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larisa [96]
2 years ago
8

Teri incorrectly solved the system of equations below. Correctly identify the error Teri made. 2x - 10 y = -30 x - 5y = 20 Step

1: x - 5y = 20 x = 5y + 20 Step 2: 2(5y + 20) - 10 y = -30 10y + 40 - 10y = -30 40 = -30
Mathematics
1 answer:
umka21 [38]2 years ago
3 0

Answer:

See explanations below

Step-by-step explanation:

Given the system of equation

2x - 10 y = -30 ... 1

x - 5y = 20 ... 2

Step: From 2;

x = 20 + 5y ...3

Step 2: Substitute equation 3 into 1

2x - 10y = -30

2(5y+20) - 10y = -30

Open the bracket

10y + 40 - 10y = -30

10y - 10y + 40 = -30

0+40 = -30

40 = -30

The steps taken by Teri are correct all through. He didn't make any error whatsoever

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BAKED GOODS Mary sells giant chocolate chip and peanut butter cookies for
mestny [16]

Answer:

(1.25c) + (1p) ≥ 25

c is the amount of chocolate chip cookies

p is the amount of peanut butter cookies

7 0
3 years ago
Fidel has $217.18 and his checking account until the end of the month Fidel writes a check for $357.42 how much money does Fidel
Alenkasestr [34]

Answer:

the amount that Fidel now have in his checking account is $140.24

Step-by-step explanation:

The computation of the amount that Fidel now have in his checking account is shown below:

= Ending balance  - Opening balance

= $357.42 - $217.18

= $140.24

Hence, the amount that Fidel now have in his checking account is $140.24

We simply applied the above formula so that the correct value could come

And, the same is to be considered

7 0
2 years ago
A factory produces 80,000 candies each day. They produce equal quantities of four favors: cherry,lemon,orange,and strawberry. Th
Nostrana [21]

Answer:

0.25 is the probability that the randomly selected candy is orange.

Step-by-step explanation:

We are given the following in the question:

Total number of candies = 80,000

Four equal number of flavored candies:

cherry,lemon,orange,and strawberry

Thus, number of orange candies =

= \dfrac{\text{Total number of candies}}{4}\\\\=\dfrac{80000}{4} = 20000

Thus, 20,000 orange flavored candies are produced.

\text{Probability} = \displaystyle\frac{\text{Number of favourable outcomes}}{\text{Total number of outcomes}}

P(orange) =

=\dfrac{\text{Number of orange candies}}{\text{Total number of candies}}\\\\=\dfrac{20000}{80000} = \dfrac{1}{4} = 0.25

0.25 is the probability that the randomly selected candy is orange.

6 0
3 years ago
Place the decimal point in the answer to make it correct. Explain your reasoning. 3.9853X8.032856 = 32013341.
horsena [70]
<span>1.       </span><span>The Given problem is to find where to place the decimal point to the product shown below.
3.9853 x 8.032856, notice that the given equation are decimal numbers with both ones place value of the whole number.
Now, given the answer 32013341 without decimal point, let’s find where to put the decimal point.
=> 3.9853 x 8.032856
=> 32.013341
Thus, the decimal point is now located after the 2nd number.  We now have 2 whole numbers with value of tens.

 </span>



5 0
3 years ago
On her last credit card bill, Linda paid a variable rate of 1.8 percent on the first $200 and 1.2 percent on
dybincka [34]

Interest paid by Linda is equal to $4.272 approximately equal to $4.27.

<u> Solution: </u>

Given that  

Rate of interest on first $200 = 1.8%

Rate of interest on any amount over $200 = 1.2%

Unpaid balance amount of Linda’s credit card bill = $256

Need to calculate interest paid by her on $256.

Unpaid balance = $256  

=$200 + 56

Amount over $200 = 56

Interest paid on first $200 = 1.8% of 200

= 0.018 x 200 = $3.6

Interest paid on amount over $200 that is $56 = 1.2% of 56

= 0.012 x 56 = $0.672

So total interest paid on $256 = 3.6 + 0.672 = $4.272.

Hence interest paid by Linda is equal to $4.272 approximately equal to $4.27.

4 0
3 years ago
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