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Svetradugi [14.3K]
3 years ago
10

​−8x+4y=24 ​−7x+7y=28 ​​ What is the solution?

Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
5 0
​−8x + 4y = 24 -- (1)
​−7x + 7y = 28 -- (2)

Eqn (1) & (2) are simplified as

y - 2x = 6 -- (3)
y - x = 4 -- (4)

By making y the subject of formula in (4), we have

y = x + 4 -- (5)

Substitute x + 4 for y in (3), then

x + 4 - 2x = 6
x - 2x = 6 - 4
- x = 2
x = - 2.

Substitute - 2 for x in (5), then

y = - 2 + 4
y = 2.

Therefore, (x, y) = (- 2, 2) ...Ans.
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Solve equation. What is the solution set<br> -4(z-2)+4=21-(z-3)
inessss [21]

Answer:

z=-75/17

Step-by-step explanation:

Expand this equation:

-4z+8+4=-21z-63

-4z+21z=-63-8-4

17z=-75

z=-75/17

8 0
3 years ago
Hello guys I really need help is anyone available please and ty
Diano4ka-milaya [45]

Answer:

6x5x5

Step-by-step explanation:

the square is a 5x5

and there are 6 of those squares

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4 0
3 years ago
Read 2 more answers
Multiply.
wolverine [178]
So you're initial equation is (2/6)*24=m. Well since 2/6=1/3, plug in 24 for the 1 in 1/3. So 24/3=m, and 24/3=8 so m=8.
7 0
3 years ago
A sunflower is 15 inches tall and grows 2 inches a week. How many weeks will it take for the
Zarrin [17]

Answer:

4 weeks

Step-by-step explanation:

15 + 2x = 23

2x = 8

x = 4

8 0
2 years ago
Can someone help idk if this is right
navik [9.2K]

Answer:

a_n=-3 \cdot a_{n-1}

a_1=2

You gave the explicit form.

Step-by-step explanation:

You gave the explicit form.

The recursive form is giving you a term in terms of previous terms of the sequence.

So the recursive form of a geometric sequence is a_n=r \cdot a_{n-1} and they also give a term of the sequence; like first term is such and such number. All this says is to get a term in the sequence you just multiply previous term by the common ratio.

r is the common ratio and can found by choosing a term and dividing by the term that is right before it.

So here r=-3 since all of these say that it does:

-54/18

18/-6

-6/2

If these quotients didn't match, then it wouldn't be geometric.

Anyways the recursive form for this geometric sequence is

a_n=-3 \cdot a_{n-1}

a_1=2

5 0
3 years ago
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