3 years ago

For each calculation choose the correct answer written in standard form.

Mathematics

1 answer:

tangare [24]3 years ago

8 0

Answer:

Both the answers will be B

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Korolek [52]

When you rotate the ef counter lock 180 degrees, the new line e'f' will have the same length as ef.

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4 years ago

How many solutions does this linear system have?

gayaneshka [121]

Answer:

One solution: (2.5,0)

Step-by-step explanation:

We can use substitution for the solution. Substitute y=2x-5 to -8x-4y=-20 so that you end up with -8x-8x+20=-20. Next you want to add like terms which will be -16x+20=-20, next you want isolate x by subtracting 20 from both sides and leaves you with -16x=-40. Divide -16 on both sides to fully isolate x and will leave you with x=2.5. Now substiture in 2.5 for x in y=2x-5 to get y=2(2.5)-5 which will then lead to y=0.

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3 years ago

Ugh idkplease help ASAP

Travka [436]

12/23 = 0.5217 = 52%

7 0

3 years ago

The sum of two numbers is 80 If four times the smaller number is subtracted from the larger number, the result is 10. Find the t

timama [110]

This can be solved using a system of equations.
$\left \{ {{x+y=80} \atop {x-4y=10} \right. 
$
Subtract y from both sides.
$x=80-y$
Substitute:
$80-y-4y=80-5y=10$
Subtract 80 from both sides:
$5y=70$
Divide both sides by 5:
$y= \frac{70}{5} =14$
Substitute.
$x=80-14=66$

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3 years ago

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Jon places a dot on a coordinate plane at (-10,-4). he wants to place another across the y-axis and it must be 14 points away. W

lorasvet [3.4K]

The answer is (4,-4).

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3 years ago

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