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Stolb23 [73]
3 years ago
13

A. 5 × (-4)2 – (-3)2 please help

Mathematics
1 answer:
Lerok [7]3 years ago
5 0

5* (-4)*2 – (-3)*2

Follow the PEMDAS orders of operation:

Multiply and divide (left to right):

5*(-4)*2 = -40

=-40 -(-3)*2

Multiply and divide (left to right):

(-3) *2 = -6

-40 - (-6)

Add and subtract (left to right):

-40 - (-6) = -34

Your Answer Is -34

plz mark me as brainliest :)

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A bouncy ball is dropped such that the height of its first bounce is 3.25 feet and each successive bounce is 71% of the previous
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Answer:

i do not know bro for real this aint no game at all

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2 years ago
Rounded to the nearest hundredth, what is the positive solution to the quadratic equation 0 = 2x2 + 3x – 8? Quadratic formula: x
Lynna [10]

ANSWER

1.39

EXPLANATION

The given quadratic equation is

0 = 2 {x}^{2}  + 3x - 8

This is the same as,

2 {x}^{2}  + 3x - 8 = 0

Comparing to

a {x}^{2}  + bx  + c = 0

We have

a=2, b=3,c=-8

Using the quadratic formula, the solution is given by:

x =  \frac{ - b \pm \:  \sqrt{ {b}^{2}  - 4ac} }{2a}

We substitute the values to get,

x =  \frac{ - 3\pm \:  \sqrt{ {3}^{2}  - 4(2)( - 8)} }{2(2)}

x =  \frac{ - 3\pm \:  \sqrt{ 73} }{4}

The positive root is

x =  \frac{ - 3 + \:  \sqrt{ 73} }{4} = 1.39

to the nearest hundredth.

4 0
3 years ago
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How many times can 8 into 12
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8 can go into 12 only once.
6 0
2 years ago
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Doug’s family buys 7 postcards while on vacation. Each postcard costs 0.25$ including tax. How can Doug use the number line to f
larisa [96]

Answer: Total cost is $1.75

Explanation:

Since we have given that

Number of postcards bought by Doug's family= 7

Cost of each postcard including tax = $0.25

Total cost is given by

7\times 0.25=\$1.75

Now, we want to show this in number line :

On the number line put all the number with a difference of 0.25 and run the number line seven times and we get the answer.

Each step is of length 0.25 and there are 7 jumps to reach required answer.

So, after 7 jumps we reach at 1.75 which is the required answer.

Hence total cost is $1.75

3 0
3 years ago
Pls need answer fast
galina1969 [7]

Answer:

B

Step-by-step explanation:

The answer is B

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