2 years ago

GUYS PLEASE HELP ME ASAP HELP ME HELP ME!!!!!

Mathematics

1 answer:

anygoal [31]2 years ago

5 0

Answer:

44+3x

Step-by-step explanation:

7^2+2^2-5-4+3x

Do exponents

49+4-5-4+3x

Do addition and subtraction from left to right

53-5-4+3x

48-4+3x

44+3x

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Tom brought a lawnmower on sale for 75. it was on sale for 75% of the original cost how much was original cost?

stepan [7]

Hey You!

This question is asking us, "75 is 75% of what number?"

75 × 100 / 75 = 100

The original cost was $100.

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2 years ago

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Emily has saved $6.75 and $4.25 from her lawn mowing jobs. How much more does she need to save to buy a CD that costs $15.95?

Roman55 [17]

$6.75 + $4.25 = $10.00
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3 years ago

I need help pls WILL GIVE BRAINLIEST

Alex73 [517]

Answer: (3,-2)

Step-by-step explanation:

$-3x-7y=5\\15x+6y=33$

$5(-3x-7y)=5(5)\\-15x-35y=25$

new system:

$-15x-35y=25\\15x+6y=33$

add.

$-29y=58\\y=-2$

plug in -2 for y

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$(3,-2)$

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1 year ago

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Which equation has the solutions x=1+/- 5?

nikitadnepr [17]

Answer:

$x^{2} -2x-4=0$

Solving Steps

Use the quadratic formula

$x=\frac{-(-2)(+/-)\sqrt{(-2)^2-4*1*(-4)} }{2*1}$

Multiply / Remove the parentheses / Evaluate

$x=\frac{2(+/-)\sqrt{4+16} }{2}$

Calculate

$x=\frac{2(+/-)\sqrt{20} }{2}$

Separate the solutions

$x=\frac{2(+/-)2\sqrt{5} }{2} \\x=\frac{2-2\sqrt{5} }2}$

Simplify

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2 years ago

What is the domain of the square root function graphed below?

Irina18 [472]

Answer:

Step-by-step explanation:

1. The domain is all x values for the function.

2. Since the line starts at the x value of 3, it is included and since it goes to the right, it also includes all the values greater than 3.

3. Therefore, x>_3

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2 years ago