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4vir4ik [10]
4 years ago
8

What is the value of the function y=2x−3 when x=−1 ?

Mathematics
2 answers:
san4es73 [151]4 years ago
7 0

Answer:  First option is correct.

Step-by-step explanation:

Since we have given that

y=2x-3

We need to find the value of the function .

As we have given that x= - 1

so, we substitute the value of x in y :

y=2x-3\\\\y=2(-1)-3\\\\y=-2-3\\\\y=-5

So, the value of the function is -5.

Hence, First option is correct.


Bad White [126]4 years ago
5 0

The answer is -5 I Just took the quiz

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Cuanto es un <br> feet en ce centimetros
r-ruslan [8.4K]
How much is 1 foot in 1 centimeters?
First we need to know:
1 foot = 12 inches
1 inch = 2.54 cm
Those are the things that we need to know beforehand.

Then, we can start converting.
= 1 ft * (12 in / 1 ft) * (2.54 cm / 1in)
= 30.48 cm

So 1 foot is just equal to 30.48 cm
4 0
3 years ago
What is unit rate for bottler of juice
diamong [38]
Hi,

To find a price of a single unit, you need to divide total with the amount of units 5.

20 \div 5 = 4

Single unit price (rate) is 4$.

Hope this helps.
If you have any questions about answer leave a comment below.

r3t40
8 0
4 years ago
Find the volume of the solid bounded by z = 2 - x2 - y2 and z = 1. Express your answer as a decimal rounded to the hundredths pl
butalik [34]

Answer:

The answer is "(\frac{\pi}{2})".

Step-by-step explanation:

z = 2 - x^2 - y^2.........(1) \\\\z = 1.............(2)  

Let add equation 1 and 2:

Using formula: x^2+y^2=1 \\\\

convert to polar coordinates

r=2

\theta \varepsilon (0=\pi)=z\\\\V=\int^{2\pi}_{\theta=0}\int^{1}_{\pi=0}\int^{z_{2}}_{z_1} r \ dr \d \theta\\\\

    =\int^{2\pi}_{0}\int^{1}_{0}  (Z_2-z_1)r  \ dr \d \theta\\\\=\int^{2\pi}_{0}\int^{1}_{0} 1- (-1-x^2-y^2) r \ dr \d \theta\\\\=\int^{2\pi}_{0}\int^{1}_{0} (+1 \pm r^2) r \ dr \d \theta\\\\=\int^{2\pi}_{0}\int^{1}_{0} (-r^3 + r)  \ dr \d \theta\\\\=\int^{2\pi}_{0} (-\frac{r^4}{4}+\frac{r^2}{1})^{1}_{0}  \d \theta\\\\=\int^{2\pi}_{0} (\frac{1}{4})  \d \theta\\\\=(\frac{2 \pi}{4}) \\\\=(\frac{\pi}{2}) \\\\

8 0
3 years ago
2 divided by 3 + 4 times 2
Stells [14]

Answer:

8.66666666666 (11)

Step-by-step explanation:

2 divided by 3 -.666666666666666

4 times 3 is 8

5 0
3 years ago
Read 2 more answers
The force pulling a truck downhill is 2,000N, the mass of the truck is 40,000 kg. What is the acceleration?
JulijaS [17]

For this case we have that Newton's second law is given by:

F = m * a

Where:

m: It's the mass

a: Acceleration

F: It's the force

According to the data we have:

2,000 = 40,000 * a

Dividing between 40,000 on both sides of the equation:

a = \frac {2,000} {40,000}\\a = 0.05

Thus, the acceleration is 0.05 \frac {m} {s ^ 2}

Answer:

0.05 \frac {m} {s ^ 2}

7 0
4 years ago
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