All categories

3 years ago

Tìm x €N: a) 24:(2x-4)+14=26

Mathematics

1 answer:

professor190 [17]3 years ago

8 0

Answer:

2x-4+14=26 add -4+14 this will give you +10

2x+10=26 subtract 10 on both side this will give you 16

2x=16 divide by 2 on both side this will give you 8

x=8

Step-by-step explanation:

You might be interested in

Could someone please help? What is the scale factor of the dilation shown?

aalyn [17]

Answer:

C: 3/4

Step-by-step explanation:

Hopefully this helps!

4 0

3 years ago

Andy has a snowball (a perfect sphere) with the radius of 3 cm. He wanted the snowball to be bigger, so he spent four seconds pa

BigorU [14]

Answer:

Ratio = $\frac{64}{27}$

Step-by-step explanation:

Volume of Sphere is given by the formula:

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

Where

V is the volume

and

r is the radius

Original Volume, given r = 3, would be:

$V=\frac{4}{3} \pi r^3\\V=\frac{4}{3} \pi (3)^3\\V=\frac{4}{3}\pi (27)\\V=36\pi$

Increased snowball volume:

Radius increased 0.25 per second, he spent 4 seconds, so radius increase:

0.25 * 4 = 1 cm

New radius = 3 + 1 = 4 cm

New Volume would be:

$V=\frac{4}{3} \pi r^3\\V=\frac{4}{3} \pi (4)^3\\V=\frac{4}{3}\pi(64)\\V=\frac{256\pi}{3}$

Ratio of New Volume to Original would be:

$Ratio=\frac{\frac{256\pi}{3}}{36\pi}=\frac{256\pi}{3}*\frac{1}{36\pi}=\frac{64}{27}$

This is the ratio for current volume to original volume.

3 0

3 years ago

Find the mean and the median of this data set: 9, 8, 5, 3, 37, 8, 4, 2. The mean is and the median is .

tatyana61 [14]

Answer:

The mean is 9.5 and the median is 6.5.

Step-by-step explanation:

Add all numbers given.

9+8+5+3+37+8+4+2= 76

Then divide by the amount of numbers (8).

76/8= 9.5

<em>To find the median:</em>

Re-arrange the order of the numbers from least to greatest.

2, 3, 4, 5, 8, 8, 9, 37

Count towards the middle. If there is no exact middle (like this equation), then take the two middle numbers and add them.

5+8= 13

After, divide by two since there are two numbers being added.

13/2= 6.5

3 0

4 years ago

Find the pay per hour if you earned $102.67 for 16 hours worked.

guapka [62]

Answer:

heyooo!

the correct answer is youll be making 6.41 an hour.

hope this helps!!

Step-by-step explanation:

if you divide 102.67 by 16 hours youll end up with your hourly pay which is 6.41

6 0

3 years ago

A parking garage has 6 levels. Each level has 15 rows. Each row has the same number of parking spaces. There are 2,250 parking s

VladimirAG [237]

Answer:

$25$

Equation: $90x=2250$

Step-by-step explanation:

Let parking spaces in each row $=x$

In $1$ level there are $15\ rows$ so total number of parking spaces in 1 level $=15\times x=15x$

There are $6$ level so total number of parking spaces $=6\times 15x=90x$

$90x=2250\\\\x=\frac{2250}{90}\\\\x=25$

4 0

4 years ago