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4vir4ik [10]
4 years ago
14

Can I please get some help with 3. Please

Mathematics
1 answer:
stepladder [879]4 years ago
6 0
The easiest thing to do to solve all of these is to use the quadratic equation.

\frac{-b +/-  \sqrt{b^{2} -4ac} }{2a}

The first number (the one attached to x^2) is equal to a. The second number (the one attached to x) is b. The final number (the one with nothing attached) is c. 
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Which expression is equivalent to (7-8)(73)?
irina1246 [14]

Answer:

It would be -73 love

7 0
3 years ago
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What percent of 30 is 400?
makvit [3.9K]

You can always find a percent by setting up a fraction
and then doing the division.

To set up the fraction, the top number is some percent of the bottom number.

If  400  is some percent of  30,  then the fraction is

                400 / 30 .

Do the division:     400/30  =  13.333...

To turn a number into a percent, move
the decimal point two places that way  ===> .

                             13.333...  =  1,333.333 %

400  is  (1,333 and 1/3) percent of  30 .

6 0
3 years ago
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The function A(b) relates the area of a trapezoid with a given height of 12 and
Flura [38]

Answer:

B(a)=\frac{a}{6}-9

Step-by-step explanation:

see the attached figure , to better understand the problem

we have

A(b)=12(\frac{b+9}{2})

where

A(b) ---> is the trapezoid's area

b ---> is the other base value

Solve the equation for b

That means ----> isolate the variable b

Divide 12 by 2 right side

A=6(b+9)

Divide by 6 both sides

\frac{A}{6}=b+9

subtract 9 both sides

\frac{A}{6}-9=b

Rewrite

b=\frac{A}{6}-9

Convert to function notation

B(a)=\frac{a}{6}-9

5 0
3 years ago
This month the animal shelter had 50 puppies.
Colt1911 [192]

Answer:

5 percent change

Step-by-step explanation:

5 0
3 years ago
Please help my son dose not understand this ..!!!!!! I’m asking for help ASAP
jasenka [17]

Answer: Please view the picture below

Step-by-step explanation:

This material should not be too difficult. Please study more. :)

6 0
3 years ago
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