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Setler79 [48]
3 years ago
14

Jen solved the equation to determine the number of questions, x, she answered incorrectly on a test. She began by subtracting 10

0 from both sides, then multiplying both sides by –2. Which best describes the accuracy of Jen’s work?
Mathematics
2 answers:
fgiga [73]3 years ago
8 0
Answer is Correct. She could have also subtracted 100 from both sides, then divided by .
KatRina [158]3 years ago
5 0

Answer:

Correct. She could have also subtracted 100 from both sides, then divided by Negative one-half.

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What is the answer to 7x+5y=-66<br>​
OverLord2011 [107]

Since this does not have two equations, many answers are acceptable.

One of these is x = -8, y = -2.

6 0
3 years ago
Read 2 more answers
5/26
elena-s [515]

k =1.89 is the constant of  proportionality that represents the  relationship between the cost, y, to the  number of pounds of potatoes, x .

<u>Step-by-step explanation:</u>

Here we have , The cost of 2 pounds of potatoes is  $3.78. We need to find  the constant of  proportionality that represents the  relationship between the cost, y, to the  number of pounds of potatoes, x . Let's find out:

Cost is y &  number of pounds of potatoes is x  :

y = (k)x , where k is constant of  proportionality that represents the  relationship between the cost, y, to the  number of pounds of potatoes, x .

⇒ y = (k)x

⇒ 3.78 = (k)2

⇒ \frac{3.78}{2} = \frac{(k)2}{2}

⇒ \frac{3.78}{2} =k

⇒ k =1.89

Therefore, k =1.89 is the constant of  proportionality that represents the  relationship between the cost, y, to the  number of pounds of potatoes, x .

4 0
3 years ago
The units of the subway map below are in miles. Suppose the routes between stations are straight. Station​ G, not shown on the​
slega [8]

Answer:

8.60 miles

Step-by-step explanation:

If S=station​ G, not shown on the​ map, is 5 miles east and 7 miles south of Station A, the approximate distance between Station E and Station G when traveling by​ subway will be gotten using the Pythagoras theorem.

EG² = 5²+7²

EG² = 25+49

EG² = 74

EG = √74

EG = 8.60 miles

<em>Hence the approximate distance between Station E and Station G when traveling by​ subway is 8.60miles</em>

7 0
3 years ago
What is 2/7 divided by 4? <br> A. 2/14 <br> B. 1/14<br> C. 2/11<br> D. 1/28
prohojiy [21]
The answer is B 1/14......
5 0
3 years ago
Read 2 more answers
A is the poin 3,5 and b is the point 0,k if the distance of ab is 5 units find the possible value of k
JulijaS [17]

Answer:

K is either 9 or 1

Step-by-step explanation:

Sqrt((0 - 3)² + (k - 5)²) = 5

Square both sides

(0 - 3)² + (k - 5)² = 5²

(0 - 3)² + (k - 5)² = 25

-3² + (k - 5)² = 25

9 + (k-5)(k-5) = 25

9 + k² - 5k - 5k + 25 - 25 = 0

k² - 10k +9 = 0

k² - 9k - k + 9 = 0

k(k - 9) - 1(k - 9) = 0

k - 1 = 0 ; k = 1

k - 9 = 9; k = 1

K = 9 or k = 1

K is either 9 or 1

4 0
3 years ago
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