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3 years ago

PLEASE HELP ME ITS ALREADY LATE AND ITS BRINGING MY GRADE WAY DOWN PLEASE HELP ME PLEASE!!!!

Mathematics

1 answer:

Anni [7]3 years ago

3 0

Answer:

I think a=15 and b=9

Step-by-step explanation:

I think that's it could be wrong

there we go ;)

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Is ham costs 650 per kg what will 500g cost

almond37 [142]

If it costs 650 per kg then 500g will cost half of that as 500g is half of a kg so the answer is 650/2 = 325

4 0

3 years ago

Find the quadratic function that fits curve below. Select the correct answer.

raketka [301]

<h2>Hello!</h2>

The answer is:

The quadratic function that fits the given picture is:

$y=-3x^{2}+13x-5$

We can solve the problem and find the correct function that fits the curve below by finding which function intercepts the y-axis at -5 (we can see it from the picture), also, we need to look for a function that represents a parabola opening upwards. We need to remember that when a parabola is opening upwards, its quadratic term coefficient is negative.

So, we can see that from the given functions, the only function that represents a parabola opening upwards and its y-intercept is located at y equal to -5 is the second option:

$y=-3x^{2}+13x-5$

We have that :

$a=-3(negative)\\b=13\\c=-5(y-intercept)$

We can see that the quadratic term (a) is negative, and the quadratic function intercepts the y-axis at y equal to -5.

Hence, the answer is:

The quadratic function that fits the given picture is:

$y=-3x^{2}+13x-5$

Have a nice day!

Note: I have attached a picture for better understanding.

4 0

3 years ago

The domain and range is?

Molodets [167]

Answer:

In inequality notation:

Domain: -1 ≤ x ≤ 3

Range: -4 ≤ x ≤ 0

In set-builder notation:

Domain: {x | -1 ≤ x ≤ 3 }

Range: {y | -4 ≤ x ≤ 0 }

In interval notation:

Domain: [-1, 3]

Range: [-4, 0]

Step-by-step explanation:

The domain is all the x-values of a relation.

The range is all the y-values of a relation.

In this example, we have an equation of a circle.

To find the domain of a relation, think about all the x-values the relation can be. In this example, the x-values of the relation start at the -1 line and end at the 3 line. The same can be said for the range, for the y-values of the relation start at the -4 line and end at the 0 line.

But what should our notation be? There are three ways to notate domain and range.

Inequality notation is the first notation you learn when dealing with problems like these. You would use an inequality to describe the values of x and y.

In inequality notation:

Domain: -1 ≤ x ≤ 3

Range: -4 ≤ x ≤ 0

Set-builder notation is VERY similar to inequality notation except for the fact that it has brackets and the variable in question.

In set-builder notation:

Domain: {x | -1 ≤ x ≤ 3 }

Range: {y | -4 ≤ x ≤ 0 }

Interval notation is another way of identifying domain and range. It is the idea of using the number lines of the inequalities of the domain and range, just in algebriac form. Note that [ and ] represent ≤ and ≥, while ( and ) represent < and >.

In interval notation:

Domain: [-1, 3]

Range: [-4, 0]

3 0

3 years ago

F the equation of a circle is (x + 4)2 + (y - 6)2 = 25, its radius is 5

BartSMP [9]

Yes the radius is 5. Is this a true or false question or is there something you forgot to add to it?

3 0

3 years ago

In the figure below, two secants are drawn to a circle from exterior point U. Suppose that UW=45, UZ=30, and UX=22.5. Find UY

Alex777 [14]

UY = 25

hope this answer helps you dear....take care!

if u have any doubt so feel free to ask!

3 0

2 years ago