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3 years ago

Pls help !!!!!!!!!! I need to get this question right

Mathematics

2 answers:

AnnyKZ [126]3 years ago

6 0

Answer:

Step-by-step explanation:

il63 [147K]3 years ago

4 0

Answer:

He didn't change the direction of the inequality when he divided both sides by -2.

Step-by-step explanation:

Let's go through each step and see.

First step: They distribute and they did so correctly. -4(x+8)=-4x-32.

Second step: They added 2x on both sides.

Third step: They added 32 on both sides.

Fourth step: The divide both sides by -2 correctly but since this is inequality you must flip the sign.

For example 3>2 but if you multiply both sides by -1 or divide both sides by -1 you get -3<-2.

You have to flip the sign whenever you multiply or divide both sides of inequality by negative number.

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A steel company is making flat rectangular frames as a part of a new product they are launching Each frame will be cut out of a

Basile [38]

Answer:

The problem has no real solution, because the area of inside of the frame is bigger than the total area of the frame.

Step-by-step explanation:

Any way here is the mathematical explanation/solve to this statement.

As show in the graphic, there is a representation of the situation stated in the problem. So in order to calculate the area we have the next equation as a function of x.

Area:

$A=b*h= (6+2x)(11+2x)\\\\A=28=66+12x+22x+4x^2}\\\\Simplifing\\\\4x^2+34x+38=0\\\\$

Solving the equation to find the roots (values of x):

$x=\frac{-b+- \sqrt{b^2-4ac} }{2a}=\frac{-34+-\sqrt{546} }{8} \\\\solving\\\\x=-7.2\\\\x=-1.3\\$

So mathematically there is no real answer, since x is a width must be positive number. And practically the outer area must be bigger than the inner area, and the inner area is given by 6 times 11, or 66 $cm^2$ .

8 0

3 years ago

What is divide 4860 in the ratio 5:4:3

NNADVOKAT [17]

Total portions are
5+4+3
12

One portion,
4860 / 12
405

So
5 : 4 : 3
5*405 : 4*405 : 3:405
2025 : 1620 : 1215

8 0

3 years ago

Two points on the line are (0, 4) and (7, 18). Use the points to first determine the slope and y-intercept. Then write the equat

Nadya [2.5K]

9514 1404 393

Answer:

a. m = 2; y intercept = (0, 4); y = 2 x + 4

Step-by-step explanation:

The slope can be found using the formula ...

m = (y2 -y1)/(x2 -x1)

m = (18 -4)/(7 -0) = 14/7

m = 2

The y-intercept is the first given point: (0, 4).

The equation for the line in slope-intercept form is

y = mx + b

Here, we have m=2 and b=4, so the equation is ...

y = 2x +4

6 0

3 years ago

Use the distributive property to remove the parentheses. -8(-v^[2]-3+6x^[3])

Kruka [31]

Answer:

8v^2+24-48x^3

Distribute the -8 to each term to get your answer.

Hope I helped!

6 0

4 years ago

Complete the table *easy math question*

Finger [1]

Answer:

4.0 40.0 0.4

0.6 6.0 0.06

0.08 0.8 0.008

Step-by-step explanation:

6 0

2 years ago