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vfiekz [6]
2 years ago
10

Can someone help me this is middle school i have to use like a line .One batch of pink paint uses 2 cups of red paint and 7 cups

of white paint. Mai made a large amount of pink paint using 14 cups of red paint.
a.How many batches of pink paint did she make?
b.How many cups of white paint did she use?
Mathematics
2 answers:
ExtremeBDS [4]2 years ago
7 0
A) she made 7 batches of pink paint (2x7=14)
b) she used 49 cups of white paint (7x7=49)

Hope this helps!
Reika [66]2 years ago
4 0

Answer:

a.7 cups she used b.7 cups of white paint

Step-by-step explanation:

1 batch=2 cups so she use batches of pink paint

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Use the discriminant to determine the number of solutions to the quadratic equation 3x^2+5x=-1
kari74 [83]

Answer:

Two real distinct solutions

Step-by-step explanation:

Hi there!

<u>Background of the Discriminant</u>

The discriminant b^2-4ac applies to quadratic equations when they are organised in standard form: ax^2+bx+c=0.

All quadratic equations can be solved with the quadratic formula: x = \frac{{ - b \pm \sqrt {b^2 - 4ac} }}{{2a}}}.

When b^2-4ac is positive, it is possible to take its square root and end up with two real, distinct values of x.

When it is zero, we won't be taking the square root at all and we will end up with two real solutions that are equal, or just one solution.

When it is negative, it is impossible to take the square root and we will end up with two non-real solutions.

<u>Solving the Problem</u>

<u />3x^2+5x=-1<u />

We're given the above equation. It hasn't been organised completely in ax^2+bx+c=0, but we can change that by adding 1 to both sides to make the right side equal to 0:

3x^2+5x+1=0<u />

Now that we can identify the values of a, b and c, we can plug them into the discriminant:

D=b^2-4ac\\D=(5)^2-4(3)(1)\\D=25-4(3)(1)\\D=25-12\\D=13

Therefore, because the discriminant is positive, the equation has two real, distinct solutions.

I hope this helps!

4 0
2 years ago
.16 divided by .03220 round to the nearest tenth
vredina [299]

Answer:

Aosvsixixbs ss

Step-by-step explanation:

Hsbsisbdncofnsvzjzpzxkd9fnjd9dbdbdbd9sbd9ddbdjbdbd9sbs0ssnsidbx9sgzysvs8dvztdgz4sgaz1xhdgshs2zts3sts4wys5dhs6dud7rjd8rjr9rpeebeha1afa2sda3sfs4sgs5dgs6dhd7fhf8fjf9dhf10

6 0
2 years ago
Read 2 more answers
Please help :)))) ( attachment )
Anastaziya [24]
Let,
f(x) = -2x+34
g(x) = (-x/3) - 10
h(x) = -|3x|
k(x) = (x-2)^2

This is a trial and error type of problem (aka "guess and check"). There are 24 combinations to try out for each problem, so it might take a while. It turns out that 

g(h(k(f(15)))) = -6
f(k(g(h(8)))) = 2

So the order for part A should be: f, k, h, g
The order for part B should be: h, g, k f
note how I'm working from the right and moving left (working inside and moving out).


Here's proof of both claims

-----------------------------------------

Proof of Claim 1:

f(x) = -2x+34
f(15) = -2(15)+34
f(15) = 4
-----------------
k(x) = (x-2)^2
k(f(15)) = (f(15)-2)^2
k(f(15)) = (4-2)^2
k(f(15)) = 4
-----------------
h(x) = -|3x|
h(k(f(15))) = -|3*k(f(15))|
h(k(f(15))) = -|3*4|
h(k(f(15))) = -12
-----------------
g(x) = (-x/3) - 10
g(h(k(f(15))) ) = (-h(k(f(15))) /3) - 10
g(h(k(f(15))) ) = (-(-12) /3) - 10
g(h(k(f(15))) ) = -6

-----------------------------------------

Proof of Claim 2:

h(x) = -|3x|
h(8) = -|3*8|
h(8) = -24
---------------
g(x) = (-x/3) - 10
g(h(8)) = (-h(8)/3) - 10
g(h(8)) = (-(-24)/3) - 10
g(h(8)) = -2
---------------
k(x) = (x-2)^2
k(g(h(8))) = (g(h(8))-2)^2
k(g(h(8))) = (-2-2)^2
k(g(h(8))) = 16
---------------
f(x) = -2x+34
f(k(g(h(8))) ) = -2*(k(g(h(8))) )+34
f(k(g(h(8))) ) = -2*(16)+34
f(k(g(h(8))) ) = 2
5 0
3 years ago
What function below is the inverse of :
posledela

The second option is right, because inverse means opposite. And to get the opposite just flip it and you have your answer.

7 0
3 years ago
Read 2 more answers
Simplify.<br><br> 1/4y+1 1/2+2−1 3/4y−12
valina [46]

Answer:

2y+9 1/2

Step-by-step explanation:

the answer is 2y+9 1/2 because 1/4y+1 3/4y=2y and 1 1/2+2+ (-12) (12 is negative because its minus 12)=9 1/2 so the answer is 2y+9 1/2

4 0
2 years ago
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