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Delvig [45]
3 years ago
15

Evaluate l-a^2l, given a = 5, b = -3, and c= -2.

Mathematics
2 answers:
mash [69]3 years ago
6 0
THE ANSWER ISSS
25 WHICH IS C
dimulka [17.4K]3 years ago
3 0
I’m sorry bro I wish I knew
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The number 16 has four fourth roots. In other words, there are four complex numbers that can be entered in the square in the equ
Tems11 [23]

Answer:

Step-by-step explanation:

Hello, we know that the z complex solutions of

z^4=1

are

1, i, -1, -i

so, the solutions of z^4=16=2^4 are

2, 2i, -2, -2i

Thank you

3 0
3 years ago
sam can prepare 20 wall paintings in four weeks how much time will he need to prepare 80 wall paintings
FinnZ [79.3K]

Answer:16 weeks

Step-by-step explanation:Since we know Sam can make 20 paintings in 4 weeks we must add the weeks

8 weeks will be 40 paintings

12 weeks will be 60 paintings

16 weeks will be 80 paintings

Hence the answer is 16 weeks to create 80 paintings

6 0
4 years ago
Read 2 more answers
A car travels at an average speed of 40 miles per hour for the first 100 miles of a 200-mile trip, and at an average speed of 50
Harlamova29_29 [7]
Total distance = 200 miles

Time needed for the first 100 miles
= 100 ÷ 40 = 2.5 hours

Time needed for the second 100 miles
= 100 ÷ 50 = 2 hours

Total time = 2.5 + 2 = 4.5 hours

Average speed = 200 ÷ 4.5 hours = 44.4 miles per hour
3 0
3 years ago
What is the area of this parallelogram? A 10.35 cm2 B 12.5 cm2 C 20.25 cm2 D 30.6 cm2​
sveta [45]
The answer would be D.
6 0
3 years ago
Read 2 more answers
Given right triangle QRS, what is the value of sin(30°)? StartFraction StartRoot 3 EndRoot Over 3 EndFraction One-half StartFrac
baherus [9]

Answer:

Option 2: \sin(30)=\frac{1}{2}

Step-by-step explanation:

Given:

From the triangle shown below;

A triangle QRS with angle QRS = 90°, ∠QSR = 30°.

Side QR = 5, SQ = 10 and RS = 5√3

Now, we know from trigonometric ratio that,

\sin (A) = \frac{Opposite\ side}{Hypotenuse}

Here, opposite side of angle QSR is QR and Hypotenuse is the side opposite angle QRS which is SQ. Therefore,

\sin(\angle QSR)=\dfrac{QR}{SQ}\\\\\\\sin(30)=\dfrac{5}{10}\\\\\\\sin(30)=\dfrac{5}{2\times 5}=\dfrac{1}{2}

Therefore, the value of sine of 30° is one-half. So, second option is correct.

6 0
3 years ago
Read 2 more answers
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