3 years ago

Give brailist but help me fast

Mathematics

1 answer:

gtnhenbr [62]3 years ago

4 0

Answer:

76.7

Step-by-step explanation:

11.3(3) + 10.7(4) = __ + 42.8

Multiply values

33.9 + 42.8 = __ + 42.8

The missing value is 33.9!

42.8 + 33.9 = 76.7

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A line goes through the points (4, 5) and (2, -6). Write the equation of the line in slope-intercept form.

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3/4 & 1/-3 would be the answer

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2 years ago

Given the function f(x)=x+5-1 choose the correct domain

ElenaW [278]

Answer:

The domain of the function is all real numbers.

Step-by-step explanation:

I graphed the function on the graph below.

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3 years ago

Substitute the values for a, b, and c into b2 – 4ac to determine the discriminant. Which quadratic equations will have two real

hoa [83]

Answer: $0=2x^2-7x-9\\0=4x^2-3x-1\\0=x^2-2x-8$

Step-by-step explanation:

We know that the standard quadratic equation is ax^2+bx+c=0

Let's compare all the given equation to it and , find discriminant.

1. a=2, b= -7, c=-9

$b^2-4ac=(-7)^2-4(2)(-9)=49+72>0$

So it has 2 real number solutions.

2. a=1, b=-4, c=4

$b^2-4ac=(-4)^2-4(1)(4)=16-16=0$

So it has only 1 real number solution.

3. a=4, b=-3, c=-1

$b^2-4ac=(-3)^2-4(4)(-1)=9+16=25>0$

So it has 2 real number solutions.

4. a=1, b=-2, c=-8

$b^2-4ac=(-2)^2-4(1)(-8)=4+32=36>0$

So it has 2 real number solutions.

5. a=3, b=5, c=3

$b^2-4ac=(5)^2-4(3)(3)=25-36=-9$

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2 years ago

Read 2 more answers

Lesson 3.2 percent increase and decrease

sp2606 [1]

What is the question you are asking and no one is gonna know what lesson 3.2 means.

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2 years ago

masons cell phone company charges $0.12 for every text message he sends plus $2.50 per month if mason sent 25 messages this mont

klemol [59]

Answer:

The answer would be $5.5

Step-by-step explanation:

First, multiply $0.12 by 25 to get $3. Add the $3 to $2.50 to get your answer of $5.5

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3 years ago