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aleksklad [387]
4 years ago
9

Help plzzzz, plzzzz​

Mathematics
2 answers:
Dmitrij [34]4 years ago
8 0
2x +40=4x-10
-2. +10. -2x. +0
50=2x
/2. /2
25=x
Jlenok [28]4 years ago
7 0

Answer:

Step-by-step explanation:

4c+c=90

5c=90

c=90/5=18

∠WMJ=c=18°

∠QMX=4c=4×18=72°

2.

4x+10=2x+40

4x-2x=40-10

2x=30

x=15

vertical angle=2×15+40=70°

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Find the mean absolute deviation to the nearest cent. Explain what this value represents.
emmasim [6.3K]

Answer:

134.38

This value represents 134.38

Step-by-step explanation:

Find the mean.

950+620+545+810+775+1120+905+775=6500

6500/8=812.5

Subtract the mean of numbers.

950-812.5=137.5

812.5-620=192.5

812.5-545=267.5

812.5-810=2.5

812.5-775=37.5

1120-812.5=307.5

905-812.5=92.5

812.5-775=37.5

Find the mean.

137.5+192.5+267.5+2.5+37.5+307.5+92.5+37.5=1075

1075/8≈134.38

This means that 134.38 is $134.38

8 0
3 years ago
Read 2 more answers
Sam is renting one of two cars to go on a 300-mile trip. The first car can travel 75 miles on 5 gallons of gas. The second car c
Doss [256]

Solution:

The first car can travel 75 miles on 5 gallons of gas.

So  per mile gas consumed by car=\frac{5}{75}=\frac{1}{15} gallon

The second car can travel 240 miles on 20 gallons of gas.

So  per mile gas consumed by car=\frac{20}{240}=\frac{1}{12} gallon

It mean Sam should rent the First car.

Sam is renting one of two cars to go on a 300-mile trip.

So total number of gallons of gas required=\frac{1}{15}*300=20

Total cost of 20 gallons of gas =\frac{49.42}{14}*20= 70.6 dollar

3 0
3 years ago
MATH HELP 100 POINTS PLEASE
gogolik [260]

Answer:

Step-by-step explanation:

solid line means >=

y >= x+1

dotted line mean >

y > -x-2

combining

the system of inequalities is y >= x+1 and y > -x-2

3 0
4 years ago
Read 2 more answers
A science teacher gives a test with 15 questions. This teacher is a hard grader. The teacher assigns points in the following man
ASHA 777 [7]

Answer:  The standard deviation was calculated incorrectly.

Step-by-step explanation:

  • The standard deviation measures the dispersion of the data values from the mean value.

It cannot be negative , because it is the square root of the variance .

We add all squared deviations from the data points away from the mean and (then divide it by the number of data values) to evaluate variance.

Since , any squared number cannot give a negative result.

⇒ Standard deviation cannot be negative.

⇒The standard deviation was calculated incorrectly.

Rest other things (given in options) can not be interpreted on the basis of given information.

6 0
3 years ago
The diagram below shows an Isosceles triangle. Label the base angles and the vertex
Anna007 [38]

The  measure of each base angle is 34 degrees and the measure of the vertex angle is 112 degrees

Find the diagram attached.

The base of the isosceles triangle is "b".

Since the base angles are equal, hence the sum of the interior angle is expressed as:

b + b + 112  = 180

2b + 112  = 180

2b = 180 - 112

2b = 68

b = 68/2

b = 34 degrees

Hence the  measure of each base angle is 34 degrees and the measure of the vertex angle is 112 degrees

Learn more angles here: https://brainly.in/question/37797326

7 0
2 years ago
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