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ella [17]
3 years ago
8

FOR MY TEST!!! ASAP HELP!!!! WILL MARK THE BRAINLIST WHOEVER GETS IT RIGHT!!!!

Mathematics
2 answers:
scoundrel [369]3 years ago
7 0

The answer is attached.

svp [43]3 years ago
6 0

Answer:

the 2 images are the solutions to the questions

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Stephanie has the same number of dimes and nickels. She has $6.10 in all. Write an equation that you could use to find the numbe
Igoryamba

Answer:

The equation is

15x = 610

Step-by-step explanation:

A dime is 10 cents while a nickel is 5 cents

$6.10 is same as 610 cents

Let the number of dimes and number of nickels be x

10x + 5x = 610

15x = 610

5 0
2 years ago
Colin gets £xx wages each week. After he pays his tax of £tt, he then pays his rent of £250. He shares what's left between himse
Levart [38]

9514 1404 393

Answer:

  (x -t -250)/2

Step-by-step explanation:

The amount left from x after paying t and 250 is ...

  x -t -250

If this is split into two equal parts, each share is ...

  share = (x -t -250)/2

5 0
2 years ago
Please someone help me to prove this. ​
morpeh [17]

Answer:  see proof below

<u>Step-by-step explanation:</u>

Use the Double Angle Identity: sin 2Ф = 2sinФ · cosФ

Use the Sum/Difference Identities:

sin(α + β) = sinα · cosβ + cosα · sinβ

cos(α - β) = cosα · cosβ + sinα · sinβ

Use the Unit circle to evaluate: sin45 = cos45 = √2/2

Use the Double Angle Identities:   sin2Ф = 2sinФ · cosФ

Use the Pythagorean Identity: cos²Ф + sin²Ф = 1

<u />

<u>Proof LHS → RHS</u>

LHS:                                  2sin(45 + 2A) · cos(45 - 2A)

Sum/Difference: 2 (sin45·cos2A + cos45·sin2A) (cos45·cos2A + sin45·sin2A)

Unit Circle:    2[(√2/2)cos2A + (√2/2)sin2A][(√2/2)cos2A +(√2/2)·sin2A)]  

Expand:        2[(1/2)cos²2A  + cos2A·sin2A + (1/2)sin²2A]

Distribute:              cos²2A   + 2cos2A·sin2A + sin²2A  

Pythagorean Identity:    1 + 2cos2A·sin2A

Double Angle:                1 + sin4A

LHS = RHS:  1 + sin4A = 1 + sin4A   \checkmark

6 0
2 years ago
4x+1 ,3x find the value of x
In-s [12.5K]
I'm assuming that you meant 4x+1=3x?

Subtracting 4x, we get 1=-x.  Multiplying by -1, we get x=-1 as the solution.
6 0
3 years ago
Read 2 more answers
Petrol and oil are mixed in the ratio 10/1 . How many litres of oil needed to mix with 5 litres of petrol?
valina [46]

Answer:

1/2

Step-by-step explanation:

since 10petrols=1 oil

therefore 5petrols=1/2

7 0
2 years ago
Read 2 more answers
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