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pshichka [43]
3 years ago
8

Bernle got 15 out of 40 math problems correct on his test. What percent did he get correct?

Mathematics
1 answer:
svp [43]3 years ago
8 0

Answer:

37.5%

Step-by-step explanation:

15 (total number of correct answers)

divided by

40 (total questions)

\frac{15}{40}= 0.375

you now want to mltiply by 100

0.375 x 100

37.5

therefore Bernie has a percentage of 37.5% or when rounded, he has a 38%.

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Inverse equation t=120r/r+120 R=???
Komok [63]

9514 1404 393

Answer:

  r = 120t/(120-t)

Step-by-step explanation:

Multiply by the denominator, isolate r terms, then divide by the coefficient of r.

  t=\dfrac{120r}{r+120}\qquad\text{given}\\\\t(r+120)=120r\qquad\text{multiply by $(r+120)$}\\\\120t=120r-tr\qquad\text{subtract $tr$}\\\\\dfrac{120t}{120-t}=r\qquad\text{divide by the coefficient of $r$}\\\\\boxed{r=\dfrac{120t}{120-t}}

7 0
3 years ago
The coordinates of which point are (–3, –6)? On a coordinate plane, point A is (negative 3, 6), point B is (negative 6, negative
julia-pushkina [17]

Answer:

Point c

Step-by-step explanation:

3 0
3 years ago
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mrs_skeptik [129]

Step-by-step explanation:

John and his 3 friends decide to order food. The cost of one box of food is $x. If each boy purchases one box of food, what is the total cost? *z decreased by 3 as an algebraic expression is *How many terms does the following expression contain? 2x + 5y - 5State the value of 9x - 3y if x=2 and y=3 *State the constant in the expression: ab + 5 - 2c *

Your answer

State the variable in the expression: 5p + 3 *Tanya is n years old today. How old will she be in 5 years?16 more than thrice m as an algebraic expression is *State the coefficient in the expression: 3x - 7 *

Your answer

State the value of ab if a=3 and b=5 *State the value of 9x - 3y if x=2 and y=3 *John and his 3 friends decide to order food. The cost of one box of food is $x. If each boy purchases one box of food, what is the total cost? *Vertical jumpHead turning

6 0
3 years ago
What is a correct first step for solving this equation? <br><br> 2x−1(5−3x)=4x+2
MrRa [10]

The first step would be applying the distributive property.

2x - 1(5 - 3x) = 4x + 2

Distributive property.

2x - 5 + 3x = 4x + 2 is what the equation looks like after successfully applying the distributive property.

7 0
3 years ago
What is the value of the negative zero of the function g(x) = 3x2 + 14x – 5?
Flura [38]

here's the solution,

=》

3 {x}^{2}  + 14x  - 5

=》

3 {x}^{2}  + 15x - x - 5

=》

3x(x + 5) - 1(x  + 5)

=》

(3x  - 1)(x + 5)

so,

x =  \frac{1}{3} \:  or \: x =  - 5

and hence, it's negative zero is <u>-5</u>

5 0
3 years ago
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