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Nikitich [7]
3 years ago
13

One day the temperature started -7°F and drop 19° by the end of the day what was the temperature at the end of the day

Mathematics
1 answer:
Kobotan [32]3 years ago
5 0

Answer:-26

Step-by-step explanation: -7 - 19

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Marquise sold shirts to raise money for school.
Rashid [163]
The shirts were sold at $15 each. 

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3 years ago
Can someone Help I’ve been stuck on this
EastWind [94]

Answer:

x=5

y=12

Step-by-step explanation:

the equation is

12x-5+125=180

12x+120=180

12x=60

x=5

According to the question

8y+29=125

8y=96

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3 0
3 years ago
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Please help with 8 and 9. gob bless
AlekseyPX
8.) The answer would be 53.

I don't know 9 so sorry.
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3 years ago
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I need answer on this graphing va substitution.Problem 7 I tried to solve it but not sure that’s correct
Bond [772]

Given the system of equations:

\begin{gathered} 2x+9y=27 \\ x-3y=-24 \end{gathered}

To solve it by substitution, follow the steps below.

Step 1: Solve one linear equation for x in terms of y.

Let's choose the second equation. To solve it for x, add 3y to each side of the equations.

\begin{gathered} x-3y=-24 \\ x-3y+3y=-24+3y \\ x=-24+3y \end{gathered}

Step 2: Substitute the expression found for x in the first equation.

\begin{gathered} 2x+9y=27 \\ 2\cdot(-24+3y)+9y=27 \\ -48+6y+9y=27 \\ -48+15y=27 \end{gathered}

Step 3: Isolate y in the equation found in step 2.

To do it, first, add 48 to both sides.

\begin{gathered} -48+15y=27 \\ -48+15y+48=27+48 \\ 15y=75 \end{gathered}

Then, divide both sides by 15.

\begin{gathered} \frac{15y}{15}=\frac{75}{15} \\ y=5 \end{gathered}

Step 4: Substitute y by 5 in the relation found in step 1 to find x.

\begin{gathered} x=-24+3y \\ x=-24+3\cdot5 \\ x=-24+15 \\ x=-9 \end{gathered}

Answer:

x = -9

y = 5

or (-9, 5)

Also, you can graph the lines by choosing two points from each equation, according to the picture below.

7 0
1 year ago
Jenny buys 22 pens that cost $1.15 each and 15 markers that cost $2.05 each. How much did Jenny spend?​
kykrilka [37]

You would do for pens

22 x 1.15 =25.30

And for markets

15 x 2.05 = 30.75

And since you are trying to find how much he spent in all you would add the two sums

25.30 + 30.75 = 56.05

4 0
3 years ago
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