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Finger [1]
3 years ago
12

Any one want to talk

Mathematics
2 answers:
Troyanec [42]3 years ago
8 0
Sure, what do you want to talk about??
Hatshy [7]3 years ago
8 0
This isnt the Right place
You might be interested in
A student states that the reflection of triangle ABC across the y-axis is triangle A’B’C’. Determine if the student is correct o
Svet_ta [14]

Answer: The student is <u>not</u> correct

To reflect over the y axis, you use this rule

(x,y) \to (-x,y)

The x coordinate swaps in sign (from positive to negative, or vice versa) while the y coordinate stays the same.

So for a point like A(1,1), it should move to A ' (-1, 1) and not (-2,1) like the diagram shows.

B(3,1) should move to B ' (-3, 1)

C(1,4) should move to C ' (-1, 4)

It appears that the student applied a reflection over the y axis, and then they shifted the triangle 1 unit to the left.

8 0
3 years ago
Initially, 50 pounds of salt are dissolved in a large tank holding 300 gallons of water. A brine solution with a concentration o
kirill [66]

Answer:

dA / dt = 6 - A (t) / 100

600

Step-by-step explanation:

We have to:

dA / dt = In - Out

Input = input salt concentration * input rate of brine

replacing

Inlet = 2 lb / gal * 3 gal / min = 6 lb / min

there is no build up because the inlet flow equals the outlet, so there are 300 gallons in the tank at the start

Output: salt concentration at the output * output rate of brine

replacing

Output: A (t) / 300 * 3 gal / min = A (t) / 100

Thus:

dA / dt = 6 - A (t) / 100

this would be the differential equation.

now, when time tends to infinity, we would be left with:

100 * dA / dt = 600 - A (t)

When t tends to infinity, A (t) tends to 0, therefore, the amount of salt would be 600.

4 0
3 years ago
Will someone solve for X step by step please?
motikmotik
4(x-2)-3=9

<span>Reorder the terms:
4(-2 + x) + -3 = 9
</span><span>(-2 * 4 + x * 4) + -3 = 9
</span><span>(-8 + 4x) + -3 = 9
</span><span>Reorder the terms:
 -8 + -3 + 4x = 9
</span><span>Combine like terms:
-8 + -3 = -11
</span>-11 + 4x = 9 <span>Solving:
 -11 + 4x = 9
</span>Add '11' to each side of the equation.
-11 + 11 + 4x = 9 + 11
Combine like terms: -11 + 11 = 0
0 + 4x = 9 + 11
4x = 9 + 11
<span>Combine like terms:
9 + 11 = 20
4x = 20
</span><span>Divide each side by 4.
 
x = 5</span>

5 0
3 years ago
Read 2 more answers
A factory can make 3 x 104 t-shirts in one day.How many t-shirts will it make in 2.5 x 102 days?
Simora [160]

7.5 × 10 ^6

hope it helps!

6 0
3 years ago
Express 24 out of 80 as a percent
olga2289 [7]

Answer:

30%

Step-by-step explanation:

24/80 = 0.3

move the decimal over 2 times and you'll get your answer

6 0
3 years ago
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