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vampirchik [111]
1 year ago
5

Can you help me with 4, 5, 6?I don't even know if number 4 is right.​

Mathematics
1 answer:
Lerok [7]1 year ago
4 0

Answer:

see explanation

Step-by-step explanation:

4

f(- 4) = means what is the value of f(x) when x = - 4

locate x = - 4 on the x- axis, go vertically down to the graph at (- 4, - 1 )

that is f(- 4) = - 1

5

f(1) means what is the value of f(x) when x = 1

locate x = 1 0n the x- axis, go vertically down to the graph at (1, - 2 )

that is f(1) = - 2

6

f(x) = - 4 means what is the value of x when f(x) = - 4

locate - 4 on the vertical axis, go across to the right to the graph at (4, - 4 )

that is when f(x ) = - 4 then x = 4

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.01mg is larger than .001g true or false
zloy xaker [14]

Answer

False

Step-by-step explanation:

3 0
3 years ago
Kyle works at a donut​ factory, where a​ 10-oz cup of coffee costs 95¢​, a​ 14-oz cup costs​ $1.15, and a​ 20-oz cup costs​ $1.5
Fynjy0 [20]

Answer:

Kyle filled 4 10-oz cups, 6 14-oz cups, and 4 20-oz cups.

Step-by-step explanation:

Let 10-oz, 14-oz, and 20-oz coffees be represented by the variables <em>a, b</em>, and <em>c</em>, respectively.

Since a total of 14 cups of coffee was served:

a+b+c=14

A total of 204 ounces of coffee was served. Therefore:

10a+14b+20c=204

A total of $16.70 was collected. Hence:

0.95a+1.15b+1.5c=16.7

This yields a triple system of equations. In order to solve a triple system, we should isolate the system to only two variables first.

From the first equation, let's subtract <em>a</em> and <em>b</em> from both sides:

c=14-a-b

Substitute this into both the second and third equations:

10a+14b+20(14-a-b)=204

And:

0.95a+1.15b+1.5(14-a-b)=16.7

In this way, we've successfully created a system of two equations, which can be more easily solved. Distribute:

For the Second Equation:

\displaystyle \begin{aligned} 10a+14b+280-20a-20b&=204\\ -10a-6b&=-76\\5a+3b&=38\end{aligned}

And for the Third:

\displaystyle \begin{aligned} 0.95a+1.15b+21-1.5a-1.5b&=16.7\\ -0.55a-0.35b&=-4.3\end{aligned}

We can solve this using substitution. From the second equation, isolate <em>a: </em>

<em />\displaystyle a=\frac{1}{5}(38-3b)=7.6-0.6b<em />

Substitute into the third:

-0.55(7.6-0.6b)-0.35b=-4.3

Distribute and simplify:

-4.18+0.33b-0.35b=-4.3

Therefore:

-0.02b=-0.12\Rightarrow b=6

Using the equation for <em>a: </em>

<em />a=7.6-0.6(6)=4<em />

<em />

And using the equation for <em>c: </em>

<em />c=14-(4)-(6)=14-10=4<em />

<em />

Therefore, Kyle filled 4 10-oz cups, 6 14-oz cups, and 4 20-oz cups.

7 0
2 years ago
Whats the answer to 8.4 + 0.18x = 0.32x
Sveta_85 [38]

Step-by-step explanation:

0.32x - 0.18x = 8.4 \\ 0.14x = 8.4 \\ x =  \frac{8.4}{0.14}  \\ x = 60

3 0
2 years ago
Indigo Depot is having a clearance sale of their fall items. A jacket that originally cost $120 before any discount is on sale f
Sauron [17]

Answer:

The final price is $66.

Step-by-step explanation:

This question can be solved by a rule of three.

The initial price was of $120.

Initially, there was a discount of 15%. Then, there is another discount on the initial price. So the total discount is of 15+30 = 45%.

So the final price will be 100-45 = 55% = 0.55 of the initial price.

So

$120 - 1

x - 0.55

x = 0.55*120 = 66

The final price is $66.

5 0
3 years ago
Mary had a 3-inch piece of ribbon. She cut it in half. How long were they new pieces
allochka39001 [22]

Answer:

1 and a half inches long

Because that 3 divided by 2 is 1.5.

7 0
3 years ago
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