Guest #2391992

2 months ago

**Answer:**

100+290=390

390+98=488

Question

10 x 900,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000

Solution 1

**Answer:**

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

Question

How to work out 1/5 decimal

Solution 1

**Answer:**

0.2

**Step-by-step explanation:**

1/5×2/2

=2/10

=0.2

Question

Convert 4:16:7 into a fraction

Solution 1

**Step-by-step explanation:**

1/2 $$$$$$$$$####################@@@@@

Question

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?

Solution 1

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

Question

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

**Answer:**

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.**

Question

What 3 numbers make up the average of negative 4?

Solution 1

Answer: -2, -6, -4

Because:

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

Because:

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

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