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sammy [17]
2 years ago
12

Hi its nice to meet you

Mathematics
2 answers:
klio [65]2 years ago
8 0

Answer:

19.5

Step-by-step explanation:

165 divided by 8 is 19.5

ValentinkaMS [17]2 years ago
7 0

Answer:

just for the points and maybe the one above me can get branlist

Step-by-step explanation:

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Mitchell drew 56 pictures. Rafi drew p fewer pictures than Mitchell. Write an expression that shows how many pictures Rafi drew.
Angelina_Jolie [31]
This would be 56 - p because 'fewer' indicates subtraction.
8 0
3 years ago
Anyone can help me solve this equation using cross multiplying
Natali5045456 [20]

9514 1404 393

Answer:

  x = 1 or 5

Step-by-step explanation:

The notion of "cross-multiplying" is the idea that the numerator on the left is multiplied by the denominator on the right, and the numerator on the right is multiplied by the denominator on the left. This looks like ...

  \displaystyle \frac{x-1}{7}=\frac{2x-2}{3x-1}\ \longrightarrow\ (x-1)(3x-1)=(7)(2x-2)

Then the solution proceeds by eliminating parentheses, and solving the resulting quadratic equation.

  3x^2-4x+1=14x-14\\\\3x^2-18x+15=0\qquad\text{subtract $14x-14$}\\\\x^2-6x+5=0 \qquad\text{divide by 3}\\\\(x-1)(x-5)=0\qquad\text{factor}\\\\x\in\{1,5\}

_____

<em>Comment on "cross multiply"</em>

Like a lot of instructions in Algebra courses, the idea of "cross multiply" describes <em>what the result looks like</em>. It doesn't adequately describe how you get there. The <em>one and only rule</em> in solving Algebra problems is "<em>whatever is done to one side of the equation must also be done to the other side of the equation</em>." If you multiply one side by one thing and the other side by a different thing, you are violating this rule.

What looks like "cross multiply" is really "<em>multiply by the product of the denominators</em> and cancel like terms from numerator and denominator." Here's what that looks like with the intermediate steps added.

  \displaystyle \frac{x-1}{7}=\frac{2x-2}{3x-1}\\\\\frac{x-1}{7}\times7(3x-1)=\frac{2x-2}{3x-1}\times7(3x-1)\\\\(x-1)(3x-1)=(2x-2)(7)\qquad\textit{looks like}\text{ cross multiply}

8 0
2 years ago
What is the expression 42+13+9 in factored form
NeX [460]

Answer:

64

Step-by-step explanation:

7 0
2 years ago
With the information given, can you prove this quadrilateral is a parallelogram?
jok3333 [9.3K]
Opposite sides are congruent and have the same slope.
6 0
2 years ago
The tour costs £359 per person. You have to pay a deposit of £78 in advance. How much more do you need to pay
dimaraw [331]
The cost of the tour= £359.

The deposit is just an initial pay, which is a part payment of the total cost

If you pay a deposit of £78 out of £359, Then you need to subtract £78 from £359 to obtain,

359-78=281 pounds.

Therefore you need to pay £281 more.
4 0
3 years ago
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