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2 years ago

13

at the beginning of a chemistry experiment the volume of liquid in a container was 4 milliliters. during the experiment the volu

me dropped to 3 millimeters. find the percent of decrease

1 answer:

Mrac [35]2 years ago

3 0

Answer:

2.0

Step-by-step explanation:

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How will rational numbers help in future

allochka39001 [22]

Answer:

They are used to share something among friends , Like if there are four friends and they want to divide a cake equally among themselves , then the quantity of cake that each friend will get will be one-fourth of the cake , That is a rational number 1/4.

Step-by-step explanation:

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2 years ago

Mattie uses the discriminant to determine the number of zeros the quadratic equation 0 = 3x2 – 7x + 4 has. Which best describes

vaieri [72.5K]

Answer: 2 real zeros

discriminant: b^2 - 4ac
a = 3, b = -7, and c = 4
so, (-7)^2 - 4(3)(4) = 1
Since the discriminant is positive, there are 2 real zeros, if the discriminant was negative there would be 2 complex zeros, and if the discriminant equaled 0 then there is one real answer

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2 years ago

Read 2 more answers

What equation represents the line that passes through points (1.-5) and (3 -17)?

zzz [600]

ALL LINES CAN BE REPRESENTED IN THE FORM $f(x) = ax+b$ .

We know that:

$f(1) = -5 \implies a\cdot(1)+b = -5 \implies a+b = -5$

and

$f(3) = -17 \implies a\cdot(3) +b = -17 \implies 3a+b = 17$

Observe that:

$3a+b = 2a+a+b = 2a+(a+b)$

So:

$2a+(a+b) =-17$

But we know that $a+b = -5$ , so:

$2a+(a+b) =-17$

$2a+(-5) = -17$

$2a = -12$

$a = -6$

Since:

$a+b = -5$

$(-6)+b = -5$

$b = 1$

So the line is:

$f(x) = 1-6x$

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3 years ago

Solve the inequality.<br><br>2(4+2x)>5х+5<br> x<-2<br> x>-2<br>х<3<br>x>3

olga_2 [115]

Answer:

x<3

Step-by-step explanation:

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2 years ago

A fair coin is flipped four times. Find the probability that exactly two of the flips will turn up as heads.

velikii [3]

Answer:

%50 if will be on heads twice

Step-by-step explanation:

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2 years ago