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3 years ago

What is the distance between the points (7,5) and (7, -8) on a coordinate plane?

Mathematics

2 answers:

Elina [12.6K]3 years ago

8 0

Answer:

It should be 13

Step-by-step explanation:

Art [367]3 years ago

5 0

Answer:

Step-by-step explanation:

Since 5 is positive and 8 is negative, then you can just add the two.

5 + 8 = 13

Or use the distance formula:

Distance = $\sqrt{(x_{2} - x_{1}) ^{2} + (y_{2} - y_{1})^{2} }}\\\\\sqrt{(7 -7) ^{2} + (5 - (-8)) ^{2}}\\\\\sqrt{0 + 169} \\\\Approximately 13\\$

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In 17 weeks, Bruce earns $5,644 doing yard work. He earns the same amount each week. Let b stand for the amount earned each we

Marrrta [24]

5,644 / 17 = b
b = 332

4 0

3 years ago

Please help!!!! I need to pass this class!!

Liono4ka [1.6K]

Answer:

x is approximately 69.39 degrees.

Step-by-step explanation:

To find x in this triangle, we can use the sin rule:

$\frac{a}{sin(A)} =\frac{b}{sin(B)}$

The corresponding angle for each length is the one that lies directly opposite it. E.g. if 3.5 was our length 'a', then 55 degrees would be our angle A.

So let's take 3.5 and 55degrees as our length and Angle A, and 4 and x degrees as our length and angle B as we are trying to solve for x.

This would give us the following equation:

$\frac{3.5}{sin(55)} =\frac{4}{sin(x)} \\$

Since we are solving for an angle, it will be easier to rearrange the equation if we have it as the numerator, so we can flip the fractions to make it easier. It will still be equal as we are looking for the ratio.

$\frac{sin(55)}{3.5} =\frac{sin(x)}{4} \\$

From here let's isolate the sin(x) by multiplying by 4 and solving the values we have so far:

$\frac{4 sin(55)}{3.5} =sin(x)\\\frac{3.2766}{3.5} =sin(x)\\0.936=sin(x)$

Now the final step is to use inverse sin to cancel the sin so we just have x:

$sin^{-1} 0.936=x\\x=69.39$

x is approximately 69.39 degrees.

Hope this helped!

4 0

3 years ago

An electrician charges $40 to come to your house. She also charges $55 for each hour that she works. The electrician charges you

laiz [17]

The answer for this problem is two remainder seven

4 0

3 years ago

(02.04 MC) Your friend has $90 when he goes to the fair. He spends $5 to enter the fair and $15 on food. Rides at the fair cost

xeze [42]

Answer:

f(x)= $70 - $1.5*x

Step-by-step explanation:

You know your friend spends $ 5 to enter the fair and $ 15 for food. So the total you spent is given by:

$5 + $15= $20

Knowing that the trips at the fair cost $ 1.50 per trip, and with x being the number of trips, then the cost after x trips will be:

$1.5*x

So the money spent after x rides can be expressed as:

$20 + $1.5*x

Knowing that your friend has $90 when he goes to the fair, to calculate the amount of money he has left after x rides, the amount taken to the fair and the amount spent is subtracted:

$90 - ($20 + $1.5*x)

$90 -$20 -$1.5*x

$70 - $1.5*x

By calling the function f(x) used to determine the amount of money left after x trips, you can finally express:

5 0

4 years ago

A house painter can paint 2550 ft in 3 hr what is the house painters painting rate

kykrilka [37]

Answer: 850 fr per hour

Step-by-step explanation:

2550/3=850

8 0

3 years ago