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2 years ago

PLZZ HELP ME..WILL GIVE BRAINLIEST..THANKYOU SO MUCH!!!!

Mathematics

1 answer:

LuckyWell [14K]2 years ago

6 0

Answer:

x = 9

Step-by-step explanation:

I hope it helps you

I wrote how I did it tooo

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Barry buys a package of pasta

bulgar [2K]

Answer:

Pasta: $2.39

Jar of tomato sauce: $3.09

Coupons(-): $0.75+$0.50

Total cost: $4.23

Step-by-step explanation:

The total cost of Barry's purchase is the addition of the cost of purchase of pasta and a jar of tomato sauce, and the value of coupons is reduced from the answer. It would be the final answer.

4 0

2 years ago

In order to safely land, the angle that a plane approaches the runway should be no more than 15°. A plane is approaching Ottawa

belka [17]

9514 1404 393

Answer:

9.5°, yes

Step-by-step explanation:

The relevant trig relation is ...

Tan = Opposite/Adjacent

The distance opposite the angle of elevation is the plane's height, 500 m. The distance adjacent to the angle of elevation is the horizontal distance to the plane, 3 km = 3000 m. Then the angle is found from ...

tan(α) = 500/3000 = 1/6

α = arctan(1/6) ≈ 9.46°

The plane is approaching at an angle of 9.46°. It is safe to land, since that angle is less than 15°.

_____

<em>Additional comment</em>

The usual descent angle for most commercial air traffic is 3°. Some airport geography demands it be different (steeper). A higher descent angle can put undue stress on the landing gear.

5 0

3 years ago

Help, with solving rational equations! I am no good at it :( Solve for x: 2 over 5 plus 3 over 5 x equals quantity x plus 5 over

mamaluj [8]

If this is your equation: $\frac{2}{5} + \frac{3}{5x} = \frac{x+5}{10}$
Solution:
LCD for 5 and 5x is 5x
$\frac{x}{x} ( \frac{2}{5} )+ \frac{3}{5x} = \frac{x+5}{10}$
$\frac{2x}{5x} + \frac{3}{5x} = \frac{x+5}{10}$
$\frac{2x+3}{5x} = \frac{x+5}{10}$
$10(2x+3)=5x(x+5)$ ←cross product
20x + 30 = 5x² + 25x ←simplify with distributive property
0 = 5x² + 5x - 30 ←use inverse operations to collect all terms on one side
0 = x² + x - 6 ←if possible divide by numerical GCF (This case 5)
0 = (x + 3)(x - 2) ←Factor
x = -3 or x = 2
Please check by substitution in original equation... Both work

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3 years ago

I need to know what the answer to this because I’m failing

Dafna1 [17]

Answer:

Step-by-step explanation: 12:3=4, 4 x 2= 8

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3 years ago

If a baker doubles a recipe that calls for 6-2/3 cups of flour , how many cups of flour will be needed in all ?

Assoli18 [71]

13 1/3 cups needed in all

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3 years ago

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