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4 years ago

Express 2.91x10^-4 in decimal notation

Mathematics

1 answer:

Verizon [17]4 years ago

3 0

Answer:0.000291

Step-by-step explanation:

Since the exponent is negative, you move the decimal 4 spaces to the left

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lesya692 [45]

Answer:

the third one is the correct answer

Step-by-step explanation:

hope that helps

7 0

3 years ago

Two complementary angles have measures of `s` and `t`. If `t` is 9 less than twice `s`, what are the measures of each angle?

Sophie [7]

Answer:

s measures 33° and t measures 57°.

Step-by-step explanation:

Since the two angles s and t are complementary, this implies that:

$m\angle s+m\angle t=90$

We are given that t is 9 less than twice s. Hence:

$m\angle t=2m\angle s-9$

We can substitute this into the first equation:

$m\angle s+(2m\angle s-9)=90$

Solve for s. Combine like terms:

$3m\angle s-9=90$

Adding 9 to both sides yields:

$3m\angle s=99$

And dividing both sides by 3 gives us that:

$m\angle s=33^\circ$

Returning to our second equation, we have:

$m\angle t=2m\angle s-9$

So:

$m\angle t=2(33)-9=66-9=57^\circ$

So, s measures 33° and t measures 57°.

7 0

3 years ago

Read 2 more answers

I bought 10 presents for Christmas. Some were £20 and some were £22.50. If the total cost was £217.50 how many of the £22.50 pre

Burka [1]

Answer:

Let's denote:

Number or gifts cost 20 = x

Number or gifts cost 22.5 = y

Then, we have:

x + y = 10

20x + 22.5y = 217.5

=> 20(10 - y) + 22.5y = 217.5

=> 2.5y = 17.5

=> y = 7 (Number or gifts cost 22.5)

=> x = 10 - 7 = 3 (Number or gifts cost 20)

Hope this helps!

8 0

3 years ago

what is the smallest positive integer that can be doubled to get a perfect cube and tripled to get a perfect square

enot [183]

Its 1

Doubled:-

$\\ \rm\longmapsto 1\times 1=1=1^3$

<h3>Tripled</h3>

$\\ \rm\longmapsto 1\times 1\times 1=1=1^2$

5 0

3 years ago

Someone please help and show ur work

Luda [366]

Answer:

Exact Form: -9/2

Decimal Form: -4.5

Mixed Number Form:

−4 1/2

Step-by-step explanation:

check the work below

5 0

3 years ago

Read 2 more answers