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3 years ago

Multiply and answer in scientific notation: (3.8 x 108)(6.9 x 105)

Mathematics

2 answers:

zhannawk [14.2K]3 years ago

8 0

Answer:

2.973348x10^5 or 2.973348e5

Step-by-step explanation:

(3.8x108)(6.9x105)

410.4x724.5

297334.8

and it will be 2.973348 x 10^5 or 2.973348e5

shtirl [24]3 years ago

3 0

Answer:297334.8

Step-by-step explanation:

(410.4) (724.5)

=297334.8

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miss Akunina [59]

Answer:

a 3² +4² = 25 the factors are 5²

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3 years ago

Positive numbers are located to the right of zero on the number line.<br><br><br> True False

Trava [24]

$\text {Hi!}$

$\text {The Answer to this Problem Is:}$

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7 0

3 years ago

Read 2 more answers

Hector, Sam, Ted, and Gina are comparing their savings. Hector saved twice as much money as Sam. Ted saved $100 more than Hector

lutik1710 [3]

Answer:

$2x+50$

Step-by-step explanation:

Given: Hector saved twice as much money as Sam.

Ted saved $100 more than Hector.

Gina saved $50 less than Ted.

As given, lets assume the amount of money Sam has in saving be "x".

Now, finding saving of each person given.

Writing the algebric expression of each´s saving amount.

we know, Hector saved twice as much money as Sam.

∴ Hector saving= $\$2x$

Also, Ted saved $100 more than Hector.

∴ Ted´s saving= $\$(2x+100)$

Next finding Gina´s saving

As given, Gina saved $50 less than Ted.

∴ Gina´s saving= $\$ (2x+100)-\$ 50$

Opening parenthesis and solving it.

⇒ Gina´s saving= $\$ 2x+\$50$

Algebric expression of Gina´s saving= $2x+50$

5 0

3 years ago

If x=12 what is that value of 5(x-4)

Kamila [148]

Answer: 40

Step-by-step explanation:

You need to plug in 12 for x

5(12 - 4) = 5 x 8 = 40

3 0

3 years ago

The answer is 35 degrees, but I am unsure of the process in order to get to that answer.

hammer [34]

Answer:

Step-by-step explanation:

Hello There!

So first things first

we need to find the measure of ∠ABD

If you didn´t know the sum of the triangle angles is 180

so to find ∠ABD we subtract the given angles ( 30 and 25) from 180

180-25-30=125

so angle ∠125

Now lets find ∠DBC

∠ABD and ∠ DBC are supplementary angles so the sum of the two angles is 180

So to find ∠DBC we subtract 125 from 180

180-125=55

so ∠DBC = 55

Now we can find the measure of ∠BDC

remember like stated before the sum of all of the angles in a triangle is 180

So to find the measure of ∠BDC we subtract the given angles from 180

180-90-55=35

so we could conclude that ∠BDC = 35

Other ways to solve for ∠DBC:

angle DBC is an exterior angle of ΔABD

the measure of an exterior angle is equal to the sum of the opposite interior angles

so basically ∠DBC = ∠ADB + ∠BAD

30+25=55 so ∠DBC = 55

Other ways to find angle BDC:

Having found the measure of ∠DBA and the other opposite angle we could find ∠BDC

Like stated before the measure of an exterior angle is equal to the sum of the opposite interior angles

basically ∠DBA = ∠BDC + ∠BCA

we have the measures of ∠BCA and ∠DBA so we plug in the values

125=∠BDC+90

isolate the variable by subtracting each side by 90

125-90=35

we´re left with

∠BDC=35

I hope this helps and if you have anymore questions, feel free to ask! :)

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3 years ago

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