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wariber [46]
3 years ago
14

Find the conjugate of -2 + 3i.

Mathematics
1 answer:
Charra [1.4K]3 years ago
4 0

Answer:

- 2 - 3i

Step-by-step explanation:

given a complex number a + bi

then the conjugate is a - bi

The real part a remains unchanged while the sign of the imaginary part is reversed.

the conjugate of - 2 + 3i is - 2 - 3i


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A recipe for oatmeal cookies makes 24 cookies. The recipe calls for 2 1/2 cups of flour. Penny wants to make 3/4 of the recipe.
barxatty [35]

Answer:

Penny needs 1\frac{7}{8} cups of flour to make 3/4 of the recipe.

The recipe will make 18 cookies.

Step-by-step explanation:

We have been given that a recipe for oatmeal cookies makes 24 cookies. Penny wants to make 3/4 of the recipe.

To find the number of cookies that will 3/4 of the recipe will make, we need to find 3/4 of 24 as shown below:

\frac{3}{4}\text{ of recipe}=24\times \frac{3}{4}

\frac{3}{4}\text{ of recipe}=6\times \frac{3}{1}

\frac{3}{4}\text{ of recipe}=18

Therefore, the recipe will make 18 cookies.

We are also told that recipe calls for 2 1/2 cups of flour. To find amount of flour needed for 3/4 of the recipe, we will multiply 2 1/2 cups by 3/4 as:

\text{Cups of flour needed to make 3/4 of recipe}=2\frac{1}{2}\times \frac{3}{4}

\text{Cups of flour needed to make 3/4 of recipe}=\frac{5}{2}\times \frac{3}{4}

\text{Cups of flour needed to make 3/4 of recipe}=\frac{5\times 3}{2\times 4}

\text{Cups of flour needed to make 3/4 of recipe}=\frac{15}{8}

\text{Cups of flour needed to make 3/4 of recipe}=1\frac{7}{8}

Therefore, Penny needs 1\frac{7}{8} cups of flour to make 3/4 of the recipe.

7 0
3 years ago
Anyone know the answer to all of these
Sav [38]
13:
A- The scale factor is 16 (80/5)

14:
A- The scale factor is 6 (30/5)
B- The perimeter of the scale drawing is 14 feet (5x2) + (2x2)
C- The area of the scale drawing 10 ft. sq (base x height) (5 x 2)
D- The perimeter of the actual screen is 84 feet (30x2) + (12x2)
E- The area of the actual screen is 360 ft. sq (base x height) (30 x 12)


Hope this helped you out tons! :D
3 0
3 years ago
Tan-1 1/5+ tan-1 1/7 + tan-1 1/3 + tan-1 1/8 = π/4
Anestetic [448]

Answer:

true?

Step-by-step explanation:

what were you looking for exactly... but it is true

5 0
3 years ago
A square has an area of 225 m². What is the length of<br> the square’s diagonal?
Len [333]

Answer:

15

Step-by-step explanation:

15

8 0
3 years ago
Read 2 more answers
What is ......<br><br>(23×10)+(23×7)=​
babunello [35]

Answer:

391

Step-by-step explanation:

(23 x 10) + (23 x 7) =

230 + 161 =

391

Hope this helps! Please mark as brainliest.

5 0
4 years ago
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