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Scrat [10]
4 years ago
14

Help me please..........

Mathematics
1 answer:
romanna [79]4 years ago
5 0

Answer: <em>(-3; -11)</em>

Step-by-step explanation:

\left \bigg \{ {\big{y=7x+10} \atop\big {y=-4x-23}} \right.\\\\7x+10=-4x-23\\7x+10-10=-4x-23-10\\7x=-4x-33\\7x+4x=-4x-33+4x\\11x=-33\\11x \div 11=-33 \div 11\\x=-3\\\\y=7x+10\\y=7 \times (-3)+10=-21+10=-11

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Help! please explain but if you don't explain that okay Too!!mark as brain
Mandarinka [93]

Answer:

A=2(wl+hl+hw)

that the formula

Length

L  11

W 8

H 21

8 x 11 + 21 x 11 + 21 x 8

SA = 974in^2

Step-by-step explanation:

Hope this helps :)

4 0
3 years ago
What is the equation of the line that goes through (-1,-1) and is perpendicular to y=5x+3
levacccp [35]
Perpendicular lines have slopes that multiply to -1

y=mx+b
slope=m
y=5x+3

5=slope
5 times what=-1
divide both sides by 5
what=-1/5

the equation of a line that passes through the point (x1,y1) and has a slope of m is
y-y1=m(x-x1)
given

m=-1/5
point=(-1,-1)

y-(-1)=-1/5(x-(-1))
y+1=-1/5(x+1)
y+1=-1/5x-1/5
y=-1/5x-6/5
1/5x+y=-6/5
x+5y=-6


the euation is
y+1=-1/5(x+1) or
y=-1/5x-6/5 or
x+5y=-6 (all same equation but different forms)

3 0
4 years ago
Read 2 more answers
A marketing research company is estimating the average total compensation of party clowns. Data were randomly collected from 48
ExtremeBDS [4]

Answer:

"90% confidence" means there is a probabilty of 90% that the population mean (average compensation for the population of party clowns) lies within the confidence interval.

Step-by-step explanation:

The confidence interval is a range of values in which, according to the level of confidence that is calculated, is likely to include a parameter of the population. In this case, this parameter is the population mean compensation of party clowns.

The level of confidence is 90%, so there is 90% of confidence (or probability) that the population mean compensation for party clowns lie within $9394 and $9926.

None of the options below is correct.

3 0
3 years ago
Solve for x x(5x+2)=0​
maksim [4K]

Answer:

x = 0.4

x = 2/ 5

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
3. (06.03) Solve the following system of equations by graphing and select the correct answer below: 2x + 6y = 20 3x − 2y = 8 (5
mr Goodwill [35]
2x+6y+(9x-6y)=20+24
11x=44
X=4
Y=2

I hope this helped!
5 0
3 years ago
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