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Rasek [7]
3 years ago
12

31% of 40 estimate what is it please help​

Mathematics
2 answers:
chubhunter [2.5K]3 years ago
7 0

31% of 40 is 12.4 exactly

Vadim26 [7]3 years ago
6 0

This indication of how well your heart is pumping out blood can help to ... A ejection fraction measurement under 40 percent may be evidence of heart failure or cardiomyopathy

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If a(12)= x/3+2 and b(x)=12x, what is a(12)+b(1)?
bonufazy [111]

Answer:

a(12) = 12 \div 3 + 2  \\  + b(1) =  12 \times 1  \\  = 4 + 2 + 12 = 18

5 0
2 years ago
Can someone help me for this question please? Why I got wrong answer. ASAP!!!
Snowcat [4.5K]

Answer:

a=8.06

A=29.74

B=60.26

Step-by-step explanation:

This is a right angled triangle and Pythagoras theorem is to be obeyed.

To get c, we follow the Pythagoras rule that says

Hyp² = Opp² + Adj²

c= Hypotenuse

c²= a² + b²

c² = 4² + 7²

c² = 65

c = √65 = 8.06

For angle A,

the opposing side to the angle = a = 4

The adjacent side to the angle = b = 7

Following trigonometry rule.

Tan A = opp/adj

Tan A = 4/7

A = Tan–¹(4/7)

A = 29.74°

For angle B,

Opposing side = 7

Adjacent side = 4

Tan B = 7/4

B = Tan-¹(7/4)

B = 60.26°

5 0
3 years ago
During the spring, when the snow and ice melt in the Inka Binka Mountains, it causes the Habooka River to rise. If the river ris
stepladder [879]

Answer:

6 centimeters per day

Step-by-step explanation:

Since there are 7 days in one week, 42 cm divided by 7 days will equal to the answer 6 centimeters per day.

5 0
2 years ago
in a survey at a local university, 65% of students say that they get less than the recommended right hours of sleep per night. i
Arlecino [84]
.35(2100)= 735 students
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3 years ago
6. Write the equation of the line in slope-intercept form that has the following points: (1, -3) (0, -5)
Troyanec [42]

Answer:

y = 2x −5

Step-by-step explanation:

The slope is 2 and the Y intercept is -5 so the equation is:

y = 2x -5

7 0
1 year ago
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