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2 years ago

Help me please I really do need help tho

Mathematics

1 answer:

Mekhanik [1.2K]2 years ago

6 0

Answer: What musickp8809 said

Step-by-step explanation: Give him brainliest, bc that's what i want for christmas.

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carrie has 340 marbles to put in Vases she wants the vases to hold eathier 100 marbles or 10 marbles which way she can arrange t

ss7ja [257]

340 /10=34 or 340/100=3.4

7 0

2 years ago

A gum ball has a radius that is 30mm. The radius of the gumballs spherical hollow core is 28mm. What is the volume of the gum ba

Arada [10]

Answer:

V = 21145.01 mm³

Step-by-step explanation:

Given that:

The radius of the gumball = 30 mm

The radius of the spherical hollow-core = 28 mm

Consider the radius of the gumball to be $r_2$ and the radius of the spherical hollow-core to be $r_1$ . Then;

The volume of the gumball can be determined by using the formula of a sphere.

$V = \dfrac{4}{3}\pi (r_2^3 - r_1^3)$

$V = \dfrac{4}{3} \times \pi \times (30^3 - 28^3)$

V = 21145.01 mm³

5 0

3 years ago

If the principal is $300 rate 3% time 4 years then what is the interest earned and the new balance

Tomtit [17]

Answer:

a) Interest earned = $36

New Balance = $336

b) Interest rate = 0.05 or 5%

New Balance = $517.5

c) time t = 5

New Balance = $612.5

d) Principal Amount = $675

New Balance = $783

Step-by-step explanation:

We are given:

a) Principal (P) = $300

Rate (r) = 3% or 0.03

Time (t)= 4 years

Interest earned = ?

The formula used is: $Simple \ Interest (I)= P\times r\times t$

Putting values and finding interest

$Simple \ Interest (I)= P\times r\times t\\Simple \ Interest (I)= 300\times 0.03\times 4\\Simple \ Interest (I)= 36$

So, Interest earned = $36

New Balance = Principal + Interest = 300+36 = $336

b) a) Principal (P) = $300

Rate (r) = ?

Time (t)= 3 years

Interest earned = 67.50

The formula used is: $Simple \ Interest (I)= P\times r\times t$

Putting values and finding rate

$Simple \ Interest (I)= P\times r\times t\\67.50= 450\times r\times 3\\67.50=1350\times r\\r=\frac{67.50}{1350}\\r=0.05 \ or \ 5\%$

So, Interest rate = 0.05 or 5%

New Balance = Principal + Interest = 450+67.50 = $517.5

c) Principal (P) = $500

Rate (r) = 4.5% or 0.045

Time (t)= ?

Interest earned = $112.50

The formula used is: $Simple \ Interest (I)= P\times r\times t$

Putting values and finding time

$Simple \ Interest (I)= P\times r\times t\\112.50= 500\times 0.045\times t\\112.50=22.5 \times t\\t=\frac{112.50}{22.5}\\t=5$

So, time t = 5

New Balance = Principal + Interest = 500+112.50 = $612.5

d) Principal (P) = ?

Rate (r) = 8% or 0.08

Time (t)= 2 years

Interest earned = 108.00

The formula used is: $Simple \ Interest (I)= P\times r\times t$

Putting values and finding Principal

$Simple \ Interest (I)= P\times r\times t\\108=P\times 0.08 \times 2\\108=P\times 0.16\\P=\frac{108}{0.16}\\P=675$

So, Principal Amount = $675

New Balance = Principal + Interest = 675+108 = $783

8 0

2 years ago

A teacher gave her class two exams; 60% of the class passed the second exam, but only 48% of the class passed both exams. What p

zubka84 [21]

I think 80%

I also got stuck on it and searched it up I think its 80% but if I'm wrong I'm sorry

7 0

2 years ago

Read 2 more answers

Simplify the square root. Please explain

Alex787 [66]

Answer:

4/5

Step-by-step explanation:

Square of 1: 1*1=1

Square of 2: 2*2=4

Square of 3: 3*3=9

<u>Square of 4: 4*4=16</u>

<u>Square of 5: 5*5=25</u>

Square of 6: 6*6=36

Square of 7: 7*7=49

Square of 8: 8*8=64

Square of 9: 9*9=81

Square of 10: 10*10=100

Those are the basics.

I hope this helps!

pls ❤ and give brainliest pls

5 0

2 years ago

Read 2 more answers