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german
2 years ago
11

SOMEONE PLEASE HELP I WILL MARK U BRAINLIST

Mathematics
1 answer:
mash [69]2 years ago
7 0

Answer:

x = 3

Step-by-step explanation:

In\: \triangle PQT,\: \overline{PQ}|| \overline {RS}...(Given)\\\\\implies\frac{PS}{ST}=\frac{QR}{RT}\\(By\: Proportionality\: Theorem) \\ \\\implies\frac{2x+4}{5}=\frac{3x+5}{7}\\\\ \implies \: 7(2x + 4) = 5(3x + 5) \\  \\ \implies \:14x + 28 = 15x + 25 \\  \\ 14x - 15x = 25 - 28 \\ \\ - x =  - 3 \\  \\ x = 3

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He paid 8% sales tax.
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Stacie had a meal that cost $36.00. If she tipped the waited 18% of the total bill for the service, How much was the tip?
Dovator [93]

18% = 0.18

Tip = $36.00 x 0.18 = $6.48

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Answer:

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3 years ago
How is the distributive property used to expand expressions? provide an example
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The resting heart rate of an adult is usually about 60 beats per minute. Use your completed table to find approximately how many
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4 0
3 years ago
Suppose a flare is shot from the top of a 120 foot building at a speed of 160 feet per second. The equation h = ?16t + 160t + 12
insens350 [35]

Answer:

The time taken for the flare to hit the ground is approximately 10.7 seconds.

Step-by-step explanation:

Given : Suppose a flare is shot from the top of a 120 foot building at a speed of 160 feet per second. The equation h =- 16t^2+ 160t + 120 models the h height at t seconds of the flare.

To find : How long will it take for the flare to hit the ground?

Solution :

The equation  h =- 16t^2+ 160t + 120 models the h height at t seconds of the flare.

The flare to hit the ground when h=0.

Substitute in the equation,

-16t^2+ 160t + 120=0

Applying quadratic formula, x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}

Where, a=-16, b=160 and c=120

x=\frac{-160\pm\sqrt{160^2-4(-16)(120)}}{2(-16)}

x=\frac{-160\pm\sqrt{33280}}{-32}

x=\frac{-160\pm 182.42}{-32}

x=\frac{-160+182.42}{-32},\frac{-160-182.42}{-32}

x=−0.70,10.70

Reject the negative value.

Therefore, the time taken for the flare to hit the ground is approximately 10.7 seconds.

4 0
3 years ago
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