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Sati [7]
3 years ago
7

Xander is taking a 5 question quiz worth 100 points. Each question is worth 20 points. Write an equation in function notation th

at represents his score for x number of questions answered correctly.
Mathematics
1 answer:
pashok25 [27]3 years ago
6 0
Add 100 +20 - 5 and the total is the resort
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The difference of two numbers is 16 the greater number is five less than four times a small number find the two numbers
Elis [28]

Answer:

The numbers are 23 and 7  

Step-by-step explanation:

1. Set up the equations

   Let x = the greater number

  and y = the smaller number. Then

(1) x - y = 16

       4y = 4 times the smaller number and

  4y - 5 = 5 less than 4 times the smaller number. Then

(2)     x = 4y - 5

You have a system of two equations:

\begin{cases}(1) & x - y = 16\\(2) & x = 4y - 5\end{cases}

2. Solve the equations

\begin{array}{lrcll}(3) & 4y - 5 - y & = & 16 &\text{Substituted (2) into (1)}\\& 3y - 5 & = & 16 &\text{Simplified}\\ & 3y & = & 21 &\text{Added 5 to each side}\\(4) &y & = & \mathbf{7} &\text{Divided each side by 3} \\& x - 7 & = & 16 & \text{Substituted (4) into (1)}\\& x& = & \mathbf{23} & \text{Added 7 to each side}\\\end{array}

The larger number is 23; the smaller number is 7.

3. Check

\begin{array}{rclcrcl}23 - 7& = & 16 & \qquad &23&=&4(7) - 5\\16 & = & 16 & \qquad &23& = &28 - 5\\&&& \qquad &23& = &23\\\end{array}

OK.

3 0
3 years ago
Rewrite in simplest rational exponent form x^1/2*X^1/4
jasenka [17]

Answer:

\sqrt[4]{x^3}

Step-by-step explanation:

First, let's examine our original statement.

x^{\frac{1}{2} }\cdot x^{\frac{1}{4}}

Using exponent rules, we know that if we have x^a \cdot x^b, then simplified, the answer will be equivalent to x^{a+b}.

So we can simplify this by adding the exponents \frac{1}{2} and \frac{1}{4}.

Converting  \frac{1}{2} into fourths gets us \frac{2}{4}.

\frac{2}{4} + \frac{1}{4} = \frac{3}{4}.

So we now have x^{\frac{3}{4}}.

When we have a number to a fraction power, it's the same thing as taking the denominator root of the base to the numerator power.

Basically, this becomes

\sqrt[4]{x^3}. (The numerator is what we raise x to the power of, the denominator is the root we take of that).

Hope this helped!

4 0
3 years ago
Read 2 more answers
Need help asap please !!!!!!!!
Dvinal [7]
The area of a parallelogram is base times height.

Multiply 16ft by 18ft.

(16)(18) = 288

The parallelogram is 288 ft².
5 0
3 years ago
Read 2 more answers
What's 2×2 equal please <br><br><br><br><br>(JOKE)
Daniel [21]
4 lol answering anyway
8 0
3 years ago
If f(x) =2x-6 then f(1)=​
marin [14]

Answer:

f(1) = -4

Step-by-step explanation:

Given that,

f(x) = 2x-6

We need to find the value of f(1).

Put x = 1 in the above expression.

f(1) = 2(1)-6

= 2-6

= -4

So, the value of f(1) is equal to -4.

7 0
3 years ago
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