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Debora [2.8K]
3 years ago
15

309,099,990 expanded form

Mathematics
2 answers:
Marrrta [24]3 years ago
5 0
Three hundred nine million ninety nine thousand nine hundred and ninety.
storchak [24]3 years ago
5 0
300,000,000+9,000,000+90,000+9,000+900+90
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URGENT HELPP!!!NO LINKS
Scrat [10]

Answer:

25 I believe

Step-by-step explanation:

think has 5 letters

only using it once ofc

5×5= 25

7 0
3 years ago
2 angles are supplementary. The measure of one angle is one-third of the other. Find the measure of BOTH angles.
morpeh [17]

Answer:

45° and 135°

Step-by-step explanation:

let one angle be "x" and the other be "y"

Angles which are supplementary total to 180°. This can be represented with the equation:

x + y = 180

If angle "x" is a third of angle "y", the situation is represented with this equation:

(1/3)x = y

Since fractions are difficult to work with, multiply the whole equation by 3.

(1/3)x = y   <= X 3

x = 3y

Use the equations x+y=180 and x=3y.

You can substitute x=3y into x+y=180.

x + y = 180

(3y) + y = 180    <=combine like terms

4y = 180   <=isolate y by dividing both sides by 4

y = 45

Substitute y=45 itno the equation x+y=180 to find x.

x + y = 180

x + 45 = 180   <=isolate x by subtracting 45 from both sides

x = 135

Therefore the angles are 45° and 135°.

5 0
3 years ago
Read 2 more answers
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k0ka [10]

Number 9 is A number 10 is C and number 11 is B thank you for your time

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The ratio of boys to girls in a class is 4:3. there are 9 girls. how many boys are in the class?
aalyn [17]
For every 3 girls, there are 4 boys. if there are nine girls, that expands to three extra boys, because for every three theres an extra one. so there are 12 boys (9+3.) the final ratio, boys to girls, is 12:9.
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3 years ago
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saveliy_v [14]

Answer:

2.71828

Step-by-step explanation:

took the quiz and got it right

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