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krok68 [10]
3 years ago
8

Select all the statements that correctly describe the solutions to this system of equations?

Mathematics
1 answer:
Luba_88 [7]3 years ago
5 0

x + y = 9

x = 9 - y

2x - y = 0

2(9 - y) - y = 0

18 - 2y - y = 0

-3y = -18

y = 6

x = 9 - y

x = 9 - 6

x = 3

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Billie Holiday sells children's clothing for Sara Vaughn's Toddler Shop. Baby blankets sell for $29.99 after a markup rate based
Mariulka [41]

Answer:

Cost: $14.349

Markup: $15.649

Step-by-step explanation:

1. Rewrite the percent as decimal. Divide it by 100, as following:

 109/100=1.09

3. Now, knowing that Baby blankets sell for $29.99 after a markup rate based on cost of 109%, you can write the following expresion:

x+1.09x=29.99

Where x is the cost.

 4. You must solve for x, then, you obtain:

2.09x=29.99\\x=\frac{29.99}{2.09}\\x=14.349

5. The markup is:

M=29.99-14.349=15.649

6 0
3 years ago
Read 2 more answers
Find the exact value of T Image below
Elanso [62]

Answer:

a) 1/800 or 0.00125

b) i) 0.0013

ii) 0.001

c) 60%

Step-by-step explanation:

T = [tan(2×30)+1][2cos(30)-1] ÷ (y²-x²)

T = (tan60 + 1)(2cos30 - 1) ÷ (41² - 9²)

T = (sqrt(3) + 1)(sqrt(3) - 1) ÷ 1600

T = (3-1)/1600

T = 2/1600

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4 0
3 years ago
MULTIPLE CHOICE PLEASE HELP
bekas [8.4K]

Answer:

C

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 = \frac{1}{3} x + 5 ← is in slope- intercept form

with slope m = \frac{1}{3}

• Parallel lines have equal slopes, hence

y = \frac{1}{3} x + c ← is the partial equation of the parallel line

To find c substitute (- 6, 0) into the partial equation

0 = - 2 + c ⇒ c = 0 + 2 = 2

y = \frac{1}{3} x + 2 → C

4 0
3 years ago
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Assoli18 [71]

Answer:

Not Independent

Step-by-step explanation: Because the red ballsdon't have to worry because they have a larger number

7 0
3 years ago
Rewrite <br> 4x-8y=16 in slope intercept form.
strojnjashka [21]
-8y = -4x + 16
Y = 4/8x - 2
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