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denis-greek [22]
10 months ago
9

PLEASE PLEASE PLEASE HELP +30 POINTS!

Mathematics
2 answers:
Dmitrij [34]10 months ago
7 0
It is b, d, c, and d

zavuch27 [327]10 months ago
6 0

Answer:

1.option b

2.option c

3.option non (-39/20)

4.option a

Step-by-step explanation:

1.

-7/9 x 3/5

\frac{ - 7}{9}  \times  \frac{3}{5}  \:  \\ (3 \: and \: 9 \: are \: common \: so \: we \: can \: simplify them) \\  \frac{ - 7}{3}  \times  \frac{1}{5}  \\  \frac{ - 7 \times 1}{3 \times 5}  =  \frac{ - 7}{15}

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Please help me. I’ll mark you as brainliest if correct
scZoUnD [109]

Answer:

b = -18

Step-by-step explanation:

(3 + 4i) (-3-2i)

When we foil:

-9 + -6i + -12i + -8i^2

-8i^2 = +8

Combine like terms:

-1 + -18i

7 0
3 years ago
How many meters are there in 21 feet?
hichkok12 [17]
There are <u><em>6.4008 </em></u><u><em /></u><em /><u><em>meters</em></u> in <u><em>21 feet</em></u>

If you need more help I will be glad to help:D
*~"AB84"~*
6 0
3 years ago
Read 2 more answers
4) You are downloading songs for your mp3 player. Six songs cost $5.94. You want to buy 4
jeka57 [31]

Answer:

4 songs: $3.96      8 songs: $7.92

Step-by-step explanation:

  • Divide to find out how much it costs for 1 song.

5.94 / 6 = 0.99      <u>Each song costs $0.99</u>

  • Now multiply $0.99 by (number of songs)

  • 0.99 x 4 = 3.96
  • 0.99 x 8 = 7.92
8 0
3 years ago
Please could ya help a girl
Illusion [34]

Answer:

A princess is stuck at the top of a tower that is 20 ft tall. To get down she shoots an arrow with rope attached into the ground and it lands 15 ft away from the tower. how long is the rope to safely guide her onto the ground.

Step-by-step explanation:

using the Pythagorean theory which is a squared plus b squared equals c squared you will see that 20 squared plus 15 squared will equal 625. Once you have that answer you find the square root of 625 which will give you your overall answer of 25.

3 0
3 years ago
Pls whoever answers this question correctly will get brainliest
Lisa [10]

1.

A ray starts out at a point and continues off to infinity.

Symbol of the ray with a beginning point in X and passes through point Y is:

\overrightarrow{XY}

Therefore your answer is \overrightarrow{JS}


2.

Symbol of a line passing through points A and B is:

\overleftrightarrow{AB}

Therefore your answer is \overleftrightarrow{KC}, \overleftrightarrow{DA}

8 0
3 years ago
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