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3 years ago

X + 15 = 28 O A. x= 13 O B. x = 33 O C. x = 43 O D. x = 23

Mathematics

2 answers:

Mariana [72]3 years ago

7 0

Answer:

Step-by-step explanation:

the answer is

x+15=28

x=28-15

x= 13

Alex Ar [27]3 years ago

6 0

Answer:

Step-by-step explanation:

x+15=28

move 15 to the other side

and change the + to -

x=28-15

x=13

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Is (4,10) a solution to this system of equations? y=2x+2 y=10x+1

vladimir1956 [14]

Answer:

Step-by-step explanation:

To find out if (4,10) is a solution to the system, we plug in the values of x and y into each equation.

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2 years ago

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3 years ago

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3 years ago

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Hatshy [7]

Answer:

1. 29.67°

2. 68.96°

3. 89.85°

Step-by-step explanation:

1. Reference angle = x

Opposite = 45 cm

Adjacent = 79 cm

Therefore:

$tan(x) = \frac{45}{79}$

$tan(x) = 0.569620253$

$x = tan^{-1}(0.569620253)$

$x = 29.67$ (nearest hundredth)

2. Reference angle = B

Opposite = 14

Hypotenuse = 15

Therefore:

$sin(B) = \frac{14}{15}$

$sin(B) = 0.93333$

$B = sin^{-1}(0.93333)$

$B = 68.96$ (nearest hundredth)

3. Reference angle = x

Adjacent = 238,900 mi

Hypotenuse = 92,955,807 mi

Therefore:

$cos(x) = \frac{238,900}{92,955,807}$

$x = cos^{-1}(\frac{238,900}{92,955,807})$

$x = 89.85$ (nearest hundredth)

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3 years ago