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mina [271]
3 years ago
5

2 Which expression is equivalent to 64-*?

Mathematics
1 answer:
Rasek [7]3 years ago
3 0

Answer:

2

Step-by-step explanation:

(8-x)(8+x)

8×8=64

-x·+x=-x^2

64-x^2

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Use an equation to find the value of k so that the line that passes through (-2,k) and (2,0) has a slope of m=-1
Dima020 [189]

Answer:

The value of k is 4.

Step-by-step explanation:

To find the missing coordinate, we can use the slope equation and plug in all known values.

m(slope) = (y2 - y1)/(x2 - x1)

-1 = (k - 0)/(-2 - 2)

-1 = k/-4

Now we can solve using cross multiplication.

-1 = k/-4

k*1 = -1*-4

k = 4

6 0
3 years ago
A circle has a diameter of
blsea [12.9K]

Step-by-step explanation:

to calculate circumference:

2\pi \: r

if the diameter is 16 then the radius would be 8.

2\pi \:r \\  = 2\pi(8) \\  = 16\pi \\  =Rationalize(50.26548245744) \\circumference  = 50.27

to calculate the area of a circle:

\pi  {r}^{2}   \\  = \pi( {8})^{2}  \\ = Rationalize(201.06192982975) \\ area = 201.06 \:  ^{2}

5 0
2 years ago
Tara received 28 out of 35 points on her last math test. What percentage score did the teacher record in her grade book for Tara
ZanzabumX [31]

Answer:

80%

Step-by-step explanation:

28/35 = 0.8

Divide. Convert a decimal to a percent by multiplying times 100.

0.8 × 100 = 80

Tara earned an 80%

You could use a calculator as described above or using mental math or pencil and paper:

28/35 = 4/5

Simplify.

4/5 = 8/10 = 80/100

Percent means per hundred, change 28/35 to hundredths as above.

Tara (still) gets an 80%.

4 0
2 years ago
Please please help me dayson is covering a package in the shape of a rectangular prism with wrapping paper. the package is 50 ce
olga2289 [7]

The package has a surface area of 4520cm². The area of the package is less than the area of the wrapping paper. So, dayson  can cover the package with the wrapping paper.

According to the question,

The first step is to determine the surface area of the package.

Total surface area of a cuboid = 2 (l w + w h + l h)

where:

• l = length

• w = width

• h = height

2[(50 x 20) + (50 x 18) + (20 x 18)] = 4520cm²

The second step is to convert 1 square meter to cm

1m² = 100 cm²

100 x 100 = 10,000

To learn how to convert units, please check: brainly.com/question/25993533

#SPJ4

7 0
2 years ago
A real estate aqent earns a commission on a house she sells. Her first commission is 5% on the first 500,000 of the sale price o
Orlov [11]
The agent earned $30,100 in commission.

you first have to break up the number 585,000 into 500,000 and 85,000.

next, you find the commission on the first $500,000. 5% of 500,000 is 25,000.

after finding the commission for the first 500,000, you need to find the commission to the $85,000 dollars we still have.

6% of $85,000 is $5,100.

$25,000 + $5,100 = $30,100 in commission. hope this helps !
4 0
3 years ago
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