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3 years ago

Solve for x, given the equation Square root of x plus 9 − 4 = 1.

2 answers:

4 0

$\sqrt{x+9}-4=1 \\ \sqrt{x+9}=5
$
x + 9 = 25
x = 25 - 9
x = 16
x + 9 ≥ 0
x ≥ - 9
Answer:
A ) x = 16, solution is not extraneous.

djverab [1.8K]3 years ago

4 0

Answer:

the answer is a

Step-by-step explanation:

x = 16, not extraneous

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A dinner order at a restaurant consists of a salad with dressing, an entrée, and three sides. The menu offers a salad with your

Gemiola [76]

Answer:

1008 possible dinner orders

Step-by-step explanation:

There are 3 possible salads, 4 possible entrees, and 9 possible sides.

Each dinner has 1 salad, 1 entree, and 3 sides.

Using combinations,

C(3,1) * C(4,1) * C(9,3) = 3 * 4 * 84 = 1008

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4 years ago

Read 2 more answers

Please someone explain where does 2/3x and 1/6 come from

Iteru [2.4K]

4x + 1 = 6y

4x/6 + 1/6 = 6y/6

2x/3 + 1/6 = y.

4/6 is the same as 2/3 in lowest terms.

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4 years ago

If Kelly spins the spinner 120 times, how many times would you predict the spinner lands on pink based on the experimental data?

Stella [2.4K]

Answer:

Step-by-step explanation:

120 divided by 6 = 20

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3 years ago

Which statements are true? (look at picture)

Makovka662 [10]

Answer:

D is true, E is true, F is true

Step-by-step explanation:

Hello,

n is an odd number it means that n = 2a+1 where a is integer

$n^2-1=(2a+1)^2-1=4a^2+4a+1-1=4a(a+1)$

this is not an odd number

$n(n-1)=(2a+1)2a$

this is not an odd number

$(n-1)^2=(2a+1-1)^2=4a^2$

this is not an odd number

$n^2+2=(2a+1)^2+2=4a^2+4a+1+2=4a^2+4a+3= 2(2a^2+2a+1)+1$

so this is an odd number

$n(n-2)=(2a+1)(2a-1)=4a^2-1=4a^2-2+1=2(2a^2-1)+1$

so this is an odd number

$(n-2)^2=(2a+1-2)^2=(2a-1)^2=4a^2-4a+1 = 2(2a^2-2a)+1$

this is an odd number

hope this helps

7 0

3 years ago

Write the equation to the line parallel to y= 3x – 5 that goes through the point (-2, -7) using any form.

MakcuM [25]

Answer:

y = 3x - 1

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = 3x - 5 ← is in slope- intercept form

with slope m = 3

Parallel lines have equal slopes , then

y = 3x + c ← is the partial equation

To find c substitute (- 2, - 7 ) into the partial equation

- 7 = - 6 + c ⇒ c = - 7 + 6 = - 1

y = 3x - 1 ← equation of parallel line

8 0

2 years ago