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Blizzard [7]
3 years ago
10

DONT KEEP SCROLLING PLEASE Please I don’t understand 50 POINTS BRAINLIEST

Mathematics
1 answer:
Yanka [14]3 years ago
5 0

Answer:why didn’t you want me to scroll down ?  Can you answer my question


Step-by-step explanation:


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Complete the identity
spin [16.1K]

Answer: cos(\pi-x)=-cos(x)

Step-by-step explanation:

We need to apply the following identity:

cos(A - B) = cos A*cos B + sinA*sin B

Then, applying this, you know that for cos(\pi-x):

cos(\pi-x)=cos(\pi)*cos(x)+sin(\pi)*sin(x)

We need to remember that:

cos(\pi)=-1 and sin(\pi)=0

Therefore, we need to substitute these values into cos(\pi-x)=cos(\pi)*cos(x)+sin(\pi)*sin(x).

Then, you get:

cos(\pi-x)=(-1)*cos(x)+0*sin(x)

cos(\pi-x)=-1cos(x)+0

cos(\pi-x)=-cos(x)

8 0
3 years ago
Out of a salary of $4500, I kept 1/3 as savings. Out of the remaining money, I spend 50% on food and 20% on house rent. How much
jeka94

Answer:

$2100

Step-by-step explanation:

1/3 of 4500 is 1500

to find 1/3 of a number is to multiply by 1/3

1/3 * 4500 = 1500

$1500 is for savings

subtract 1500 from 4500

4500 - 1500 = 3000

the remaining money is $3000

to find 50% of something, divide by 2

3000/2 = 1500

$1500 is spent on food.

20% of 3000 is 600

to find 20% of something, multiply the decimal value (0.2)

0.2 * 3000 = 600

$600 are spent on rent.

$450 leftover

1500 + 600 = 2100

Food and rent cost $2100

hope this helps:)

3 0
1 year ago
What is the value of X? Pls help!
Licemer1 [7]

Answer:

42

Step-by-step explanation:

Since the scale factor is 2:7, you can divide the given number by 2 then multiply it by 7, so 12/2x7=42

6 0
2 years ago
A dartboard has 8 equally sized slices numbered from 1 to 8. Some are grey and some are white, as shown below.
Anna [14]

✨Answer:

✨:P (X) is 7/10P(not X) is 3/10 The total is 10 so that's ur denominator The probability of landing on a grey area is 7/10✨

Step-by-step explanation:✨

✨~hope this helps~✨

✨GOD LOVES YOU✨

8 0
2 years ago
3(2x - 1) = 1/2 (4x - 2) + 2<br> What would it be?
Novay_Z [31]

Answer:

X =  1

Step-by-step explanation:

Just distribute properly, and distribute the fraction multiplying the numerator by 4 and 2

6 0
2 years ago
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