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3 years ago

8

Choose the missing step in the given solution to the inequality ?x ? 3 < 13 + 3x. (1 point) ?x ? 3 < 13 + 3x _____________

__ ?4x < 16 x > ?4

1 answer:

SSSSS [86.1K]3 years ago

7 0

Answer:

Step-by-step explanation:

4x=542

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What it means by that

denpristay [2]

Example A means

For every #of felt pieces you multiply that by the cost of one piece of felt to see how much you spent

Example
Felts cost $3 a piece
You get 7 pieces

7 x 3= 21

You spent $21 on felt

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3 years ago

Which of the values for x and y make the equation 2x + 3y + 4 = 15 true?

hjlf

X=1, y=3 because 2x1 is 2 and 3x3 is 9, 2 plus 9 equals 11 and 11 plus 4 equals 15

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3 years ago

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kifflom [539]

Im pretty sure the answer is C.

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2 years ago

Special triangles 2 back

AleksAgata [21]

Answer:

Step-by-step explanation:

10. From the given figure,

$\frac{18}{y}=sin60^{0}$

$y=\frac{36}{\sqrt{3}}$

11. From the given figure,

$\frac{12}{y}=sin60^{0}$

$y=\frac{12{\times}2}{\sqrt{3}}=\frac{24}{\sqrt{3}}$

and $\frac{x}{y}=cos60^{0}$

$x=\frac{24}{\sqrt{3}{\times}2}=\frac{12}{\sqrt{3}}$

12. The sides of an equilateral triangle has length=10 inches, therefore AB=BC=AC=10

Also, AD is the height of the given triangle,then BD=DC=5

From triangle ADC,

$(AC)^{2}=(AD)^{2}+(DC)^{2}$

$100=(AD)^{2}+25$

$75=(AD)^{2}$

$AD=\sqrt{75}inches$

Hence, height of the triangle is $\sqrt{75}inches$

13. Height of the ramp from the ground is 8ft.

therefore, let BC=x

$\frac{8}{BC}=tan30^{0}$

$\frac{8}{x}=\frac{1}{\sqrt{3}}$

$x=8\sqrt{3}$

14. Let BC=x and AB=y

then, $\frac{x}{18}=cos30^{0}$

$x=18{\times}\frac{\sqrt{3}}{2}=9\sqrt{3}$

and $\frac{y}{x}=tan30^{0}$

$y=9$

The perimeter of triangle is=Sum of all the sides=AB+BC+AC= $9\sqrt{3}+9+18= 9\sqrt{3}+27=9(1.73)+27=42.57 inches$

15. Let AB be the height of the tree, then

$\frac{AB}{8}=tan30^{0}$

$AB=8{\times}\frac{1}{\sqrt{3}}=\frac{8}{1.73}=4.62m$

16. According to question,

$\frac{h}{24}=sin30^{0}$

$h=\frac{24}{2}=12ft$

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2 years ago

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Solve the linear question

Pavlova-9 [17]

$m + 4 = -7 + 2m$

Subtract m from both sides.
$4 = -7 + m$

Add 7 to both sides.
$11 = m$

Therefore, m = 11.

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3 years ago