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3 years ago

You can solve the following proportion by cross multiplying. What will the equation be after you cross multiply? 3/9 = x/15

Mathematics

2 answers:

tatuchka [14]3 years ago

6 0

Its D

3 * 15 = 9x Answer

aksik [14]3 years ago

4 0

3 x
---- = -----
9 15

so 9x = 45 (and x =5).

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Cost to store: $45 markup: 35% what would be the selling price?

ahrayia [7]

the answer is 60.75 you had to multiply then add

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3 years ago

5. 6a+b = 4 5a + 2b = 1

Eduardwww [97]

Answer:

X = 1

Y = -2

Step-by-step explanation:

Use simultaneous equations to work out.

4 0

3 years ago

Find the net change in the value of the function between the given inputs. h(t) = t2 + 2; from −5 to 8

pashok25 [27]

Answer:

Step-by-step explanation:

Given the function :

h(t) = t² + 2

From t = 5 to t = 8

when, t = 5

h(5) = 5² + 2

h(5) = 25 + 2

h(t) at t = 5 ; equals 27

when, t = 8

h(5) = 8² + 2

h(5) = 64 + 2

h(t) at t = 8 ; equals 66

Net Change :

h(8). - h(5)

66 - 27 = 39

3 0

3 years ago

Anser true or false:

kakasveta [241]

Answer:

true

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

12. Use a trigonometric ratio to find the measure of O in the triangle below. Give your answer to the nearest degree.

larisa [96]

Given :-

A right angled triangle with two sides 10cm and 9cm .

To Find :-

The value of theta .

Solution :-

At angle theta , 9cm side will be considered as the perpendicular and 10cm side will be hypotenuse . So , as we know that ;

$\longrightarrow sin\theta =\dfrac{perpendicular}{hypotenuse}$

Substituting the respective values,

$\longrightarrow sin\theta =\dfrac{9cm}{10cm}$

Simplify,

$\longrightarrow sin\theta= 0.9$

Take arcsin both sides ,

$\longrightarrow \theta =sin^{-1}(0.9)$

$\\\longrightarrow\underline{\underline{\theta = 64.15^o }}$

Hence the required answer is 64.15° . 

6 0

3 years ago