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3 years ago

Plssssssssssssssssssssssss

Mathematics

2 answers:

bazaltina [42]3 years ago

7 0

Answer:

The answer is equal to 0

Step-by-step explanation:

Explanation in the picture.

GREYUIT [131]3 years ago

6 0

Y = x^2 -3

y = (x-3)(x+3)

For x-intercepts, y = 0

Therefore (x-3)(x+3) = 0

x intercepts are (3,0) and (-3,0)

The line of symmetry is x = 3+(-3) = 0

Vertex is on the line of symmetry

When x = 0, y = -1

Vertex = (0,-1)

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What is the average rate of change over the interval (-3,2) on a graph

Dmitry_Shevchenko [17]

Answer:

the question is invalid because you need two points to find the slope lol

Step-by-step explanation:

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3 years ago

Henry and Gavin are marking exam papers. Each set takes Henry 47 minutes and Gavin 1 hour. Express the times Henry and Gavin tak

gayaneshka [121]

Answer:

2 : 3

Step-by-step explanation:

Henry = 40 min

Gavin = 1 hr = 60 min

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3 years ago

how many liters of a 40% acid solution must be added to 12 liters of a 20% solution to obtain a 25% solution

kkurt [141]

Answer:

The answer is 4 liters.

Step-by-step explanation:

We want a final 25% solution, which means that the solvent should constitute 25 percent of all the liters of solution.

Let us call $x$ the litres of 40% solution, so when they are added to the 12 litres of 20% solution, the total litres of the new solution are:

$x+12$

of these liters, 25% must be the solvent:

$N=0.25(x+12)$

Now for the 40% solution, the liters of the solvent are $0.4x$ , and for the 20% liter solution, the liters of solve are $0.2*12=2.4$ liters. Thus the total liters $N$ of the solvent are

$N=0.4x+2.4$

Therefore

$N=0.4x+2.4=0.25(x+12)$

$\therefore x=4\:litres$

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3 years ago

How do you determine where an irrational number is located on a number line

zmey [24]

Answer:

Step-by-step explanation:

The square root of 2 is irrational, the square root of 3, 5, 6, 7, 8, 10, and any other positive number that is not a perfect square. You can find more by dividing an integer by an irrational number. (5 / sqr rt of 2...)

There are more irrational numbers than there are rational numbers. There are aleph-null rational numbers and aleph-one irrational numbers. (Aleph-null is the smallest size of infinity, aleph-one is the second size.)

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3 years ago

Please help me asap!!!!!!!

mojhsa [17]

Answer:

588

Step-by-step explanation:

Formula for area of parallelogram is just base x height, so you do 28*21 and you get 588.

hope that helped :)

7 0

2 years ago

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