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Karo-lina-s [1.5K]
2 years ago
9

What is it mean? a. 27.19 b. 27.29 c. 28.10 d. 28.11

Mathematics
1 answer:
Len [333]2 years ago
3 0
Mean is average so you sum up all 4 numbers and divide by 4. Answer is 27.6725 or rounded 27.67

Have a nice day. Hope this helps.
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1/2(x+10)= 1/4 (x-8) x= <br> (must be a fraction)
Alex_Xolod [135]

Answer:

x=-9\frac{1}{3}

Step-by-step explanation:

\frac{1}{2}(x+10)=\frac{1}{4}(x-8)

\frac{1}{2}x+5=\frac{1}{4}x-2

\frac{1}{2}x-\frac{1}{4}x=-5-2

\frac{3}{4}x=-7

x=-\frac{28}{3}=-9\frac{1}{3}

5 0
3 years ago
Solve the following quadratic equation. Express your answers in exact form.
wlad13 [49]

Answer:

x = (2+√10)/ 3 and x= (2-√10/3)

Step-by-step explanation:

g(x) = -3x² +4x +2

use the quadratic formula x= (-b±√b²-4ac)/2a, when g(x) = ax² +bx +c

x= [-4 ±√4²-4*(-3)*2] / 2*(-3) , solve under the square root

x= (-4 ± √16 +24) / -6 , add under the radical

x= (-4 ±√40) / -6, simplify the square root

x= (-4 ±2√10) /-6, factor -2

x= -2 (2±√10)/-2 *3, simplify -2

x= (2±√10)/3

Therefore,

x = (2+√10)/ 3 and x= (2-√10/3)

5 0
3 years ago
A tablet is on sale for 30% off. the regular price is $185. how much money will you save?
Burka [1]

Answer:

185×30÷100=55.5

HERES YOUR answer

8 0
3 years ago
Mario fils out an information card. His ZIP code is 83628 His area code is 208. Which statement about the value of the 2 in 83.6
wlad13 [49]

Answer:

in the similar hundreds place except in 83.628 it is the the hundre'ths' place which is different

Step-by-step explanation:

6 0
2 years ago
HELP!!!
marusya05 [52]
The equation of an ellipse is x²/a²  + y²/b² =1

a being the distance between the center & x intercept =7
b being the distance between the center & y intercept =5

Hence the equation of this ellipse is:

x²/49 + y²/25 =1
3 0
2 years ago
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