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Irina-Kira [14]
3 years ago
7

25. Save the simultaneous equations 2x-y=4;x+y=5​

Mathematics
1 answer:
Gnoma [55]3 years ago
8 0

Answer:

Step-by-step explanation:

2x-y=4 ..........(1)

x+y=5 ...........(2)

<u>Add equation 1 and 2:</u>

We get:

3x=9

x=9/3

x=3

Substitute value of x in (2):

x+y=5

3+y=5

y=5-3

y=2

(3,2)

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Need the answer been stuck on this
8090 [49]

Answer:

19 cm³

Step-by-step explanation:

The figure cam be decomposed into two cuboid.

✔️Dimension of cuboid 1:

L = 2 cm

W = 1 cm

H = 8 - 3 = 5 cm

Volume = L * W * H

Volume = 2*1*5 = 10 cm³

✔️Dimension of cuboid 2:

L = 3 cm

W = 1 cm

H = 3 cm

Volume = L*W*H = 3*1*3

Volume = 9 cm³

✅Volume of the irregular figure = 10 + 9 = 19 cm³

8 0
3 years ago
Which equation can be used to find the value of X
irakobra [83]

Answer:

Step-by-step explanation:

8 0
3 years ago
Total = $5.33 Tax rate = 8% How much was the item?
kow [346]

Answer:

42.64

Step-by-step explanation:

6 0
3 years ago
2. Translate the following equation into a verbal sentence. x + 5 = 2(7 + x)
Stells [14]

Answer:

G

Step-by-step explanation:

Some points to note

  • "is" means equal
  • "times" means multiplication
  • "quotient" means division
  • "sum" is addition

Now, let's look at the left side of the equation.

It is "x + 5"

This means the sum of the number x and 5, or the number x plus 5

It eliminates F and J

Now, let's look at right side of equation.

It is "2(7+x)"

"7+x" is in brackets, so this is the sum of 7 and x. Then it is multiplied by 2. Thus, we can say:

"2 times the sum of 7 and x"

From the choices G and H left, we select G to be correct.

5 0
4 years ago
(09.01 MC)
IRISSAK [1]

Answer:

<h2>Function 1 has the least minimum value and its coordinates are (2. - 7).</h2>

Step-by-step explanation:

The first function is

f(x)=2x^{2} -8x+1

The second function is

x   g(x)

-2    2

-1    -3

0     2

1     17

The vertex has coordinates of V(h,k), where h=-\frac{b}{2a} and k=f(h).

Let's find the vertex for the first function where a=2 and b=-8.

h=-\frac{-8}{2(2)}=2

k=f(2)=2(2)^{2} -8(2)+1=8-16+1=-8+1=-7

Therefore, the vertex of the first function is at (2,-7).

Now, the minimum value of the second function can be deducted from its table, which is (-1,-3).

Therefore, f(x) has -7 as minimum value and g(x) has -3 as minimum vale.

So, the right answer is B, because -7 is less than -3.

4 0
4 years ago
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