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3 years ago

Write the numerical expression in words two different ways. 7/ (10-3)

Mathematics

1 answer:

MissTica3 years ago

3 0

Answer:

seven divided by the difference of ten and three

seven over the difference of ten and three

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The gas tank of a riding mower holds 5 liters of gas.How many 5 -liters gas tanks can you fill from a full 20- liter gad can?

aliina [53]

Answer:

Step-by-step explanation:

If the gas tank holds 5 liters and you have 20 liters, then 20/5 = 4 times it will fill it up.

8 0

3 years ago

A culture started with 3000 bacteria. After 4 hours, it grew to 3,600 bacteria. Predict how many bacteria will be present after

Vlad [161]

Hello Shannonrodrigue. You can solve this by setting up an exponential growth equation.

$A = A_ob^t$
$3600 = 3000b^4$

Now we solve for b
$3600 = 3000b^4$
$\frac{3600}{3000} = \frac{3000b^{4}}{3000}$
$\frac{6}{5} = b^4$
$\sqrt[4]{\frac{6}{5}} = \sqrt[4]{b^4}$
$\sqrt[4]{\frac{6}{5}} = b$

Now that we have found b, we can use the equation $A = 3000b^t$ to predict how many bacteria will be present after 10 hours.
$b = \sqrt[4]{\frac{6}{5}}$
t = 10
$A = 3000b^t$
$A = 3000\sqrt[4]{\frac{6}{5}}^{10} = 4732.3228 = 4732$

Answer = 4732

4 0

3 years ago

the length of a rectangle is 1 meter less than its width. the area of the rectangle is 42 square meters. find the dimensions of

Keith_Richards [23]

Length - 6 meters
width - 7 meters

5 0

3 years ago

This is writing an expression for the perimeter! Explain how you got your answer.

Kisachek [45]

Hey

périmètre = 2 ( x + 2 x - 5) = 2 x + 4 x - 10 = 6 x - 10

3 0

3 years ago

There are 2 Senators from each of 50 states. We wish to make a 3-Senator committee in which no two members are from the same sta

Morgarella [4.7K]

Answer:

a) rCn = 1176

b) 2352

Step-by-step explanation:

a)Each committee should be formed with 3 members ( no two members could be of the same state) then

Let´s fix a senator for any of the 50 states so in the new condition we need to combined 49 senators in groups of 2 then

rCn = n! / (n - r )! *r!

rCn = 49!/ (49 - 2)!*2!

rCn = 49*48*47! / 47!*2!

rCn = 49*48 /2

rCn = 1176

So we can choose in 1176 different ways a senator for a given state

b) To answer this question we have to note, that, 1176 is the number of ways a committee can be formed with senators of different sate (taking just one senator for state ) if we have 2 senators we need to multiply that figure by 2.

1176*2 = 2352

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3 years ago