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3 years ago

In the picture, thanks :)

Mathematics

1 answer:

Mrrafil [7]3 years ago

8 0

Answer is G
2y-x=10
Division by 2 to get rid of it
Y-x=5
Add x to both side to make y to stay alone
Y=x+5

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A card is drawn from a standard deck. Find the probability of drawing a heart or a 7.

Mazyrski [523]

<h3>Answer: 4/13</h3>

=======================================================

Explanation:

There are A = 13 hearts and B = 4 copies of "7"

The count A+B = 13+4 = 17 may seem like it's the count of hearts or "7" cards, but we're double counting the 7 of hearts. So the true count is actually 17-1 = 16

There are 16 cards we want (either a heart or a "7") out of 52 total. Therefore, the probability is 16/52 = (4*4)/(4*13) = 4/13

6 0

3 years ago

All 231 students in math club went on a field trip some rode in vans that held 7 people and some rode on buses that held 25 peop

MariettaO [177]

Answer:

8 vans

7 buses

Step-by-step explanation:

Let there be "b" buses

and "v" vans

Since 7 people is the capacity of vans, the total capacity is

Also, since 25 people is the capacity of 1 bus, the total capacity is

25b

In total 231 people, so we can write our first equation as:

7v + 25b = 231

Now, we know there are 15 vehicles (bus + vans) in total, so we can write our 2nd equation as:

v + b = 15

Now, we solve for v and b. Let's solve the 2nd equation for v and substitute that into 1st and solve for b first:

v + b = 15

v = 15 - b

Now,

$7v + 25b = 231\\7(15-b) + 25b = 231\\105-7b+25b=231\\18b=126\\b=7$

Hence, there are 7 buses

Since 15 vehicles in total, the number of vans is:

15 - 7 = 8 vans

So,

8 vans

7 buses

8 0

4 years ago

Answer please as best as you can

mash [69]

The volume of a larger cone:

$V_l=\dfrac{1}{3}\pi\cdot4.5^2\cdot(3+6)=\dfrac{1}{\not3_1}\pi\cdot20.25\cdot\not9^3=(20.25)(3)\pi=60.25\pi\ cm^3$

The volume of a smaller cone:

$V_s=\dfrac{1}{3}\pi\cdot3^2\cdot6=\dfrac{1}{\not3_1}\pi\cdot\not3^1\cdot3\cdot6=18\pi\ cm^3$

The volume of the frustum:

$V=V_l-V_s\\\\V=60.25\pi-18\pi=42.75\pi\ cm^3$

<h3>Answer: 42.75π cm³.</h3>

4 0

3 years ago

8 rows of 7 squares.<br> What is 56 ÷ 7?

serious [3.7K]

Answer: 56 ÷ 7 = 8

because 58 divided by 7 equals 8 and 7 times 8 equals 54

8 0

3 years ago

Hello! -will give brainiest to the correct answer- (just doing this for fun)

Nataly_w [17]

Answer:

8 • (y + 3)

Step-by-step explanation:

Processing ends successfullyplz mark me as brainliest :)

6 0

3 years ago

Read 2 more answers