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RideAnS [48]
3 years ago
13

Evaluate:45/60+12/60-4/60

Mathematics
1 answer:
sdas [7]3 years ago
3 0
Remember to incorporate Bimdas, into you calculation and ensure where the addition and subtraction occur you work from left to right.

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Solve each equation and check.show all work. ​
harina [27]

Answer:

-b=11

Step-by-step explanation:

Nothing else is equal to a number except its self

4 0
3 years ago
Sam ran 6 miles in an hour. What is the rate in feet per minute?
ASHA 777 [7]
31680 per minute enjoy your answer
4 0
3 years ago
Archie earns $4 a week for doing choirs. How much will Archie warm in 2 months if there are four weeks in each month?
siniylev [52]

Hello! The answer for your question would be $32. This is because if Archie earns $4 a week and there are 4 weeks in each month, and he works for 2 months, then 4*4 for one week would equal $16. This times 2 would equal $32 therefore, Archie earned $32 dollars for 2 months of doing chores.

4 0
3 years ago
When a river​ flows, the strength or force of the river depends on how far the river falls vertically compared to how far it flo
strojnjashka [21]

The figure is missing. There are several problems with same wording but different numbers

Here, we can use:

  • Horizontal distance: 258 feet

  • Vertical fall: 56.0 feet

Answer:

  • Slope = 56.0 ft / 258 ft ≈ 0.217

Explanation:

The <em>slope</em> measures how the rate of change of the vertical distance (vertical fall) with respect to the horizontal distance.

There are several forms to express this with words, which represent the same formula. Here are some of them:

  • Slope = rise / run
  • Slope = vertical change / horizontal change
  • Slope = change in y / change in x
  • Slope = Δy / Δx
  • Slope = (y₂ - y₁) / (x₂ - x₁)

As said, all those forms mean the same; they are equivalent.

Here, we have vertical fall = 56.0 feet, and horizontal distance = 258 feet, and by specifications of the problem (in the hint) the slope must be positive. Thus, you get:

  • Slope = vertical fall / horizontal distance = 56.0 feet / 258 feet ≈ 0.217
8 0
3 years ago
What is the answer?<br> x^2 + 4x - 6 = 0
vodka [1.7K]
First we have to find \Delta from the equation b^{2} -4ac where a, b and c are consecutive coefficients of the equation. In this case: a=1, b=4, c=-6

<span>\Delta =4^2-4*(-6)=16+24=40, </span>

Later we will need to use \sqrt{\Delta} sofor us \sqrt{40}. It can be then simplified to 2 \sqrt{10}.

Then we use quadratic formula x=\frac{-b\pm \sqrt{\Delta} }{2a} to see what are the options for x.

x=\frac{-4\pm 2\sqrt{10}}{2}
x=- 2 \pm \sqrt{10}

The answer for your question:
<span>x=- 2 + \sqrt{10} or x=- 2 - \sqrt{10}</span>
8 0
3 years ago
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