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atroni [7]
3 years ago
5

PLEASE HELP ME ITS DUE REALLY SOON PLZZZZ

Mathematics
1 answer:
Yuliya22 [10]3 years ago
4 0

Answer:

1) 5x + 4x²(2x + 7) - 6x² - 9x

= 5x + 8x³ + 28x² - 6x² - 9x

= 8x³ + 22x² - 4x

2) the answer is 2x³ + 17x² + 25x - 50

3) the answer is y = 4x² + 14x + 18

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What is the value of x that makes PQ←→||RS←→?
Inessa05 [86]

Answer:

x = 55

Step-by-step explanation:

For PQ and RS to be parallel then

∠ACQ = ∠RDB ( Alternate exterior angles ), thus

3x - 65 = 2x - 10 ( subtract 2x from both sides )

x - 65 = - 10 ( add 65 to both sides )

x = 55

3 0
3 years ago
You spent $145 purchasing 3 student tickets and 7 adult tickets. Adult tickets cost $5 more than a student ticket. Find the cost
vova2212 [387]

Answer:

$11 and $16

Step-by-step explanation:

let x be the cost of a student ticket then an adult ticket is x + 5 , then

3x + 7(x + 5) = 145 , that is

3x + 7x + 35 = 145

10x + 35 = 145 ( subtract 35 from both sides )

10x = 110 ( divide both sides by 10 )

x = 11

Student ticket costs $11 and adult ticket = x + 5 = 11 + 5 = $16

3 0
2 years ago
5 × 4) × (16 ÷ 8) × (24 − 22) =
saw5 [17]

Answer:

80

Step-by-step explanation:

(5 * 4) = 20

(16 / 8) = 2

(24 - 22) = 2

20 * 2 * 2 = 80

7 0
3 years ago
Read 2 more answers
if the kinetic energy of an aeroplane moving at a velocity of 100m/s is 200j ,what is the mass of the aeroplane
Black_prince [1.1K]

Answer:

<u>0.04kg</u>

Step-by-step explanation:

Kinetic energy Formula: eK=0.5×m×v²

to work out mass

we can rearrange the formula and make it:

~m=eK÷(0.5×v²)

now insert the missing digits into the formula:

m=200÷(0.5×100²)

work it out, and you get your answer

m=0.04kg

Hopefully this helped-have a good day)

8 0
2 years ago
13/18 ​% of a quantity is equal to what fraction of the​ quantity?
Leto [7]

Answer:

2/15/76

Step-by-step explanation:

I don't want to disappoint you but that's my answer thank me later and good luck

5 0
2 years ago
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