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Mashcka [7]
2 years ago
8

Solve the system of equations

Mathematics
1 answer:
agasfer [191]2 years ago
8 0
D<span>here, we go by the same exact principle, but the terms are not a,b,c.
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24x-12-43x-6 <br> Simplify.<br> Please help!! ASAP!!
sergiy2304 [10]

Answer:

-30

Step-by-step explanation:

Hope this helps! Brainliest is appriciated.

5 0
3 years ago
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1 point<br> 9) A 12-foot long sub sandwich is cut into 7 equal pieces. How long is each<br> piece? *
Makovka662 [10]

Answer:

20 4/7 inches

Step-by-step explanation:

Take 12 feet and convert to inches

1 ft = 12 inches

12 * 12 = 144 inches

Divide by 7

144/7 =20 with 4 left over

20 4/7 inches

5 0
3 years ago
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&lt;
Alik [6]

Answer:

2cm of Rainfall

Step-by-step explanation:

When the no. of mosquitoes is the highest the slope of graph will be zero

so if we differentiate this function and equate to zero we can find the rainfall amount that gives maximum number of mosquitoes in centimetres.

m(x)= -x²+4x

differentiate

d(x)/d(m(x))= -2x+4

equate to zero

-2x+4=0

2x=4

x=2

answer: 2 cm of rain

6 0
3 years ago
An equilateral triangle has a perimeter of 15x3 + 33x5 feet. What is the length of each side?
NNADVOKAT [17]

Answer:

70

Step-by-step explanation:

So I assumed that the x was multiplication...so...15x3=45 and 33x5=165...so the perimeter is 210, so you divide that by 3 and the answer is 70!

4 0
3 years ago
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A survey found 195 of 250 randomly selected Internet users have high-speed Internet access at home. Construct a 90% confidence i
Andrej [43]

Answer:

d. (0.737, 0.823)

The 90% confidence interval is = (0.737, 0.823)

Step-by-step explanation:

Confidence interval can be defined as a range of values so defined that there is a specified probability that the value of a parameter lies within it.

The confidence interval of a statistical data can be written as.

p+/-z√(p(1-p)/n)

Given that;

Proportion p = 195/250 = 0.78

Number of samples n = 250

Confidence interval = 90%

z value(at 90% confidence) = 1.645

Substituting the values we have;

0.78 +/- 1.645√(0.78(1-0.78)/250)

0.78 +/- 1.645√(0.0006864)

0.78 +/- 1.645(0.026199236630)

0.78 +/- 0.043097744256

0.78 +/- 0.043

(0.737, 0.823)

The 90% confidence interval is = (0.737, 0.823)

8 0
2 years ago
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