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Daniel [21]
3 years ago
5

12-2x^2/-5x where x=-4

Mathematics
1 answer:
Viktor [21]3 years ago
7 0

Answer:

10.4

Step-by-step explanation:

to simply solve the expression we will  insert the known value of x into the expression and evaluate.

12-2x^2/-5x

12 - 2x²/-5x given that x = -4

= 12 - 2 (-4)²/ -5(-4)

= 12 - 2(16)/ 20

= 12 -32/20

don't forget to the BODMAS rule

B...................... bracket

O................. of

D..........................................division

M................................ multiplication

A................................ addition

S.................................. subtraction

so we have,

12 - 32/20

12 - 8/5

find the lcm

60 - 8/5

52/5

10.4

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What is the range and domain of this question? im unsure​
Naya [18.7K]

Answer:

Step-by-step explanation:

Domain is the independent variable (x)

Range is the dependent variable (y)

For each of these you would just put what x and y are equal to

For the Domain you would put:

0<=x<=3

<= is less than or equal to

For the Range you would put

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6 0
3 years ago
Rhian sat a maths test and an English test In the Maths test she scored 14 out of 17 In the English test she scored 31 out of 39
BabaBlast [244]

Answer:

Rhian did better in the Math test.  

Step-by-step explanation:

Given: Rhian scored 14 out of 17 in a Math test. In the English test she scored 31 out of 39.

To find: In which test did she do better?

Solution:

We have,

Rhian scored 14 out of 17 in a Math test.

Rhian scored 31 out of 39 in an English test.

So, first we need to find the percentage of the marks scored.

Percentage in the Math test =\frac{14}{17}\times100=82.35 \%.

Percentage in the English test =\frac{31}{39}\times100= 79.49\%.    

Clearly, the percentage in the Math test is greater than the percentage in the English test.

So, Rhian did better in the Math test.    

8 0
3 years ago
Number A is 5342. Number B is 11124 greater than A. Number C is 3104 less than B. What is the total value of numbers A,B and C?
Leni [432]

Answer:

B - 16466

C - 13362

total value - 35170

Step-by-step explanation:

to find B add 11124 to 5342 (11124+5342=16466)

to find C subtract 3104 from 16466 (16466-3104=13362)

total value - add them all together

5 0
3 years ago
Evelyn bought 8.4 gallons of gas for $23.94. Which equation can be used to determine the price of each gallon of gas? 8.4x = 23.
adoni [48]

Answer:

the equation would be

8.4x = 23.94

Step-by-step explanation:

Let the price of each gallon of gas is $x.

And we have been given that 8.4 gallons of gas for $23.94.

So, we can make the below proportion

Cross multiplying, we get

Hence, the equation that can be used to determine the price of each gallon of gas is

pls mark as brainliest

8 0
3 years ago
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8. Jordan has $11.40 to spend at the used book store. Each book costs $280. How many books can Jordan buy?​
inysia [295]

Answer:

0

Step-by-step explanation:

Jordan hasn't got enough money to buy any books, as $11.40<$280.

7 0
2 years ago
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