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nexus9112 [7]
3 years ago
9

SB

Mathematics
1 answer:
miskamm [114]3 years ago
4 0

Answer:

x = 0

Step-by-step explanation:

i) x - 11 + 1 < 15

x - 10 < 15

x < 10 + 15

x < 25

ii) x - 11 + 1 > 15

x - 10 > 15

x > 25

Therefore to compare (i) and (ii)

25 < x < 25

In any case, x = 0

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Determine a scalar c so that the angle between a = i + cj and b = i + j is 45°.​
Marina CMI [18]

Answer:

c=0

Step-by-step explanation:

ATQ a.b=|a||b|sin(45)

1+c=sqrt(1+c^2)*sqrt(2)*1/sqrt(2)

1+c=sqrt(1+c^2)

(1+c)^2=(1+c^2)

2c=0, c=0

6 0
3 years ago
Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 99 people
sertanlavr [38]

Answer:

The probability of getting someone in the 18-21 age bracket or someone who agreed to respond = 0.365

Step-by-step explanation:

The counts are as follows  

Age Group  No of people contacted No of refusals      Total  

18-21               88                                  8                       96

22-29              240                                  42                       282

Total              328                                  50                       378

 

The probability of getting some one in the age bracket of 18-21 or some one who refused to respond is

= \frac{96}{378} + \frac{50}{378} - \frac{8}{378} \\= \frac{96+50-8}{378} \\= \frac{138}{378} \\= 0.365

8 0
3 years ago
Christopher invests $5,000 after 20 years at 2% interest, how much did he earn in interest?
umka2103 [35]

Answer:

At the end of 20 years, your savings will have grown to $16,036. You will have earned in $11,036 in interest.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Angle of a triangle measures 115° the other two angles are in the ratio of 4:9 what are the measures of those two angles
nasty-shy [4]

Answer:

20, 45

Step-by-step explanation:

A triangle has 180 degrees interior angle measure. One angle measure 115 so that means the other two angles  must add up to 65.

The remaning angles form a ratio of 4:9. This means we must split 65 into a ratio of. 4:9

A ratio partition parts of something. We can add the ratio intergers to find it full length.

4+9=13.

Divide 65/13=5.

Multiply 5x4 and 5x9 serpately.

We get 20 and 45

6 0
3 years ago
I will give brainiest to whoever answers correctly !! There are two parts to this question A and B
laila [671]

Answer:

Step-by-step explanation:

5 1/2%=0.024

3500 x 0.025 = 87.5

She paid 87.5$ dollars for the use of money

due date is after 6 months so

3500 times 6 = 21000

21000 times 0.025 = 525

She paid 525$ dollars on the due date

4 0
3 years ago
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