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OLga [1]
3 years ago
13

Need help with this question

Mathematics
2 answers:
gulaghasi [49]3 years ago
8 0

Answer:

bc=-4

Step-by-step explanation:

4x -1 is -4. because your adding a negative and a positive

nadya68 [22]3 years ago
6 0

Answer:

-4

Step-by-step explanation:

thats the answer

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Some one please help me with this problem. Thank you. NO answers, just explanation on how to solve it.
grandymaker [24]
Y = 3/2 t - 5/2 ; where t = 3

Substitute t by its value. the nearness of 3/2 to t denotes multiplication.

y = (3/2 *3) - 5/2

3 is a whole number. it is 3/1 in fraction form. 
In multiplying fractions, simply multiply the numerator and the denominator.

y = (3*3 / 2*1) - 5/2
y = 9/2 - 5/2

Subtracting fractions: We can only subtract or add fractions if they all have the same common denominator. Since both fractions have 2 as denominator, we can proceed to subtracting its numerators.

y = (9-5)/2      *subtract numerators and place over the common denominator
y = 4/2            * simplify the fraction.
y = 2/1 or 2
7 0
3 years ago
What is proportional and non proportional relationship
Rudik [331]
Proportional means that if one increases so does the other eg volume of a balloon increases if you heat it - heat is proportional to volume in gases.
Non proportional means that they don't have a similar relationship.
4 0
3 years ago
Read 2 more answers
Determine between which consecutive integers the real zeros of f(x) = 2x - 5x+1 are located.
LuckyWell [14K]

Answer:

between 0&1 and 2&3

Step-by-step explanation:

(Assuming that f(x) = 2x^2 - 5x + 1)

To solve this question we just need to find the zeros of the function f(x), and we do that by making f(x) = 0 and finding the values of x:

2x^2 - 5x + 1 = 0

Now we can use Bhaskara's formula:

Delta = b^2 - 4ac = 25 - 4*2 = 17

sqrt(Delta) = 4.12

x1 = (5 + 4.12) / 4 = 2.28

x2 = (5 - 4.12) / 4 = 0.22

the zero x1 = 2.28 is between 2 and 3, and the zero x2 = 0.22 is between 0 and 1, so the answer is 'between 0&1 and 2&3'

As the options A, B, C and D are not clear in the question text, you can just mark the option that has this result.

3 0
3 years ago
Evaluate:<br> - 9/5 -(-9/5)
Darya [45]
-9/5 -(-9/5) is has the value of 0.
7 0
4 years ago
Read 2 more answers
Four friends ordered a pizza.Christopher ate 1/5, Emma ate 0.27, and Jamie ate the rest.what percent did Jamie eat?
DENIUS [597]
Percent means parts out of 100

so
1/5=0.20
chris+em+jam=100%=1
0.20+0.27+jam=1
0.47+jam=1
minus 0.47 both sides
jam=0.53
jam=53/100
jam=53%

jamie ate 53%
7 0
4 years ago
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