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4 years ago

7

PLEASE HELP AM SO DESPERATE FOR HELP

1 answer:

motikmotik4 years ago

8 0

Answer:

15. a 7.9 miles

b. NO .

Step-by-step explanation:

From the table, on

Monday = 3 2/5

Wednesday = 4 1/2

Write the distance in improper fractions as;

Monday = 17/5

Wednesday = 9/2

Find the sum as

$\frac{17}{5} +\frac{9}{2} =\frac{34+45}{10} =\frac{79}{10}$

where the L.C.M is 10

Answer is 7.9 miles

b.

Distance covered on Thursday and Saturday will be

2 2/6 + 3 3/4

14/6 + 15/4 ------the L.C.M is 12

(28+45)/12

73/12

The distance 73/12 miles for Thursday + Saturday is less than that of Monday + Wednesday 79/10 miles. The answer is NO.

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3. At the mall, Leona bought a T-shirt and a book for a total of $23. The book cost $12. How much did the T-shirt cost?

Brut [27]

A. The unknown information is the price of the T-shirt

b. 23 = 12 + x

c. 23 = 12 + x
(-12) + 23 = 12 + ( -12) + x
11 = x
(Subtract 12 from 23 and you'll get 11)

d. She bought the T- shirt at the price of $11

I hope I helped! (Please pick me as Brainliest!)

6 0

4 years ago

The area is (2x + 15) square centimeters.

emmainna [20.7K]

Answer:

$Area\:shaded=\frac{3}{5} (2x+15)$

Step-by-step explanation:

Let $s$ be the shaded area and $u$ be the unshaded area, then we know that

(1). $\frac{s}{u}=\frac{3}{2}$

and

(2). $s+u=(2x+15)$

We solve for $u$ in the first equation and get:

$u=\frac{2}{3}s$

and put this into the second equation and get:

$s+\frac{2}{3}s=(2x+15)$

$s(1+\frac{2}{3} )=(2x+15)$

$s(\frac{5}{3} )=(2x+15)$

$\boxed{s=\frac{3}{5} (2x+15)}$

4 0

3 years ago

Tavon has a gift card for $70 that loses $3 for each 30-day period it is not used. He has another gift card for $ 60 that loses

vladimir2022 [97]

Hello,

Your answer would be: 55

<u><em>My work:</em></u>

For this problem all you have to do is keeping subtracting 3 until you get a matching number in which I got 55.

Hope this helps!

Brainliest!?!

Have a great day:)

~Rendorforestmusic

5 0

3 years ago

A water tank is in the shape of a right circular cone as shown above. The diameter of the cone is 10 feet, and the height is 15

Vsevolod [243]

Answer:

The rate at which the height of the water tank is changing is approximately 0.4244 ft/hour

Step-by-step explanation:

The given parameters are;

The diameter of the cone = 10 feet

The height of the cone = 15 feet

The rate at which water is leaking from the tank, (dV/dt) = 12 ft³/h

The volume of water in the tank = 27·π cubic feet

The volume V of a right circular cone with radius r and height h = 1/3×π×r²×h

The rate of change of the volume, dV, with time dt is given as follows;

The radius of the cone when the volume of the water in the tank is 27·π cubic feet is given as follows;

1/3×π×r²×h = 27·π ft³

The ratio of the height to the radius of the cone is h/r = 15/5 = 3

h/r = 3

∴ r =h/3

The volume of the cone, V = 1/3×π×r²×h = 1/3×π×(h/3)²×h = 1/27×π×h³ = h³/27×π

dV/dt = dV/dh × dh/dt

Which gives;

12 = d(h³/27×π)/dh × dh/dt = π×h²/9 × dh/dt

dh/dt = 12/(π×h²/9)

At 27·π ft³ = 1/27×π×h³ ft³, we have;

27 = 1/27×h³

27² = h³

h = ∛27² = 9

∴ dh/dt = 12/(π×h²/9) = 12/(π×9²/9) = 12/(π×9) = 4/(3·π) ≈ 0.4244 ft/hour

The rate at which the height of the water tank is changing ≈ 0.4244 ft/hour.

6 0

3 years ago

Miss Walter traveled 5 hours at 52 mph. How many miles did she travel?

kykrilka [37]

Answer:

260 miles

Step-by-step explanation:

52/1 = x/5

Cross multiply and divide by 1

8 0

3 years ago