ANSWER ASAP WILL MARK BRAINLIEST

Mathematics

2 answers:

olya-2409 [2.1K]2 years ago

3 0

Use substitution to help you

avanturin [10]2 years ago

3 0

The answer would be: y=x-3

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Which function is equivalent to h(x)=10x2+9x-1?

jolli1 [7]

Answer:

i think the answer is c

Step-by-step explanation:

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3 years ago

Solve the equation for a.

Pavel [41]

Answer:

$\large\boxed{a=\dfrac{K}{4+9b}}$

Step-by-step explanation:

$K=4a+9ab\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\K=a(4+9b)\qquad\text{divide both sides by}\ (4+9b)\neq0\\\\\dfrac{K}{(4+9b)}=\dfrac{a(4+9b)}{(4+9b)}\\\\\dfrac{K}{4+9b}=a$

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3 years ago

Read 2 more answers

Solve the following word problem using any method. Show your work.

VLD [36.1K]

Let's set up two equations:
x+y=20 We know she brought total of 20, some of each so x=small y=big
20x+ 30y=450

x+y= 20
-y -y
------------
x= 20 -y

substitute into the other equation:
20 (20-y) + 30y = 450
400 - 20y + 30y = 450
400+ 10 y = 450
10 y = 50
y= 5

So she brought 5 big cases. Then substitute the value of y into one of the equations.

5+ x = 20
x= 15

So we bought 15 small cases and 5 big cases.

Hope this helps! Please give me the brainliest answer if you like it! If you have further questions, please leave a comment or add me as a friend!

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2 years ago

Read 2 more answers

Need help with math PART 3

mixas84 [53]

Answer:

1. x=40

2. x=17

3. x=5

4. x=83

Step-by-step explanation:

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