All categories

3 years ago

Please help- its the last one i have to get done

Mathematics

1 answer:

ycow [4]3 years ago

5 0

Step-by-step explanation:

5x-6+3x+90=180

8x+84=180

8x=96

x=12

Plug it in to 3x

3x12=36

You might be interested in

WILL MARK BRAINLIEST

aniked [119]

Answer:

Step-by-step explanation:

8 0

4 years ago

Each day for two workweeks (10 days total), George weighs 4 bags from that day’s production. If the average of the means is 14 o

alina1380 [7]

Answer:

a. 13.7084 oz.

Step-by-step explanation:

Formula for Lower Control Limit =

(LCL = x-bar - A²R-bar)

x - bar = 14 oz

A2 = 0.729

R - bar = 0.4 oz

= 14 - 0.729 × 0.4

= 14 - 0.2916

= 13.7084oz

7 0

3 years ago

a circular oil slick is expanding at a rate of 2m^2/h. Find the rate at which it's diameter is expanding when it's radius is 1.5

aleksandrvk [35]

Answer: $\frac{4\pi}{3} \text{ meter per hour}$

Step-by-step explanation:

The circular oil slick is expanding at a rate of $2 m^2/h$

Let A be the area of the circular oil slick,

So, the changes in A with respect to time (t),

$\frac{dA}{dt} = 2$

$\frac{d(\pi r^2)}{dt} = 2$

$2\pi r\frac{dr}{dt} = 2$

$\frac{dr}{dt} = \frac{1}{\pi r}$

Also, the change in diameter with respect to time(t),

$\frac{d}{dt} (2 r) = 2 \frac{dr}{dt}$

$\frac{d}{dt} (2 r) = 2 \times \frac{1}{\pi r}$

$\frac{d}{dt} (2 r) = \frac{2}{\pi r}$

For r = 1.5 m,

$\frac{d}{dt} ( 2 r)]_{r=1.5} = \frac{2}{\pi \times 1.5}=\frac{20}{\pi \times 15}=\frac{4\pi }{3}\text{ meter per hour}$

7 0

3 years ago

Last year, your store had total sales of $190,000. Because of a downturn in the economy, you expect sales to decrease by 3% this

Sunny_sXe [5.5K]

A because if you take the 190000 and multiply it by 3% and then subtract which is 5700 and take 190000 and subtract it by 5700 it will give u the answer is 184300

7 0

3 years ago

If D =RT<br> Calculate the distance when the rate is 20 MPH and Time =15 hours

algol13

Answer:

300m

Step-by-step explanation:

Because d = rt
20 * 15 = 300

7 0

2 years ago