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2 years ago

No rush. I need help on this question. I need an explanation pleaseeeeee. Thank you in advance!

Mathematics

2 answers:

maksim [4K]2 years ago

8 0

Answer:

2 vans and 7 busses

Step-by-step explanation:

Let x=# of busses

Let y=# of vans

55x+12y=409

x=y+5

55(y+5)+12y=409

55y+275+12y=409

67y+275=409

134=67y

y=2

There were two vans, and y+5 (7) busses

Alina [70]2 years ago

6 0

Answer:

1) 275

2)60

Step-by-step explanation:

1) 55 x 5 =275

2) 12 x 5 = 60

Hope it helps!

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Omar rides his unicycle on the playground.

Licemer1 [7]

Answer:

439.6 inches

Step-by-step explanation:

The distance apart cna be obtained using the formular :

Number of revolutions = 7

Diameter, d = 20 inches

π * number of revolutions * diameter

3.14 * 7 * 20

= 439.6 inches

6 0

2 years ago

At sea level, earths atmosphere exerts a pressure of 1 atmosphere. Atmospheric pressure P (in atmospheres) decreases with altitu

PtichkaEL [24]

Answer:

Initial Amount=1

Decay Factor=0.99987

Decay Rate=0.013%

Step-by-step explanation:

If P = 0.99987ᵃ

I. Initial amount

The initial amount is when a=0

P = 0.99987⁰ = 1

The Pressure at Sea Level=1

II. Decay factor

This is like the decay constant. From the model, P = 0.99987ᵃ, the decay constant/factor is 0.99987.

III. Decay Rate = 1-0.99987 = 0.00013

Expressed in Percentage = 0.013%

5 0

2 years ago

Read 2 more answers

How do I find the x and the y

mart [117]

Answer:

x = 22

y = 35

Step-by-step explanation:

Because its an isosceles triangle, you know the base angles are equal so:

$3x - 11 = 2x + 11$

Solving:

subtract 2x from both sides

$x-11=11$

add 11 to both sides

$x = 22$

Next, find the angle measures of the two base angles:

$3*22-11\\66-11\\55$

To find y, you know that the interior angles of the whole triangle add up to 180, so you have

$55 + 55 + 2y = 180$

solving,

$110 + 2y = 180$

subtract 110 from both sides

$2y = 70$

divide both sides by 2

$y = 35$

3 0

2 years ago

Read 2 more answers

Answer any of these, no work is necessary. Thank you so much!

faust18 [17]

Answer: use math-way Have a nice day

3 0

2 years ago

31<9 and --3X = 4X = 15X = 12X = 11x = 18

JulsSmile [24]

Given:

$\frac{3x}{4}$

Find: values belong to the solution

Explanation:

$\begin{gathered} \frac{3x}{4}$

and

$\begin{gathered} -\frac{x}{6}\ge-3 \\ -x\ge-18 \\ x\leq18 \end{gathered}$

so those values are solution which is x<12

i.e; x=4 and x=11

5 0

1 year ago