3 years ago

Try and answer these multiple questions again and I will try to give you brainiest. Good Luck!

Mathematics

2 answers:

IrinaK [193]3 years ago

6 0

Answer: 9: c , 10: a ,11 :d 12: a

Step-by-step explanation:

vazorg [7]3 years ago

6 0

9c 10a 11 d 12 a.
I hope this helps you

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Carly solved a quadratic equation by completing the square, but her work has errors. Identify the first error in Carly's work.

Savatey [412]

Answer:

Her first error was adding the wrong number to both sides. Instead of 4², it should be 2²

Step-by-step explanation:

When completing the square, the number that needs to be added to both sides is (b/2)²

In this problem, b is 4. So, Carly should have added 2² to both sides, but she added 4² instead.

So, her first error was adding 4² to both sides instead of 2²

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BabaBlast [244]

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Given 3x + y =17 and x+3y = -1 find the value of 3x + 3y

Phoenix [80]

3x+y=17
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Again, x+3y=-1
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3 years ago

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Find the slope of the line 7x-4y=10

Harman [31]

Answer:

The slope is $m=(7/4)$

Step-by-step explanation:

we know that

The equation of the line into slope intercept form is equal to

$y=mx+b$

where

m is the slope

b is the y-coordinate of the y-intercept

In this problem we have

$7x-4y=10$

Convert to slope intercept form

Isolate the variable y

$4y=7x-10$

$y=(7/4)x-(10/4)$

$y=(7/4)x-(5/2)$

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3 years ago

Simplify the expression <br> -7(-9 + 3t)

Tems11 [23]

1. -7×3t−7×−9
2. -21t−7×−9
3. -21t−(−63)

Answer:
-21t + 63

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