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2 years ago

Can someone please help me with this

Mathematics

1 answer:

Jlenok [28]2 years ago

4 0

Answer:

y = 0.5x

Step-by-step explanation:

y = rx

4.5/9 = 0.5

7/14 = 0.5

15/30 = 0.5

y = 0.5x

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PLEASE HELP ME!! I AM HAVING SO MUCH PROBLEMS!!

kotykmax [81]

1) For a quadratic equation, we'll have two answers typically. We're looking for two numbers that when multiplied give -64, and when added give -12. This is a bit of trial and error, but you go about it by systematically factoring -64 in all possible combinations: 64=-2*32=2*-32=-4*16=4*-16=-8*8. Of these, I can 'see' that I can make -12 with 4 and -16. So the factorization of the equation becomes:

(x-16)(x+4)=0, so x=16 or x=-4.

Answers B and D are correct.

For (2), same trick applies. Rewrite as x²-8x-48=0. Factor as (x+4)(x-12)=0 because 4*-12=-48 and 4-12=-8. The other solution is x=12.

3 0

3 years ago

LenKa [72]

I'm going to take a guess regarding what you meant to type in:

<span>3x-9 X +6x+5
E(x)= ------- × -------------
2 2
X -9 X +5x+6

3(x+3) 6x+5
becomes E(x) = ----------- * ------------
x-9 5x+6

This cannot be reduced.

Try again to share this problem. Thank you.

</span>

7 0

4 years ago

Given y = 4x + 3, what effect does changing the equation to y = 4x - 3 have on the y-intercept?

Art [367]

Answer:

The y-intercept changes from (0, 3) to (0, -3)

Step-by-step explanation:

The y-intercept refers to the point where the graph of a function crosses or intersects with the y-axis. At this point, the value of x is usually 0.

Substitute x = 0 in both equations to determine how the y-intercept changes;

The original equation is given as y = 4x + 3,

when x = 0; y = 4(0) + 3 = 3

The y-intercept is thus (0, 3)

The new equation is given as y = 4x - 3

when x = 0; y = 4(0) - 3 = -3

The y-intercept is thus (0, -3)

Therefore, the y-intercept changes from (0, 3) to (0, -3)

3 0

4 years ago

Manuel made $6000 in taxable income last year. Suppose the income tax rate is 15% for the first $8500 plus 18% for the amount ov

bazaltina [42]

Answer:

the income tax paid for the last year is $900

Step-by-step explanation:

The computation of the income tax paid for the last year

Taxable income is $6,000

And, the 15% tax rate is charged for first $8,500

So the income tax paid is

= $6,000 × 15%

= $900

hence, the income tax paid for the last year is $900

The same is considered by doing the above calculation

3 0

3 years ago

Charlie used one and two thirds cups of walnuts and two and one sixth cups of cranberries to make breakfast bread.How many cups

quester [9]

Answer:

5/6 cups

Step-by-step explanation:

2/3 -walnuts

1/6-cranberries

2/3+1/6

common denominator-12

2/3 ·4/4=8/12

1/6 · 2/2= 2/12

8/12+2/12=10/12

10/12=5/6

6 0

3 years ago