 8

And we want to find an absolute value equation such that this set is the set of possible solutions.

An example can be:

IX - 4I ≤ 4

To construct this, we first find the midpoint M of our set, in this case is 4.

Then we write:

Ix - MI  ≤ IMI

Notice that i am using the minor and equal sign, this is because the black dots means that the values x = 0 and x = 8 are included, if the dots were empty dots, it would be an open set and we should use the <  > signs.

8 0
4 years ago
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