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3 years ago

PLEASE PLEASE HELP I WILL GIVE THE BRAINLIEST

Mathematics

1 answer:

salantis [7]3 years ago

7 0

Answer:

9.45+189=198.45

Step-by-step explanation:

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Margaret is cutting a block of cheese into smaller cubes measuring 1 cm by 1 cm by 1 cm.How many unit cubes of cheese can she cu

nirvana33 [79]

How what size is the large block?
Convert the measurements of the large block to cm.
Then calculate the Volume of the large cube.
The answer will be in cubic cm. That is the number of 1 cm cubes.

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3 years ago

3.5 and 3 write a quadratic equation with each pair of values as roots

VLD [36.1K]

Hello from MrBillDoesMath!

Answer: x^2 - 6.5x + 10.5 = 0

Discussion:

If the roots are 3 and 3.5, then the quadratic equation is

(x -3 ) ( x - 3.5) = 0

x * (x - 3.5) - 3 (x - 3.5) = 0

X^2 - 3.5X - 3X + 3(3.5) = 0

x^2 - 6.5x + 10.5 = 0

Thank you,

MrB

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3 years ago

Laticia randomly selected 25% of the seventh grade students in her school and asked them their favorite season. Of the students

Marysya12 [62]

I would say 75 or 150
Do u know how many students are in her school?

4 0

3 years ago

One gallon of water weighs about 8.34 pounds. How much does 3.5 gallons of water weigh?

adelina 88 [10]

Answer:

i'm really smart i scored a on this topic

8.34 * 3 = 25.02

8.34 * 0.5 = 4.17

25.02 + 4.17 = 29.19

Step-by-step explanation:

msg me if u dont understand ill tutor

8 0

2 years ago

Read 2 more answers

Half-life of Po-210 is 140 days. If the initial mass of the sample is 5

Anna35 [415]

Answer:

$0.625kg$

Step-by-step explanation:

we are given half-life of PO-210 and the initial mass

we want to figure out the remaining mass after 420 days

in order to solve so we can consider the half-life formula given by

$\displaystyle f(t) = a {0.5}^{t/T}$

where:

f(t) is the remaining quantity of a substance after time t has elapsed.
a is the initial quantity of this substance.
T is the half-life

since it halves every 140 days our T is 140 and t is 420. as the initial mass of the sample is 5 our a is 5

thus substitute:

$\displaystyle f(420)=5\cdot{0.5}^{420/140}$

reduce fraction:

$\displaystyle f(420)=5\cdot{0.5}^{3}$

By using calculator we acquire:

$\displaystyle f(420)=0.625$

hence, the remaining sample after 420 days is 0.625 kg

4 0

3 years ago