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noname [10]
2 years ago
14

Plz help asap with explanation and will get the brilliant

Mathematics
2 answers:
Elina [12.6K]2 years ago
8 0
3x + y = -3
-2x + y = 7
Use elimination method
Subtract both equations
5x = -10, x = -2
Plug in -2 for x (any equation)
3(-2) + y = -3
-6 + y = -3
y = 3

Solution: x = -2, y = 3
Or as a coordinate: (-2, 3)
Lina20 [59]2 years ago
3 0

Answer:

(-2,3)

Step-by-step explanation:

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Find the GCF (greatest common factor) of 8 and 7.
FrozenT [24]

Answer: Its 1

Step-by-step explanation:

4 0
2 years ago
Evaluate the expression<br> 6a - 2b when a = 5, b=7
melomori [17]

6a - 2b

= 6(5) - 2(7)

= 30 - 14

= 16 answer

6 0
2 years ago
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D+7/−3=4 Please help me
butalik [34]

Answer:

19/3

Step-by-step explanation:

I looked it up on Papamath

3 0
2 years ago
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Ann is going on vacation. Ann dog food for a pet sitter to feed her dog Maggie while she's away she leaves 24 cans of wet food a
docker41 [41]
1/4x = 24 for cans
Multiply both sides by 4 (the multiplicative inverse of 1/4)
x = 96 days

3/4x = 38 for dry food
Multiply both sides by 4
3x = 152
x = 50.666667

So I would say Ann can be gone 50 days before Maggie runs out of food. I don’t think they would count the 2/3 of a day. She will run out of dry food before canned food.
3 0
2 years ago
1.2, 3, 7.5, 18.75, ...<br><br> Which formula can be used to describe the sequence?
Nady [450]

Answer:

The formula is:

a_n=1.2(\frac{5}{2})^{n-1}

Step-by-step explanation:

The geometric sequences are those in which the division between the terms a_{n + 1} and a_n of the sequence are equal to a constant common reason called "r"

The geometrics secencias have the following form:

a_n=a_1(r)^{n-1}

Where a_1 is the first term of the sequence

In this sequence we have the following terms

1.2, 3, 7.5, 18.75

Then notice that:

\frac{3}{1.2}=\frac{5}{2}\\\\\frac{7.5}{3}=\frac{5}{2}\\\\\frac{18.75}{7.5}=\frac{5}{2}

Then:

r=\frac{5}{2}  and a_1=1.2

Finally the formula is:

a_n=1.2(\frac{5}{2})^{n-1}

5 0
3 years ago
Read 2 more answers
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