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Tems11 [23]
3 years ago
9

Help me need to know

Mathematics
1 answer:
crimeas [40]3 years ago
3 0

Answer:i am confused what is the question i will help tho

Step-by-step explanation:

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This is a sat practice. need help <br>​
nadya68 [22]

Answer:

The answer is A) -1 + 12i

Step-by-step explanation:

(7 + 3i) + (-8 + 9i)

(7 - 8) + (3 + 9)i

7 - 8 = - 1

3 + 9 = 12

- 1 + 12

4 0
2 years ago
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a gardener grows roses, tulips, and sunflowers in an 18-acre public garden. this year, she wants to plant twice as many acres of
kvv77 [185]
There would be 3 acres of tulips and 6 acres of sunflowers and finally 9 acres of roses. Hope this helped!!
3 0
3 years ago
How many solutions does 2(b+3)-17=3b-7+b<br><br><br><br> I really need help thanks!
Ymorist [56]

Answer:

One solution

Step-by-step explanation:

Group like terms: 2\left(b+3\right)-17=3b+b-7

\mathrm{Add\:similar\:elements}\:3b+b=4b: 2\left(b+3\right)-17=4b-7

Simplify: 2b-11=4b-7

Add 11 to both sides

Simplify: 2b=4b+4

Subtract 4b from both sides

Simplify: -2b=4

Divide

And finally, you get -2

Leave a brainliest if this helped!

8 0
2 years ago
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What are average percentage of all.​
zloy xaker [14]
The average perentage is 91.4%
3 0
3 years ago
A cylindrical syringe has a height of 6.8 cm and a diameter of 2.37 cm is going to be
alukav5142 [94]

Answer:

The number of syringe filled with water that would be needed to fill the semi-sphere is approximately 8.714 syringes

Step-by-step explanation:

The height of the syringe = 6.8 cm

The diameter of the syringe = 2.37 cm

The circumference of the hemisphere = 31.4 cm

Let r represent the radius of the hemisphere, we have;

2·π·r = 31.4 cm

r = 31.4/(2 × π) ≈ 4.9975 cm

The volume of the hemisphere = 2/3 × π × r³ = 2/3 × π × (31.4/(2 × π))³ ≈ 261.4 cm³

The volume of the syringe = π × d²/4 × h = π × 2.37²/4 × 6.8 ≈ 29.998 cm³

The number of syringe filled with water that would be needed to fill the semi-sphere = (The volume of the hemisphere)/(The volume of the syringe)

Therefore;

The number of syringe filled with water that would be needed to fill the semi-sphere = 261.4 cm³/(29.998 cm³) ≈ 8.714 syringes.

7 0
2 years ago
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