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3 years ago

I need help with these 2 questions.

Mathematics

1 answer:

Natalka [10]3 years ago

7 0

I only see one questio but the answer to this one is a^2/b

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Worth 45 points. Solve. 4k^2+12k+8

matrenka [14]

Answer:

k = -1, -2.

Step-by-step explanation:

4k^2+12k+8 = 0

Divide by 4:

4(k^2 + 3x + 2) = 0

4(k + 1)(k + 2) = 0

k = -1, -2.

6 0

3 years ago

Read 2 more answers

PLEASE HELPPPP :(((((((((((

uysha [10]

Answer:

3 6/10, 5 2/5, 5 2/6, 3 3/9, 4 2/7, 6 6/8

Step-by-step explanation:

divide numerator by denominator

6 0

3 years ago

Read 2 more answers

The price of 10 citrons and 7 fragrant wood apples is 55 units. The price of 7 citrons and 10 fragrant wood apples is 64 units.

a_sh-v [17]

Price of one citron = 5 units

Price of one fragrant = 5/7 units = 0.71 units

Further explanation:

Let x be the price of one citron and

y be the price of one fragrant

Then according to given statement

10x+7y = 55 Eqn 1

7x+10y = 64 Eqn 2

Multiplying equation 1 by 7

$7(10x+7y) = 7(55)\\70x+49y=385$

This will be equation 3.

Multiplying equation 2 by 10

$10(7x+10y) = 10(64)\\70x+100y=640$

This will be equation 4.

Subtracting equation 3 from equation 4

$70x+100y - (70x+49y) = 640-385\\70x+100y-70y-49y = 255\\51y = 255\\\frac{51x}{51} = \frac{255}{51}\\x = 5\\Putting\ x=5\ in\ equation\ 1\\10(5)+7y = 55\\50+7y = 55\\7y = 55-50\\7y = 5\\\frac{7y}{7} =\frac{5}{7}$

So,

Price of one citron = 5 units

Price of one fragrant = 5/7 units = 0.71 units

Keywords: Linear Equations, Solving system of linear equations

Learn more about linear equations at:

#LearnwithBrainly

5 0

3 years ago

The Jelly Junior High school color is made by mixing red paint with yellow paint. The ratio of red to yellow is 3 to 5. How much

user100 [1]

V/a = 3/5
a = 20
v = ...

3/5 = v/20
5v = 20*3
5v = 60
v = 60/5
v = 12 oz

8 0

4 years ago

Can anyone help me with this please.

harkovskaia [24]

Answer:

sketch them into a graph and use the vertical-line trick. If you don't know what this is, you see if two points pass through the same verticaly. If it does than it is NOT a function. If it doesn't it IS a function

If it does theStep-by-step explanation:

8 0

3 years ago