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meriva
3 years ago
15

Find the zeros of the quadratic function: y = 6(7x + 9)(8x – 3)

Mathematics
2 answers:
Advocard [28]3 years ago
8 0

Answer:

hello :- 9/7 and 3/8

Step-by-step explanation:

y = 6(7x + 9)(8x – 3)

y=0 means :   7x+9=0   or 8x-3=0

7x = -9  or 8x=3

x= - 9/7   or x= 3/8

Westkost [7]3 years ago
6 0

Answer:

-9/7, 3/8

Step-by-step explanation:

The zeroes can be found in the parenthesis.

You need to set each parenthesis to zero first.

7x+9=0

subtract 9

7x=-9

divide 7

x=-9/7

For 8x-3=0

add the 3

8x=3

divide the 8

x=3/8

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Approximate √60 to the nearest tenth with step by step directions please! And thanks!
MA_775_DIABLO [31]

Answer:

7.7 is the answer

Step-by-step explanation:

(credit to manics.info)

Step 1:

Calculate the square root of 60 to be:

√60 = 7.74596669241483

Step 2:

Reduce the tail of the answer above to two numbers after the decimal point:

7.74

Step 3:

Round 7.74 so you only have one digit after the decimal point to get the answer:

7.7

To check that the answer is correct, use your calculator to confirm that 7.72 is about 60.

Hope this help and have a great day!

7 0
3 years ago
Determine whether each of these sets is countable or uncountable. For those that are countably infinite, exhibit a one-to-one co
iragen [17]

Answer:

Solution to determine whether each of these sets is countable or uncountable

Step-by-step explanation:

If A is countable then there exists an injective mapping f : A → Z+ which, for any S ⊆ A gives an injective mapping g : S → Z+ thereby establishing that S is countable. The contrapositive of this is: if a set is not countable then any superset is not countable.  

(a) The rational numbers are countable (done in class) and this is a subset of the rational. Hence this set is also countable.  

(b) this set is not countable. For contradiction suppose the elements of this set in (0,1) are enumerable. As in the diagonalization argument done in class we construct a number, r, in (0,1) whose decimal representation has as its i th digit (after the decimal) a digit different from the i th digit (after the decimal) of the i th number in the enumeration. Note that r can be constructed so that it does not have a 0 in its representation. Further, by construction r is different from all the other numbers in the enumeration thus yielding a contradiction

3 0
3 years ago
What is an equation of the line that passes through the points (-1, -6) and (6, 1)?
Agata [3.3K]

Answer:

Step-by-step explanation:

It is vital  to first find the gradient/ slope between the points

m=\frac{y2-y1}{x2-x1} \\=\frac{1-(-6)}{6-(-1})\\ \\m=1

let us use the point (6,1) to find the value of c

y=mx+c

1=1(6)+c

1-6=c

∴c=-5

the equation is given by

y=x-5

8 0
1 year ago
Read 2 more answers
Length of an equilateral triangle with side root3
Sever21 [200]

Answer:

√3/4(√3)^2=3√3/4

Hope it helps

5 0
3 years ago
Please show work. Thanks​
3241004551 [841]

Answer:

625

Step-by-step explanation:

So it says its off by 25%, so we have to do 25% of 2500, we get 625 :D

4 0
3 years ago
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