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OLga [1]
3 years ago
14

James took a math quiz in which he earned 1 point for every correct answer and lost 0.5 points for every incorrect answer.James

answered 12 out of 18 questions correctly. What was James quiz score?
Mathematics
1 answer:
Nuetrik [128]3 years ago
4 0

Answer:

9

Step-by-step explanation:

6x0.5=3-12=9

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If -5x-y=1 is a true equation, what would be the value of 5(-5x-y)?
Tanzania [10]

Answer:

-25-5x-5y

Step-by-step explanation:

7 0
3 years ago
For what value of x do the expressions 2/3x + 2 and 4/3x -6 have the same value
Masteriza [31]
<h2>The value of x = - \dfrac{10}{3}</h2>

Step-by-step explanation:

The given expressiona are:

\dfrac{2}{3x+2} and \dfrac{4}{3x-6}

To find, the value of x = ?

∴  \dfrac{2}{3x+2}=\dfrac{4}{3x-6}

By crossmultiplication, we get

4(3x + 2) = 2(3x - 6)

⇒ 12x + 8 = 6x - 12

⇒ 12x - 6x =  - 12 - 8

⇒ 6x = - 20

⇒ 3x = - 10

⇒ x = - \dfrac{10}{3}

∴ The value of x = - \dfrac{10}{3}

Thus, the value of x is equal to - \dfrac{10}{3}.

5 0
3 years ago
Which type of rock results from melting and cooling of magma?
Levart [38]

Answer:

Igneous Rocks

Step-by-step explanation:

Alsooo this is Mathematics not science

6 0
2 years ago
Wht is the solutioin to the system of equations y = 4x – 10 y = 2
gtnhenbr [62]

Answer:

(3,2)

Step-by-step explanation:

I graphed the two lines using a graphing tool. The lines intercept at (3,2). Therefore, the solution to the system is (3,2).

7 0
3 years ago
-7 (-7)^-4 plz help plz
Natali5045456 [20]

Answer: -1/343

Step-by-step explanation:

-7(-7)^-4

First, re-write as positive exponents:

-7(-1/7^4)

Next, simplify:

-1/7^3 (you can simplify using exponent rules)

Simplify 7^3 :

7(7)(7)

49(7)

343.

Insert to original expression:

-1/343.

5 0
3 years ago
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