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3 years ago

1800 tens equals blank thousands

Mathematics

1 answer:

kifflom [539]3 years ago

3 0

18 thousands = 1800 what grade are u in

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G 1) a2 + 3a – 40 = 0 . solving quadratic equations

QveST [7]

Answer:

The solution set is {-8, 5}.

Step-by-step explanation:

a^2 + 3a – 40 = 0 .

We need 2 numbers whose product is -40 and whose sum is +3.

They would be + 8 and - 5, so we have the factors:

(a + 8)(a - 5) = 0

Now either a + 8 = 0 or a - 5 = 0, so:

a = -8 or 5.

5 0

3 years ago

A bar of soap with dimensions 2 x 4 x 0.5 inches is sold for $3 individually. A three-pack of the same soap costs $8. How much d

LUCKY_DIMON [66]

We know that
volume of a bar of soap=2*4*0.5----> 4 in³

A bar of soap is sold for $3 individually
so
$3/4-----> 0.75 $/in³

A three-pack of the same soap costs $8
so
$8*(3*4)----> 0.67 $/in³

if you buy the three-pack you save-----> [0.75-0.67]=0.08 $/in³

the answer is
$0.08

7 0

3 years ago

(a) 3,235 ft? is about how many m??

tigry1 [53]

Answer:

If you mean m as in miles, then approx 0.61 miles.

Step-by-step explanation:

There are 5280 feet in a mile, so divide 3235 by 5280.

4 0

3 years ago

Read 2 more answers

Write the expression using only positive exponents. Assume no denominator equals zero.

ipn [44]

Answer:

The answer is

$\frac{4}{ {y}^{2} }$

6 0

3 years ago

Please give me the answers to all three I will mark u brilliant

elixir [45]

Answer:

First know the formula for the area of a circle;

Where 'π' represents pi(3.14 or 22/7), and 'r' stands for the radius being squared.

For the first problem, we can see that 12 is our diameter.

And to find the radius, we need to find 1/2 of the diameter (half of the diameter), so;

D/2 = R

Replace with actual values;

12/2 = 6, 6 is our radius.

Now we plug this into our formula:

A = π $r^{2}$

A = 3.14(6^2)

A = 3.14(36)

A = 113.04 centimetres is the area of the circle.

For the second problem, we can see that 18 is our diameter.

And to convert the diameter into the radius, we do what we did to the past problem, find 1/2 of the diameter.

So;

D/2 = R

18/2 = 9, 9 is our radius.

Now we plug this into our formula:

A = π $r^{2}$

A = 3.14(9^2)

A = 3.14(81)

A = 254.34 inches is the area for this circle.

For the third problem, we can see that our radius is already given, 5.

So now we just simply and easily plug this into our formula;

A = π $r^{2}$

A = 3.14(5^2)

A = 3.14(25)

A = 78.5 meters is the area for this circle.

4 0

2 years ago