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const2013 [10]
3 years ago
15

Which expression is equivalent to 10k + 17 - 7j - 18 - 11k?

Mathematics
2 answers:
atroni [7]3 years ago
7 0

Answer:

B

Step-by-step explanation:

We want to simplify the expression. The expression is:

10k + 17 - 7j - 18 - 11k

To simplify this expression, combine the like terms. Add all the terms with a “k”, then the terms with a “j”, and lastly the constants, or terms without a variable.

(10k+ - 11k) + (-7j) + (17+-18)

Add 10k and -11k.

(10k-11k) +(-7j) +(17+-18)

-k+(-7j)+(17+-18)

-k-7j+(17+-18)

There is only one term with a “j”, so we can move on to the constants. Add 17 and -18.

-k-7j+(17-18)

-k-7j-1

The simplified expression is -k-7j-1, which can be rewritten as -7j-k-1. Therefore. B is the correct answer.

coldgirl [10]3 years ago
5 0

Answer:

B.-7j - k - 1

Step-by-step explanation:

10k + 17 - 7j - 18 - 11k

Combine like terms

10k -11k  -7j +17 -18

-k -7j -1

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anyanavicka [17]

Answer:

24x^2

Step-by-step explanation:

When expanded (x+2)^4= x^4+8x^3+24x^2+32x+16

The only term that matches with these is 24x^2

5 0
3 years ago
Read 2 more answers
The scale of a map is 1:4 000 000. Hint: 1:4 000 000 means that 1cm on the map = 4 000 000 on the ground. The distance between L
GrogVix [38]

Answer:

325 km

Step-by-step explanation:

Given the scale :

1 : 4 ,000, 000

1cm measure in map = 4000000 on the ground

From the map :

Distance between Leeds and London = 8.125 cm

The actual distance on ground can be calculated thus :

1cm = 4,000,000

8.125cm = x

Cross multiply

x = 32500000 cm

Converting to kilometers :

1 km = 100,000 cm

x = 32500000

Cross multiply

100,000x = 32500000

x = 32500000 / 100000

x = 325

Hence, actual distance between Leeds and London is 325 km

3 0
3 years ago
Which shows the correct substitution of the values a, b, and c from the equation –2 = –x + x2 – 4 into the quadratic formula? Qu
sergejj [24]

Answer:

The answer in the procedure

Step-by-step explanation:

we have

2=-x+x^{2} -4

x^{2}-x-4-2=0

x^{2}-x-6=0

we know that

The formula to solve a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}

in this problem we have

x^{2}-x-6=0

so

a=1\\b=-1\\c=-6

substitute in the formula

x=\frac{-(-1)(+/-)\sqrt{(-1)^{2}-4(1)(-6)}} {2(1)}

x=\frac{1(+/-)\sqrt{25}} {2}

x=\frac{1(+/-)5} {2}

x=\frac{1(+)5} {2}=3

x=\frac{1(-)5} {2}=-2

8 0
3 years ago
Marcella Heinz purchased office supplies at Office Emporium for $107.64. She then purchased an English-Spanish dictionary for $1
Sliva [168]

The total amount of tax on her purchases to the nearest cent will be $9.97

<em><u>Explanation</u></em>

Marcella Heinz purchased office supplies for $107.64 and then she purchased an English-Spanish dictionary for $16.95

So, the total amount of her purchases =\$107.64+\$16.95=\$ 124.59

On the total amount of the purchases, she paid state sales tax of 7.5% and the county tax of 0.5%

So, the <u>amount of the state sales tax</u> =\$124.59*7.5\%= \$124.59*0.075=\$9.34425

and the <u>amount of county tax</u> =\$124.59*0.5\% =\$124.59*0.005 = \$0.62295

Thus, the total amount of tax on her purchases =\$9.34425+\$0.62295= \$9.9672 \approx 9.97  <em>(Rounded to the nearest cent)</em>

8 0
4 years ago
Noah is trying to bisect angle BAC. He draws circles of the same radius with centers B and C and then uses one of the points of
Finger [1]

Answer:

he forgot the A

Step-by-step explanation:

:)

6 0
3 years ago
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