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krek1111 [17]
2 years ago
12

2х + 7y = 1 2х - 4y = 12

Mathematics
1 answer:
solong [7]2 years ago
6 0

Answer:

What is the question or only

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James invest some money into an account that pays 4% compounded annually if the account is $851.66 after five years how much do
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Your moma

Step-by-step explanation:

8 0
3 years ago
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A student answered 86 problems on a test correctly and received a grade of 98%. How many problems were on the test, if all the p
balu736 [363]

Answer:

88 problems

Step-by-step explanation:

Set this problem up as fractions

86/x = 98/100

Cross multiply

86 × 100 = x × 98

8600 = 98x

Divide both sides by 98

87.75... = x

Round to nearest whole number

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The blue dot is at what value on the number line?
EastWind [94]
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3 years ago
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How many solutions does the system have?
amid [387]

Answer:

A; infinitely many solutions

Step-by-step explanation:

first, let's simplify the first equation to make it simpler.

divide both sides by 5

y=3x-8

new system

y=3x-8

y=3x-8

as you can see, they are the same.

not mandatory but useful!⬇⬇⬇⬇

just to be more clear, let's substitute them. since they're both already in y=, we can make them both set to each other.

3x-8=3x-8

add 8 to both sides; subtract 3x from one side

0=0

the answer is A, Infinitely many solutions.

hope this helped <3333333

8 0
3 years ago
Evaluate: -0.7 - (-2.6 + -0.8) + 7.1
SpyIntel [72]

Answer:

8.36

Step-by-step explanation:

-0.7-(-2.6+ -0.8) +7.1\\  (add inside the parenthesis)\\\\-0.7 - 3.4 + 7.1\\\\=8.36

3 0
3 years ago
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