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liraira [26]
3 years ago
7

Help plis (50 points)

Mathematics
2 answers:
earnstyle [38]3 years ago
5 0

Answer:

addition problems

1.-3p-11

2.24c+1

3.-4r-5

4.39m+32

5.75d-22

subtraction problems

1.s

2.6p+42

3.1v-18

4.21n-45

5.-8p-2

UNO [17]3 years ago
3 0
Addition problems
1.-3p-11
2.24c+1
3.-4r-5
4.39m+32
5.75d-22
subtraction problems
1.S
2.6p+42
3.1v-18
4.21n-45
5.-8p-2
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the profit p in dollars from selling x calculators is p=25x-(10x+250) how many calculators are sold when the profit is $425
podryga [215]
425=25x-10x-250
675=15x
x=45
45 calculators were sold.

4 0
3 years ago
Find the value of r so the line that passes through (-5,2) and (3,r) has a slope of -1/2
soldier1979 [14.2K]

The value of r so the line that passes through (-5,2) and (3,r) has a slope of -1/2 is -2

<u>Solution:</u>

Given that line is passing through point (-5, 2) and (3, r)

Slope of the line is \frac{-1}{2}

Need to determine value of r.

Slope of a line passing through point \left(x_{1}, y_{1}\right) \text { and }\left(x_{2}, y_{2}\right)  is given by following formula:

\text { Slope } m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}  --- eqn 1

\text { In our case } x_{1}=-5, y_{1}=2, x_{2}=3, y_{2}=\mathrm{r} \text { and } m=-\frac{1}{2}

On substituting the given value in (1) we get

\begin{array}{l}{-\frac{1}{2}=\frac{r-2}{3-(-5)}} \\\\ {\text { Solving the above expression to get value of } r} \\\\ {=>-\frac{1}{2}=\frac{r-2}{3+5}} \\\\ {=>-8=\frac{r-2}{3+5}} \\\\ {=>-8=2(r-2)} \\\\ {=>-8=2 r-4} \\\\ {=>2 r=-8+4} \\\\ {=>2 r=-4} \\\\ {=>r=\frac{-4}{2}=-2}\end{array}

Hence the value of "r" is -2

8 0
4 years ago
9+10 ii am struggling really bad plz help.
Valentin [98]

Answer:


Step-by-step explanation:

9+10=19.

Replace the 0 in the ten with the 9.


3 0
3 years ago
Daniela buy records for 9$ each she buys 8 records how much money does Daniela spend
seropon [69]

Answer:

FGCG

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
SOMEONE PLZZZ ANSWER THIS IM VERY BAD AT THIS!!
Furkat [3]

Answer:

Step-by-step explanation:

A. Linear- the add up to 180

B. 3x-5+2x+3+4x+2=180

   9x=180

    x=20

C. plug x in

   ABD- 55, DBK- 82, KBC- 43

7 0
3 years ago
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