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3 years ago

Please help me if you can. Please also write how you got the answer thank you.

Mathematics

2 answers:

erica [24]3 years ago

4 0

Bob is 5

so the answer is 5

shusha [124]3 years ago

3 0

Answer:

Bob is 5

Equation = 2x + 2 = 8

Step-by-step explanation:

Let's assign some expressions;

Sister = x

Bob = x+2

Bob + Sister = 8

Now, substitute with the expressions:

Bob + Sister = 8 =

x + x + 2 = 8

Now simplify and solve the equation:

2x+2=8

x = 3

Sister = 3, Bob = 5

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6 + (-9) - (-4) - 3 help

Grace [21]

Hi!

Answer:

6 + (-9) - (-4) - 3 =

= 6 - 9 - b (-4) - 3

= 6 - 9 + 4b - 3

= -6 + 4b

= 4b - 6

I hope I helped you! Good luck at school!

7 0

3 years ago

7. The bottom of a circular swimming pool

mote1985 [20]

<h2>Hello!</h2>

The answer is:

1017.88 square feet are blue.

To calculate how many square feet are blue, we need to calculate the area of the bottom of the circular swimming pool.

We need to remember that we can calculate the area of any circle using the following formula:

$Area_{circle}=\pi radius^{2}$

Now, we know that the diameter of the bottom is equal to 36 feet, so, we can calculate the radius of the bottom using the following formula:

$diameter=2radius\\\\radius=\frac{diameter}{2}$

So,

$radius=\frac{36feet}{2}=18feet$

Then, calculating the area we have:

$Area_{bottom}=\pi radius^{2}=\pi 18ft^{2}=1017.88ft^{2}$

Hence, we have that 1017.88 square feet are blue.

Have a nice day!

4 0

4 years ago

The mean lifespan of a sylvania light bulb is 1600 hours with a standard deviation of 300 hours, an iqr of 450 hours, and a rang

IgorLugansk [536]

Given that the mean lifespan of a sylvania light bulb is 1600 hours with a standard deviation of 300 hours, an iqr of 450 hours, and a range of 690 hours. the lifespan distribution is relatively symmetric.

Since, the distribution is relatively symmetric, the measure of spread that is the best measurement is the standard deviation.

6 0

3 years ago

Solve for y 2x + 5y > 3y + 10

vladimir1956 [14]

Answer:

y>5-x

Step-by-step explanation:

To solve this problem we need start by grouping terms in the same side of inequality.

Lets begging by grouping 'y' terms on the left side of inequality sign, to do this, subtract 3y to both sides:

2x+5y-3y>3y-3y+10

2x+2y>10

Now lets subtract 2x to both sides of inequality.

2x-2x+2y>10-2x

2y>10-2x

Now isolate variable x by dividing the inequaiity by 2.

y>5-x

That is the solution

7 0

3 years ago

The height of a car is about how many inches?

Grace [21]

Answer:it depends on the car All cars are different some are the same slightly it's like humans not all are the same

Step-by-step explanation:

3 0

3 years ago