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3 years ago

Which equation can be used to solve the problem? how many 8-gallon cans are needed to hold a total of 120 gallons of water?

Mathematics

1 answer:

alexdok [17]3 years ago

5 0

The answer would be D.
C=15
8x15=120

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20 POINTS!!!!!! AND BRAINLY Solve this problem.

lapo4ka [179]

Hello! And thank you for your question!

As we know she gets 24 paychecks. But there are only 12 months in a year. This must mean she gets 2 paychecks in one month.

2 x $863.50 =

= $1724

Final Answer:

$1724

5 0

3 years ago

Consider the function f(x)=-3x^2 +7x -k. [3 Marks] a) For what values of k will the function have no zeros? b) For what values o

Anna35 [415]

Answer: a) k >4.08

b) k = 4.08

c) k<4.08

Step-by-step explanation:

Since we have given that

$f(x)=-3x^2+7x-k$

a) For what values of k will the function have no zeros?

It mean it has no real zeroes i.e. Discriminant < 0

As we know that

$D=b^2-4ac$

Here, a =-3

b = 7

c = -k

So, it becomes,

$D$

b) For what values of k will the function have one zero?

It means it has one real root i.e equal roots.

So, in this case, D = 0

So, it becomes,

$D=b^2-4ac=0\\\\D=7^2-4\times -3\times -k=0\\\\49-12k=0\\\\49=12k\\\\k=\dfrac{49}{12}\\\\k=4.08$

c) For what values of k will the function have two zeros?

It means it has two real roots.

In this case, D>0

So, it becomes,

$D=7^2-4\times -3\times -k>0\\\\49-12k>0\\\\-12k>-49\\\\12k$

Hence, a) k >4.08

b) k = 4.08

c) k<4.08

3 0

3 years ago

41= 12d-7 solve for d

soldi70 [24.7K]

Answer:

d = 4

Step 1: Flip the equation.

Step 2: Add 7 to both sides.

Step 3: Divide both sides by 12.

4 0

2 years ago

(b) Her friend Hannah gets 70% of the 140 marks available in the exam.

Lisa [10]

$\huge\fbox{Answer ☘}$

number of marks available = 140

percentage secured = 70%

therefore marks secured =

$70\% \: \: of \: 140 \\\\ =>\frac{70}{100} \times 140 \\ \\ = > 98 \: marks$

hope helpful~

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2 years ago

Which of the following is a consequence of increasing variability? Group of answer choices A.The distance from one score to an

Irina-Kira [14]

Answer:

Step-by-step explanation:

The distance from one score to another tends to increase, and a single score tends to provide a less accurate representation of the entire distribution.

Consider normal distribution it has increasing trend from -Inf to the mean. But has no probability at any point. But if you consider binomial distribution then you will get the information at any integer of its range, but not all values of real line. That is you will not have information on (0,1) so there you cannot comment for increment of that distribution.

3 0

3 years ago

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