Ask question

Ask question

All categories

2 years ago

11

Simplify: 12 + 2 x 3 + ( 43 - 12) 68 54 70 18

1 answer:

Stolb23 [73]2 years ago

4 0

I got 49 hope that will help.

You might be interested in

Gdhhdhdhdhdhdhdbdbbdhd what makes up a atom

Alex73 [517]

Electrons protons and neutrons

5 0

2 years ago

Read 2 more answers

What’s the surface area of a cylinder that has the radius of 3 and the height of 7

arsen [322]

the answer could be 82.39822

5 0

3 years ago

Read 2 more answers

Last year, Shantell bought a car for $24,000. The current value of the car is $21,000. Find the percent decrease in the value of

Morgarella [4.7K]

<span>Last year, Shantell bought a car for 24 000 dollars. It decreases to 21 000 dollars this current year.
Let’s find for the percentage that it decreased.
=> in 24 000 the 50% is 12 000 as we all know since it’s divided by 2. So meaning, the possible answer is less than 50%.
=> now 25% of 24 000 is 6 000, and the amount that we’re looking is 3000, thus, the answer is 12.5%
=> 24 000 * 0.125 = 3000
=> 24 000 – 3000 = 21 000</span>

4 0

2 years ago

Given the perimeter of a rectangle and either the length or width, find the unknown measurement using the appropriate formula.

Ad libitum [116K]

The width is 18.

step by step:
1. 2 lengths are 20 which is 20+20 that's 40.
2. 76-40= 36
3. Two widths are 36 cm.
4. so do 36÷2 and that equals 18

8 0

3 years ago

Read 2 more answers

Two boats sail away from a buoy making a 90 degree angle. The first boat is 165 meters away and is traveling at 25 m/s. The seco

NikAS [45]

Answer:

Step-by-step explanation:

lets say in the shown triangle x=165

so speed $\frac{dx}{dt} =25$

and $\frac{dy}{dt} =35$

Also since distance = speed* time

time = pi minutes = pi/60 seconds

y = $\frac{35\pi \pi }{60}$

y = $\frac{7\pi }{12}$

Now using the pythagorean :

$x^2+y^2=z^2\\so \\165^2+(\frac{7\pi }{12} )^2 =z^2$

<u>derivate the equation so we get :</u>

$x\frac{dx}{dt} +y\frac{dy}{dt} =z\frac{dz}{dt} \\$ $165*25+35*\frac{7\pi }{12}=\sqrt{165^2+(\frac{7\pi }{12})^2} *\frac{dz}{dt}$

$\frac{dz}{dt} =25.387$ m/s

So Rate of change = <u><em>25.387 m/s</em></u>

5 0

3 years ago