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3 years ago

Help please! Will choose brainliest!

Mathematics

1 answer:

S_A_V [24]3 years ago

3 0

Let us start by graphing these points on a coordinate plane.(See picture) So, we can see that (-15,21) is in the 2nd quadrant. (4.5,10.6) is in the 1st quadrant. (-3/4,-4 1/9) is in the third quadrant.And finally, (3,-7) is in the 4th quadrant. Then we come to our y axis and the x axis. On the y axis we have (0,12)and on the x axis we have (18,0). Hope this helps!

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The table show the age in years of employees in a company

adelina 88 [10]

Answer:

A. 24 ≤ a < 26.

B. 22.5

Step-by-step explanation:

A. Determination of the modal class interval.

Mode is the class with the highest frequency.

From the table given above, the highest frequency is 8, therefore the class will the highest frequency is:

24 ≤ a < 26.

B. To obtain the mean, we must determine the class mark. This is illustrated below:

Class >>>>> class mark >>> frequency

18 – 19 >>>> 18.5 >>>>>>>>> 3

20 – 21 >>> 20.5 >>>>>>>> 2

22 – 23 >>> 22.5 >>>>>>>> 7

24 – 25 >>> 24.5 >>>>>>>> 8

26 >>>>>>>> 26 >>>>>>>>> 0

The mean is given by the summation of the product of the class mark and frequency divided by the total frequency. This is illustrated below:

Mean = [(18.5x3) + (20.5x2) + (22.5x7) + (24.5x8) + (26x0)] / (3+2+7+8+0)

Mean = (55.5 + 41 + 157.5 + 196 + 0)/20

Mean = 450/20

Mean = 22.5

Therefore, the mean age is 22.5

4 0

3 years ago

Read 2 more answers

Solve for y: 2x+3y=21

stealth61 [152]

Answer:

y = 7 - 2x/3

Step-by-step explanation:

Make the y alone, so 3y = -2x+21

Divide everything else by 3, so y = -2x/3 +7

You end with the answer of y= 7-2x+3

6 0

3 years ago

Can you please help me, this quiz is timed: 2^3 + 3^3 =

Step2247 [10]

Answer:

Showing da work!

2³+3³

=8+3³

=8+27

=35

______________

*rate this answer and say thanks please!

5 0

3 years ago

There are values of t so that sin t=.35 and cos t=.6

NISA [10]

Recall the fundamental rule of trig:

$\sin^2(x)+\cos^2(x)=1 \quad\forall x \in \mathbb{R}$

So, there exists an angle $t$ such that

$(0.6,0.35)=(\sin(t),\cos(t))$

if and only if

$\sin^2(t)+\cos^2(t)=0.6^2+0.35^2=1$

Working out the numbers, we get

$0.6^2+0.35^2=0.36+0.1225=0.4825\neq 1$

So, there doesn't exist a number $t$ such that

$(0.6,0.35)=(\sin(t),\cos(t))$

7 0

3 years ago

She leaves a 20% tip of 1.80 what is the price of mira’s breakfast before the tip.

Scilla [17]

Answer:

Step-by-step explanation:

The breakfast before tip costs x.

The tip is 20% of x.

The tip is $1.80.

20% × x = 1.80

0.2x = 1.8

x = 1.8/0.2

x = 9

Answer: $9

7 0

3 years ago