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olga_2 [115]
2 years ago
8

Question -4x - 9 = -13?

Mathematics
1 answer:
olganol [36]2 years ago
8 0

<em>X= 1.</em>

<em>For this expression to be correct, you would have to make sure that -4 stays -4. Any negative number subtracted by a positive number makes it go farther down into the negatives as a result even if the 9 is positive.</em>

<em>Hope this helps and have a nice day.</em>

<em>-R3TR0 Z3R0</em>

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Which probability distribution table corresponds with this frequency distribution table
nlexa [21]

Answer:

A.

\begin{array}{cccccc}x&1&2&3&4&5\\f&0.2&0.3&0.05&0.2&0.25\end{array}

Step-by-step explanation:

First find the sum

\sum f=4+6+1+4+5=20.

Now, find the probabilities:

  • Pr(x=1)=\dfrac{4}{20}=\dfrac{1}{5}=0.2;
  • Pr(x=2)=\dfrac{6}{20}=\dfrac{3}{10}=0.3;
  • Pr(x=3)=\dfrac{1}{20}=0.05;
  • Pr(x=4)=\dfrac{4}{20}=\dfrac{1}{5}=0.2;
  • Pr(x=5)=\dfrac{5}{20}=\dfrac{1}{4}=0.25.

Hence, the frequency distribution table is

\begin{array}{cccccc}x&1&2&3&4&5\\f&0.2&0.3&0.05&0.2&0.25\end{array}

4 0
3 years ago
Simplify 10 divided by 7 divided by 8 and put it in a fraction please :)
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Answer:5/28

Step-by-step explanation:

3 0
2 years ago
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Find the slope and the y-intercept of the line. 4x-5y=5
Evgen [1.6K]

Answer:

Step-by-step explanation:

4x - 5y= 5

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3 years ago
What are the factors of
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Step 1: Trying to factor as a Difference of Squares:

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Theory : A difference of two perfect squares,  A² - B²  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

A² - AB + BA - B² =

A²  - AB + AB - B²

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Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check : 1 is the square of 1

Check: x²⁰⁰²  is the square of  x¹⁰⁰¹

Factorization is :       (x¹⁰⁰¹ + 1) × (x¹⁰⁰¹ - 1)

7 0
2 years ago
Which are samples that are appropriate to survey regarding how the city’s residents feel about building a new youth center? Sele
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Answer:

it is 2, 4, AND 5:)

Step-by-step explanation:

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