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2 years ago

10

X^2+19=10 solve algebraically 4x^2+3=43 solve algebraically

1 answer:

raketka [301]2 years ago

8 0

The correct answer is B

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in order to make 5 dozen chocolate chip cookies, I need to use 2 cups of sugar. (a) complete the table, then use the table to dr

sergejj [24]

Answer:

sugar| cookies

(cups) | (dozens)

1 | 2.5

2 | 5

3 | 7.5

4 | 10

Goes up by 2.5 each time

Not sure if this is what you want

Step-by-step explanation:

equation is y = 2.5x

4 0

2 years ago

Please help me on this problem

Anna71 [15]

Answer:

The pairs of integer having two real solution for $ax^{2} -6x+c = 0$ are

$a = -4, c = 5$
$a = 1, c = 6$
$a = 2, c = 3$
$a = 3, c = 3$

Step-by-step explanation:

Given

$ax^{2} -6x+c = 0$

Now we will solve the equation by putting all the 6 pairs so we get the following

$-3x^{2} -6x-5 = 0$ for $a = -3 , c=-5$

$-4x^{2} -6x+5 = 0$ for $a = -4 , c=5$

$1x^{2} -6x+6 = 0$ for $a = 1 , c=6$

$2x^{2} -6x+3 = 0$ for $a = 2 , c=3$

$3x^{2} -6x+3 = 0$ for $a = 3 , c=3$

$5x^{2} -6x+4 = 0$ for $a = 5 , c=4$

The above all are Quadratic equations inn general form $ax^{2} +bx+c=0$

where we have a,b and c constant values

So for a real Solution we must have

$Disciminant , b^{2} -4\timesa\timesc \geq 0$

for $a = -3 , c=-5$ we have

$Discriminant =-24$ which is less than 0 ∴ not a real solution.

for $a = -4 , c=5$ we have

$Discriminant = 116$ which is greater than 0 ∴ a real solution.

for $a = 1 , c=6$ we have

$Discriminant =12$ which is greater than 0 ∴ a real solution.

for $a = 2 , c=3$ we have

$Discriminant =12$ which is greater than 0 ∴ a real solution.

for $a = 3 , c=3$ we have

$Discriminant =0$ which is equal to 0 ∴ a real solution.

for $a = 5 , c=4$ we have

$Discriminant =-44$ which is less than 0 ∴ not a real solution.

7 0

3 years ago

The angle 0 lies in quadrant 1. sin 0=2/5 what is cos 0?

BaLLatris [955]

Answer:

√21/5

Step-by-step explanation:

Took the quiz:D (that’s a fraction btw)

7 0

2 years ago

Solve for x x=750+125.75x

olga2289 [7]

X=750+125.75x
subtract to variable (x) on one side
x-125.75x=750+125.75x-125.75x
-124.75x=750
divide -124.75 to get variable (x) by itself
-124.75x/-124.75=750/-124.75
x=-3000/499
or
x=-6 6/499
or
x=-6.01202

7 0

2 years ago

Write a percent that has a value between the two decimals 0.4 and 0.5

Juliette [100K]

A percent would be 0.45

5 0

3 years ago