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Ulleksa [173]
2 years ago
9

Pls answer i need the answer

Mathematics
1 answer:
just olya [345]2 years ago
7 0

Answer:

(-2,5)

Step-by-step explanation:

4x+4y=12

6x-4y=-32

10x=-20

x=-2

4(-2)+4y=12

-8+4y=12

4y=20

y=5

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In my friend's coin purse, I found 12 pennies. The ages, in years, of the pennies obtained by subtracting the year stamped on th
Arlecino [84]

Answer: mean = 10.3 and median = 9.5

Step-by-step explanation:

Given data :

22, 14, 8, 1, 9, 0, 31, 2, 13, 3, 11, 10

Mean = \dfrac{\text{Sum of all data values}}{\text{No. of data values}}

=\dfrac{22+14+8+1+9+0+31+2+13+3+11+10}{12}

=\dfrac{124}{12}=10.3

Median = Middle most value.

For Median , we first arrange the data values in an order.

0 , 1 , 2, 3, 8, 9, 10 , 11, 13 , 14,  22, 31

Since , number of data values is 12 ( even) , so the median would be the mean of the two middlemost value.

i.e . Median= \dfrac{9+10}{2}=9.5

Hence, the  mean and median of this distribution (in years) are :

mean = 10.3 and median = 9.5

8 0
3 years ago
In a state with a sales tax rate of 7% hernandez buys a radio for 59.99 and a cd for 13.99. how much is the sales tax
yawa3891 [41]
Your total without tax is $73.98
7%=0.07
0.07×73.98=5.1786≈5.18
The sales tax is approximately $5.18
7 0
3 years ago
Round numerical answers to the nearest hundredth, if necessary.
MAXImum [283]

We are to find how long will it take to return to the ground?

Answer:

t = 0.48 sec

Step-by-step explanation:

We are given;

initial velocity; vi = 40 ft/s

hi = 70 ft

acceleration due to gravity; a = 32 ft/s²

Now, we are given that the rocket's height as a function of time is;

h = -12at² + vit + hi

At ground, h = 0

Plugging in the relevant values to obtain ;

0 = -12(32)t² + 40t + 70

-384t² + 40t + 70 = 0

The roots of the equation gives; t = 0.48 sec

6 0
3 years ago
Need help ASAP pls. Need it asap
Strike441 [17]

Answer:

sin x = 39/89       cos x = 80/89     tan x = 89/80

Step-by-step explanation:

SOA  CAH  TOA

sin = opp/adj

cos = adj/hyp

tan = opp/adj

4 0
2 years ago
Solve for x<br> 6.58-8.36x=3.98x-27.33<br> Round to nearest hundred
Vinil7 [7]

Answer:

6.58-8.36x=3.98x-27.33

Collecting like terms

6.58+27.33=3.98x+8.36x

33.91=12.34x

33.91/12.34=12.34/12.34

x=2.75

5 0
3 years ago
Read 2 more answers
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