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Find all solutions to the equation

7 sin^2x - 14 sin x + 2 = -5

Answers

Answer 1
Answer: 7 sin^2(x) - 14 sin(x) + 2 = -5
Temporarily substitute y in for sin(x) to make it more readable
7y^2 - 14y + 2 = -5
Move the -5 over by adding to both sides
7y^2 - 14y + 7 = 0
Simplicity by dividing both sides by 7 to get
y^2 - 2y + 1 = 0
Factor to get
(y-1)(y-1) = 0
Or y-1 = 0
y = 1
Therefore
Sin(x) = 1
x = pi/2 + 2pi * n where n represents all whole numbers
Final answer:
x = pi/2 + 2pi * n
Hope I helped :)

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What is the value of (–7 + 3i) + (2 – 6i)? a. –9 – 3i
b. –9 + 9i
c. –5 + 9i
d. –5 – 3i

Answers

Answer:

d

Step-by-step explanation:

(-7 + 3i) + (2-6i)

=-7 + 3i + 2 -6i

=(-7+2) + (3i -6i)

=-5 -3i

Answer:

(-7+3I)+(2-6I)

= -7+3i+2-6i

= -5-3I

so answer is d ie -5-3i

What is the sum of 18 23/30+ 2/3

Answers

Answer:

See image

Step-by-step explanation:

Im confused on how to label the thing as its not a perfect shape the question is basically in the photo

Answers

Answer:

Left function: f(x+3)

Right function: f(x)

Step-by-step explanation:

To translate a function, f(x-h) + k is used, where h is the horizontal and k is the vertical shift. Here, x+3 means the graph is shifted 3 units to the left, making it the left graph

The small rectangle was enlarged to create the big rectangle.A smaller rectangle has a length of 12 feet and width of 2 feet. A larger rectangle has a length of x feet and width of 5 feet.
Not drawn to scale

What is the missing measure on the big rectangle?
6 feet
10 feet
24 feet
30 feet

Answers

Answer: the missing measure on the big rectangle is 30 feet.

Step-by-step explanation:

If the small rectangle was enlarged to create the big rectangle, it means that they are similar. This also means that the dimensions of the larger rectangle different form the dimensions of the smaller rectangle by a constant ratio or factor.

The smaller rectangle has a length of 12 feet and width of 2 feet. The larger rectangle has a length of x feet and width of 5 feet. This means that

x/12 = 5/2

Cross multiplying, it becomes

2x = 12 × 5 = 60

x = 60/2 = 30

Answer:

d 30

Step-by-step explanation:

ed 2020

Sofia’s mother sent her to the grocery store with $10. If the sales tax rate that will apply at the time of her purchase is 6%, will Sofia have enough money to purchase the items on her list? 1 gallon of milk, $3.66 1 pound of bananas, $0.72 1 head of lettuce, $1.77 1 pound of tomatoes, $2.17 A. No, the total of her purchase after sales tax is $13.81. B. No, the total of her purchase after sales tax is $13.31. C. Yes, the total of her purchase after sales tax is $8.82. D. Yes, the total of her purchase after sales tax is $8.32.

Answers

Answer:

c

Step-by-step explanation:

3.66+.72+1.77+2.17=8.32×6%=8.8192 =8.82

Answer:

C Yes, the total of her purchase after sales tax is $8.82.

Step-by-step explanation:

3.66+0.72+1.77+2.17= $8.32

8.32*.06 =0.4992

0.4992+8.32= $8.82

Hope this helps!

PLS NEED HELP ASAP RLLY APPRECIATE IT

Answers

Answer:

all i know is 8 and 9 might be correspondong angles

Step-by-step explanation:

i wish i wasn't going brain dead
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