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3 years ago

15

Match each quadratic equation with its solution set. arrowRight arrowRight arrowRight arrowRight

2 answers:

quester [9]3 years ago

8 0

Answer:

1 is 7 2 is -3 3 is -2 4 is 3

Step-by-step explanation:

Need points

vova2212 [387]3 years ago

7 0

Answer:

Step-by-step explanation:

For this case we solve each of the equations:

Adding 32 to both sides of the equation:

Dividing between 2 on both sides of the equation:

Applying square root to eliminate the exponent:

Second equation:

Adding 100 to both sides of the equation:

Dividing between 4 on both sides of the equation:

Applying square root to eliminate the exponent:

Third equation:

Adding 55 to both sides of the equation:

Applying square root to eliminate the exponent:

Fourth equation:

Adding 140 to both sides of the equation:

Applying square root to eliminate the exponent:

Fifth equation:

Adding 18 to both sides of the equation:

2x ^ 2 = 18

Dividing between 2 on both sides of the equation:

Applying square root to eliminate the exponent:

Answer:

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Lucy reads 72 chapters of a book in 8 hours. What is her rate in chapters per hour?

Sophie [7]

She read nine chapters each hour

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3 years ago

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What is the product written in scientific notation?

Vesnalui [34]

First, you multiply 2.1 by 3.2, which gives you the answer of 6.72. Then, you multiply 10-2 by 10-4. One rule about multiplying exponents, you just add the exponents. So 10-2 x 10-4 = 10-6. Finally you get the answer of C. 6.72 x 10-6.

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3 years ago

In preperation for an easter egg hunt, 4 blue eggs are filled for every 7 green. How many green eggs will be filled if 100 blue

ivann1987 [24]

Answer:

1. Typed question: 175 green eggs

2. Attached: 22 tables

Step-by-step explanation:

For the question you typed down, it is a ratio and proportion problem. You need to solve for the ratio proportional to the first ratio given.

4 blue eggs are filled for every 7 green. This means that the ratio between blue eggs and green eggs is 4:7.

Now yo need to figure out a ratio proportional to 4:7 if 100 blue eggs were filled. Below is how this is set up:

$\dfrac{4\;blue\;eggs}{7\;green\;eggs} = \dfrac{100\;blue\;eggs}{x\;green\;eggs}$

Now let's solve for x:

$\dfrac{4\;blue\;eggs}{7\;green\;eggs} = \dfrac{100\;blue\;eggs}{x\;green\;eggs}\\\\or\\\\\dfrac{4}{7}=\dfrac{100}{x}\\\\Cross-multiply\\\\4x = (7)(100)\\\\4x = 700\\\\Divide\;both\;sides\;by\;4\\\\\dfrac{4x}{4}=\dfrac{700}{4}\\\\x=175$

For your attached problem:

You have a total of 175 people, you need to figure out how many round tables you need if here are 8 chairs for each table You just need to divide the number of people by the number of chairs per table.

175 ÷ 8 = 21.9 tables

Now since you cannot have half a table, you round up to the nearest whole number. (we round up because you need to make sure that all of them are seated)

21.9 ≅ 22 tables.

8 0

3 years ago

I.5y=2x-5<br> II.5y=4+3x<br> III.5y-3x=-1

Ratling [72]

Answer:

Step-by-step explanation:

the vale of x differs in each situation are we talking AB value

6 0

3 years ago

What is the answer to (−2)³

svetlana [45]

(−2)³ = (-2)(-2)(-2)

Note that:

two negative numbers multiplied together results in a positive

one negative and one positive number multiplied results in a negative

Multiply:

(-2)(-2) = 4

4(-2) = -8

-8 is your answer

hope this helps

4 0

3 years ago

Read 2 more answers