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2 years ago

Determine whether the ratios are equivalent.

1 answer:

8 0

5 x 4 = 20
7 x 4 = 28

5:7 = 20:28

When you multiply both by 4, they equal the outcome on their side of the function, making them equivalent

(Sorry if function isn't the right word)

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Solve the equation: sin(2x)= sin x

Anna [14]

Answer:

Below

Step-by-step explanation:

sin(2x) = 2 ×cos(x)× sin(x)

● sin(x) = 2 × cos(x) × sin(x)

● 2 × cos(x) = 1

● cos (x) = 1/2

So we can deduce that:

● x = Pi/3 + 2*k*Pi

● or x = -Pi/3 + 2*k*Pi

K is an integer

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2 years ago

If p percent = 30 percent ,CP =RS1000, SP =? profit amount =?

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2 years ago

X/15+1/5<2/5 solve for x. Show all work.

Nitella [24]

X=3 is the answer I think

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3 years ago

Read 2 more answers

4 - 3x > 13 (Solve for x)

Fudgin [204]

Answer:

X < -3

Step-by-step explanation:

4 - 3x > 13

First move the 4 over, subtract from both sides:

-4 + 4 - 3x > 13 - 4

-3x > 9

Now move the -3 over, divide on both sides.

When you multiply or divide by a negative, you have to reverse the sign.

-3x/-3 < 9/-3

X < -3

4 0

3 years ago

Read 2 more answers

Harry went to the bakery with $50 to buy cupcakes and fruit tarts. One cupcake costs $3.50 and one fruit tart costs $3. Harry bo

mote1985 [20]

Answer:

$28+3x\leq 50$

Step-by-step explanation:

We are given the following in the question:

Cost of one cupcake = $3.50

Cost of one fruit tart = $3

Total money Harry have = $50

Harry bought 8 cupcakes and $x$ fruit tarts.

We have to write the inequality giving relation between the total number of cupcakes and fruit tarts Harry can buy the amount of money he has.

Total cost of purchase =

= Total cost of cupcakes + Total cost of fruit tarts

$=(8\times 3.50) + (x \times 3)\\=28 + 3x$

Now, this total cost of Harry's purchase should be less than than equal to $50.

$28+3x\leq 50$

is the required linear inequality.

4 0

2 years ago