 admin # .what is 100+290 and 98​

2 months ago

## Solution 1 Guest #2391992
2 months ago

100+290=390

390+98=488

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10 x 900,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000
Solution 1

9e+51

Step-by-step explanation:

Since there is not enough space for that many zeros, there would be 51 zeros after the nine.

Solution 2
Just add an extra zero which acts as a place holder when multiplying by 10
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How to work out 1/5 decimal
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0.2

Step-by-step explanation:

1/5×2/2

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The number of years since Lena graduated from middle school can be represented by the equation y = a - 12, where y is the number of years and a is her age. Is the relationship between the number of years since Lena graduated and her age proportional or nonproportional?
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No it’s not proportional. If you had a coefficient in front of the a it could have been proportional. But the addition or subtraction of a quantity leads it to be nonproportional
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What time is it 120 minutes after midday?​
Solution 1
Midday is 12pm so you add whatever hours to that. Which is 1:20pm after midday (12pm)
Question
4. drawing a red or blue marble from a bag of red marbles and blue marbles
Solution 1
If you assume that their are the same number of balls on the bag (red and blue) you should be able to pull 50% of the time red or blue ball no matter the # of balls in the bag so long as they are equil. (Hope this helps,I did my best which the description of the question)
Question
(3.1-1.15)^2/0.005​
Solution 1

Answer for (3.1 - 1.15)²/0.005 is 760.5

Step-by-step explanation:

• Step 1: Given expression is (3.1 - 1.15)²/0.005
• Step 2: Simplify the expression using algebraic equation

(a - b)² = a² - 2ab + b². Here a = 3.1 and b= 1.15

⇒ (a - b)² = (3.1)² - 2×3.1×1.15 + (1.15)²

= 9.61 - 7.13 + 1.3225

= 10.9325 - 7.13 = 3.8025

• Step 3: Find the solution to the expression

⇒ (3.1 - 1.15)²/0.005 = 3.8025/0.005 = 760.5

Question
Find the area of triangle ABC to the nearest tenth. In , a = 11, c = 11, and B = 100°.
Solution 1

area ≈ 59.6 units²

Step-by-step explanation:

Calculate the area (A) of the triangle using

A = ac sinB

That is one half the product of the 2 sides and the sine of the included angle, thus

A = × 11 × 11 × sin100° ≈ 59.6 units² ( to the nearest tenth )

Question
The product of 2 numbers is -24 and their sum is -5. What are the two numbers and why are they the two numbers?
Solution 1

The numbers are (-8, 3) or (3, -8).

Step-by-step explanation:

• Step 1: Given the product of the numbers are -24 and their sum are -5. Let the numbers be a and b. Form equations out of these details.

⇒ a + b = -5 ⇒ b = -5 - a

⇒ a × b = -24 -------- (1)

• Step 2: Substitute the value of b in eq(1)

⇒ a × (-5 - a) = - 24

⇒ -5a - a² = -24

⇒ a² + 5a - 24 = 0

• Step 3: Solve the quadratic equation for a.

a = (-5 ± √25 - 4 × 1 × -24)/2

= (-5 ± √121)/2

= - 16/2, 6/2 = -8 or 3

• Step 4: For each value of a, find b.

When a = -8, b = -5 +8 = 3

When a = 3, b = -5 - 3 = -8.

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What 3 numbers make up the average of negative 4?
Solution 1

Because:
(-2)+(-6)+(-4) = -12, then divide -12 by 3, which equals -4

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