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just olya [345]
2 years ago
9

What is the value of the expression below? (3 1/2 - 9 3/4) ÷ (-2.5)

Mathematics
1 answer:
Alexandra [31]2 years ago
5 0

Answer:

2.5

Step-by-step explanation:

3 1/2 - 9 3/4 =

3 2/4 - 9 3/4 = -6 1/4

-6 1/4 = -6.25 ÷ (-2.5) = 2.5

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? Liter equivalent to 0,000 000 000 013 cubic kilometers
Amiraneli [1.4K]

<em><u>Question:</u></em>

? Liter equivalent to 0.000 000 000 013 cubic kilometers

How do we do it?´

<em><u>Answer:</u></em>

13 liter is equivalent to 0.000 000 000 013 cubic kilometers

<em><u>Solution:</u></em>

Given that,

? Liter equivalent to 0.000 000 000 013 cubic kilometers

So we have to convert cubic kilometer to liter

<em><u>Use the following conversion factor</u></em>

1\ km^3 = 1000000000000\ liter

Therefore,

0.000 000 000 013\ km^3 = 0.000 000 000 013 \times 1000000000000\ liter\\\\0.000 000 000 013\ km^3 = 13\ liter

Thus, 13 liter is equivalent to 0.000 000 000 013 cubic kilometers

7 0
3 years ago
I need help! Dilation with points on a grid!
ryzh [129]

Answer:

D'(-6,-4)

Step-by-step explanation:

When making this non rigid transformation about a point, keep in mind that a dilation by a certain scale factor can be represented by:

8 0
3 years ago
Read 2 more answers
Is this equation true? 1.2(2x-5)=2/5(2x-15)+1.6x
kobusy [5.1K]

Answer:

no, there is an infatuate amount of solutions

Step-by-step explanation:

1.2(2x-5)=2/5(2x-15)+1.6x

2.4x -6 = .8x -6 +1.6

2.4 -6 = 2.4-6

0=0 ( infatuate)

7 0
3 years ago
The table shows the relationship of how many pounds of cherries are needed to make a certain number of pies:
posledela

Answer:

C. A graph is drawn. The horizontal axis and vertical axis values are 0 to 70 in increments of 10. The horizontal axis label is Number of Pies, and the vertical axis label is Pounds of Cherries. Points are plotted on the ordered pairs 30, 20 and 45, 30 and 60, 40.

Step-by-step explanation:

If we take two of the original points from the data and put them in to two point form we get the following equation.

(6,4) and (12,8)

(y-4) = [(8-4)/(12-6)](x-6)

y = 2/3x

You have to start a the origin since we can only have enough ingredients to make pies and we can't start with partial pies. So move to y intercept up by 2.

Put the x values in for answer C and you'll return the y values.

6 0
2 years ago
How do you do these two questions?
nignag [31]

Step-by-step explanation:

(a) ∫₋ₒₒ°° f(x) dx

We can split this into three integrals:

= ∫₋ₒₒ⁻¹ f(x) dx + ∫₋₁¹ f(x) dx + ∫₁°° f(x) dx

Since the function is even (symmetrical about the y-axis), we can further simplify this as:

= ∫₋₁¹ f(x) dx + 2 ∫₁°° f(x) dx

The first integral is finite, so it converges.

For the second integral, we can use comparison test.

g(x) = e^(-½ x) is greater than f(x) = e^(-½ x²) for all x greater than 1.

We can show that g(x) converges:

∫₁°° e^(-½ x) dx = -2 e^(-½ x) |₁°° = -2 e^(-∞) − -2 e^(-½) = 0 + 2e^(-½).

Therefore, the smaller function f(x) also converges.

(b) The width of the intervals is:

Δx = (3 − -3) / 6 = 1

Evaluating the function at the beginning and end of each interval:

f(-3) = e^(-9/2)

f(-2) = e^(-2)

f(-1) = e^(-1/2)

f(0) = 1

f(1) = e^(-1/2)

f(2) = e^(-2)

f(3) = e^(-9/2)

Apply Simpson's rule:

S = Δx/3 [f(-3) + 4f(-2) + 2f(-1) + 4f(0) + 2f(1) + 4f(2) + f(3)]

S ≈ 2.5103

5 0
3 years ago
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