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irina1246 [14]
3 years ago
15

Lana is the oldest of four sisters. Her youngest sister is half her age. The other two sisters are twins 2 years younger than La

na. When the four sisters' ages are added together, the result is 45. If the youngest sister is n years old, what is n?
Mathematics
1 answer:
miv72 [106K]3 years ago
4 0

Answer:

The youngest sister would be 4 years old

Step-by-step explanation:

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URGENT
nadya68 [22]

Answer:

Scalene, Acute

Step-by-step explanation:

Scalene because each side has a different length

obtuse because one angle is more than 90°

6 0
3 years ago
A rectangular has sides that measure 9 centimeters by 12 centimeters by 23 centimeters. Joan filled the container to its brim wi
Svet_ta [14]
So you need to find the volume of the rectangular prism and the equation for that is V=l×w×h. If you plug those numbers in you'd get 9×12×23=2,484. If you multiply 2,484 by \frac{1}{3} because you'd have to pour out \frac{1}{3} of the water out so that it's only \frac{2}{3} of the volume of water is left. 2,484×\frac{1}{3}= 828mm.
8 0
3 years ago
What is the opposite of square root
Olin [163]

the opposite is squared so,

square root of 4 is 2 and 2 squared is 4

4 0
3 years ago
Read 2 more answers
There is a line whose y-intercept is 7 and whose slope is 8. What is its equation in slope-intercept form?
Annette [7]
Answer:
y = 8x + 7

Explanation:
The equation of the line in slope-intercept form has the following general formula:
y = mx + c
where:
m is the slope of the line = 8
c is the y-intercept = 7

Substitute with the givens in the above formula to get the slope of the line as follows:
y = mx + c
y = 8x + 7

Hope this helps :)
4 0
3 years ago
1. Which of the following coordinates for p will make line mn perpendicular to line op in the diagram below?
TiliK225 [7]
1. (3,2)....because when finding the slope, we find the the slope of mn and the slope of op are negative reciprocals.

2. y = 5x - 7.....slope here is 5....perpendicular line has a negative reciprocal slope...so the slope has to be -1/5

y= mx + b
slope(m) = -1/5
(-10,3)...x = -10 and y = 3
now we sub and find b, the y int
3 = -1/5(-10) + b
3 = 2 + b
3 - 2= b
1 = b
so ur perpendicular equation is : y = -1/5x + 1
5 0
3 years ago
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