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aliina [53]
3 years ago
12

-12 + 45 25 + -77 Theres more in pic

Mathematics
1 answer:
miv72 [106K]3 years ago
3 0

Answer

|-12|+|45|=|12|+|45|= 12+45=57

Step-by-step explanation:

When you take the absolute value of a negative number it is the same thing as taking as a positive number. The absolute value is just that number. Once you teach the absolute value of each number perform the operation given In the problem.

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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
To two decimal places, find the value of k that will make the function f(x) continuous everywhere. f of x equals the quantity 3x
Fiesta28 [93]

Given function is

f(x)=\left\{\begin{matrix}3x+k & x\leq -4 \\ kx^2-5 & x> -4\end{matrix}\right.

now we need to find the value of k such that function f(x) continuous everywhere.

We know that any function f(x) is continuous at point x=a if left hand limit and right hand limits at the point x=a are equal.

So we just need to find both left and right hand limits then set equal to each other to find the value of k

To find the left hand limit (LHD) we plug x=-4 into 3x+k

so LHD= 3(-4)+k

To find the Right hand limit (RHD) we plug x=-4 into

kx^2-5

so RHD= k(-4)^2-5

Now set both equal

k(-4)^2-5=3(-4)+k

16k-5=-12+k

16k-k=-12+5

15k=-7

k=-\frac{7}{15}

k=-0.47

<u>Hence final answer is -0.47.</u>




7 0
3 years ago
Convert 240 yards per hour (yd/h) to yards per minute (yd/min).
krek1111 [17]

9514 1404 393

Answer:

  4 yd/min

Step-by-step explanation:

Change 1 hour to 60 minutes.

  (240 yd)/(1 h) = (240 yd)/(60 min) = 4 yd/min

6 0
3 years ago
Please i need help with this
Goshia [24]

Answer:

B.

Step-by-step explanation:

8 0
3 years ago
A certain colony of bacteria triples in length every 10 minutes, its length is now 1 millimeter. How long will it be in 40 minut
Law Incorporation [45]

Answer:

81 mm

Step-by-step explanation:

Now: 1 mm

In 10 minutes: 3 * 1 mm = 3 mm

In 20 minutes: 3 * 3 mm = 9 mm

In 30 minutes: 3 * 9 mm = 27 mm

In 40 minutes: 3 * 27 mm = 81 mm

Answer: 81 mm

3 0
3 years ago
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