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algol13
3 years ago
15

HELP ASAP!!!!!!!!!!!!!!!!!

Mathematics
1 answer:
Nadusha1986 [10]3 years ago
8 0

Answer:

#3 2 Right, 4 Down & #4 Vertical Compression

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The sum of 1 2 and 1 5 is between 1 2 and 1. true or false
klemol [59]

Answer:

I can't tell if that's 12 and 15 or 1 and 2 and 5 so i did both of them bellow

Step-by-step explanation:

12 + 15 = 27 so false

1+2+1+5 = 9 true

5 0
2 years ago
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A spherical balloon currently has a radius of 19cm. If the radius is still growing at a rate of 5cm or minute, at what rate is a
miv72 [106K]

Answer:

22670.8 cm³/min

Step-by-step explanation:

Given:

Radius of the balloon at a certain time (r) = 19 cm

Rate of growth of radius is, \frac{dr}{dt}=5\ cm/min

The rate at which the air is pumped in the balloon can be calculated by finding the rate of increase in the volume of the balloon.

So, first we find the volume of the sphere in terms of 'r'. As the balloon is spherical in shape, the volume of the balloon is equal to the volume of a sphere. Therefore,

Volume of balloon is given as:

V=\frac{4}{3}\pi r^3

Now, rate of increase of volume is obtained by differentiating both sides of the equation with respect to time 't'.

Differentiating both sides with respect to time 't', we get:

\frac{dV}{dt}=\frac{d}{dt}(\frac{4}{3}\pi r^3)\\\\\frac{dV}{dt}=\frac{4\pi}{3}(3r^2)(\frac{dr}{dt})\\\\\frac{dV}{dt}=4\pi r^2(\frac{dr}{dt})

Now, plug in 19 cm for 'r', 5 cm per minute for \frac{dr}{dt} and solve for \frac{dV}{dt}. This gives,

\frac{dV}{dt}=4\pi (19 cm)^2(5\ cm/min)\\\\\frac{dV}{dt}=4\times 3.14\times 361\times 5\ cm^3/min\\\\\frac{dV}{dt}=22670.8\ cm^3/min

Therefore, the rate at which the air is being pumped into the balloon is 22670.8 cm³/min.

4 0
3 years ago
Show how to solve 1/4 (4 + x) = 4/3<br><br><br><br> pls solve for 2 brainliest
Thepotemich [5.8K]
Simplify
1
4
(
4
+
x
)
4
1
​
(4+x) to
4
+
x
4
4
4+x
​
.
4
+
x
4
=
4
3
4
4+x
​
=
3
4
​


2 Simplify
4
+
x
4
4
4+x
​
to
1
+
x
4
1+
4
x
​
.
1
+
x
4
=
4
3
1+
4
x
​
=
3
4
​


3 Subtract
1
1 from both sides.
x
4
=
4
3
−
1
4
x
​
=
3
4
​
−1

4 Simplify
4
3
−
1
3
4
​
−1 to
1
3
3
1
​
.
x
4
=
1
3
4
x
​
=
3
1
​


5 Multiply both sides by
4
4.
x
=
1
3
×
4
x=
3
1
​
×4

6 Simplify
1
3
×
4
3
1
​
×4 to
4
3
3
4
​
.
x
=
4
3
x=
3
4
​
4 0
3 years ago
Which answer choice is a solution to the inequality 1.5x + 3.75 greater than or equal to 5.5
irga5000 [103]

Answer:

x≥\frac{7}{6}

Step-by-step explanation:

given 1.5x+3.75≥5.5

→  1.5x≥5.5-3.75

→  1.5x≥1.75

→  x≥\frac{1.75}{1.5}

→  x≥\frac{7}{6}

8 0
3 years ago
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Mrs. Lynch has noted that 7 out of every 10 pieces of mail she gets are junk mail. What percent of her mail is junk?
-BARSIC- [3]
I think it would be 70% of her mail
8 0
3 years ago
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