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3 years ago

If you multiply an inequality by a negative number _____.

1 answer:

6 0

If you multiply or devide an inequality by a negative, the inequality sign will switch.

Ex. if an inequality with the sign >, is multiplied by a negative, the sign will switch to <.

I hope this answers your question.

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Use trigonometry to find the missing side. Round your answer to the nearest tenth (one decimal place)

Alchen [17]

Given:

A figure of a right triangle.

To find:

The missing side by using the trigonometric ratios.

Solution:

In a right angle triangle,

$\cos \theta=\dfrac{Adjacent}{Hypotenuse}$

In triangle ABC,

$\cos A=\dfrac{AC}{AB}$

$\cos (31^\circ)=\dfrac{b}{270}$

$0.857=\dfrac{b}{270}$

Multiply both sides by 270.

$0.857\times 270=b$

$231.39=b$

$b\approx 231.4$

Therefore, the missing side length is b=231.4 inches.

5 0

3 years ago

Ann thought of a number N, multiplied it by 5 and added 7. Then she told the result R to Jim. side note R=5n+7 using the previou

Neporo4naja [7]

Answer:

the answer is (R-7)÷5

Step-by-step explanation:

JNFZVZFN

5 0

3 years ago

Which of the following is the graph of y=sqr root -x-3

Elan Coil [88]

Answer:

The graph in the attached figure

see the explanation

Step-by-step explanation:

we have

$y=\sqrt{-x-3}$

we know that

The radicand must be greater than or equal to zero

$(-x-3)\geq 0$

solve for x

Adds 3 both sides

$-x\geq 0+3$

$-x\geq 3$

Multiply by -1 both sides

Remember that, when you multiply or divide both sides of an inequality by a negative number, you must reverse the inequality symbol

$x\leq -3$

The domain of the function is the interval (-∞,-3]

For x=-3 ---> the value of y=0

The range is the interval {0,∞)

therefore

The graph in the attached figure

3 0

3 years ago

If 2x squared + 8y = 121. 5, what is x

mezya [45]

X=30.4-2y
(step by step) :

5 0

3 years ago

(3r^-2s^3t^0)^-3/3rs How do I do this<br> .

sdas [7]

(3r^-2s^3t^0)^-3
~~~~~~~~~~~~~~ r (s)
3

=1/3 r^7 s
~~~~~~~~~
27s^9

= r^7
~~~~~~~
81s^8

Answer is =r^7/ 81s^8

8 0

3 years ago