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3 years ago

How do you solve number 13(the last one)

Mathematics

1 answer:

N76 [4]3 years ago

3 0

Lets say that variable x=total number of hotdogs, and variable y=total number of drinks. Our first equation will calculate the total cost.
2x+1y=11. We are multiplying the price by the total number of each item then adding them together, since they spent a total of $11. Our second equation will calculate the number of items.
x+y=8.
To solve, we will isolate x in the second equation. x=8-y We will substitute that for x in the first equation. 2(8-y)+1y=11 Distributive property. 16-2y+1y=11 Combine like terms. 16-y=11 Isolate y to solve. y=5 Then we plug y into the second equation and solve for x. x+5=8 Subtract 5 from both sides. x=3

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Stephen evaluated (6.34 times 10 Superscript negative 7 Baseline) (4.5 times 10 Superscript 3 Baseline). His work is shown below

Maksim231197 [3]

Answer:

The step 4 and 5 describe the errors Stephen made.

Step-by-step explanation:

Given : Stephen evaluated $(6.34\times 10^{-7})(4.5\times 10^3)$ . His work is shown below.

To find : Which two statements describe the errors Stephen made?

Solution :

Step 1 - $(6.34\times 10^{-7})(4.5\times 10^3)$

Step 2 - $(6.34\times 4.5)(10^{-7}\times 10^3)$

Step 3 - $(28.53)(10^{-4})$

Step 4 - $28.53\times 10^{4}$

Error is the step as 4 sign is negative.

So correct step is $28.53\times 10^{-4}$

Step 5 - $28.53\times 10^{3}$

Error is the step as there is 4 in place of 3.

So correct step is $28.53\times 10^{-4}$

The step 4 and 5 describe the errors Stephen made.

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blsea [12.9K]

The one that has positive 2 as the y intercept

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4 years ago

Round 919827 to the nearst thousand

blondinia [14]

It would be 0 because 8 is over 5 so ya

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If 6 times a certain number is added to 8, the result is 32.. . Which of the following equations could be used to solve the prob

liberstina [14]

Let x be the certain number and that six time this number may be expressed as 6x. Based on the conditions presented above, the sum of 6x and 8 should be equal to 32. This may be mathematically expressed as,

6x + 8 = 32

Therefore, the answer is fourth choice.

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Answer

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Step-by-step explanation:

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