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2 years ago

13

mikayla bought five skirts at $x each three of the five skirts came with a matching top for an adshenal $9 each write and simplf

y an expression that repersents the total cost

1 answer:

kiruha [24]2 years ago

5 0

Answer:

5x + 27

Step-by-step explanation:

This is because the 5 shirts for x dollars = 5x.

Then 3 shirts cost 9 dollars = 27.

So, the answer is 5x + 27

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Trava [24]

Answer:

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Step-by-step explanation:

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Click for the passage, "Studies in Ice."

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3 0

2 years ago

Please help me with all three! 25 Points!!

Gnoma [55]

a. 28 * 63

28 (60) + 28 (3) or 20 (60) +20 (3) + 8 (60) + 8 (3)

1680 + 84=1764 1200 / 60 +480 +24=1764

b. 17(59)

17 (50) + 17 (9) or 10 (50) + 10 (9) + 7 (50) +7 (3)

850 + 153=1003 500 + 90 + 63 =1003

c.458 (15)

458 (10) +458 (5) or 10 (400) + 10 (50) + 10 (8) + 5 (400) +5 (50) + 5 (8)

4580 +2290 = 6870 400 + 500 + 80 + 2000 + 250 + 40 = 6870

My work is kinda confusing but hope it helped

8 0

3 years ago

what is the product of 9.8 x 10 to the power of 3 and 8.8 x 10 to the power of 6 expressed in scientific notation

sergij07 [2.7K]

Answer:

9.8*10^3

= 9,800

8.8*10^6

= 8,800,000

4 0

2 years ago

Can someone help me with #19

zlopas [31]

Answer:

XZ,X(-10,9)

Y(-4,8)

is

X2,YZ(14-1)=12

8 0

2 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

2 years ago