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Nikitich [7]
3 years ago
13

Marcos is 7 years older than his sister, Rosa. The sum of their ages is less than 3 times Rosa's age. How old is each?​

Mathematics
1 answer:
jeyben [28]3 years ago
4 0

Answer:

The sum of their ages is 1 less than 3 times Rosa's age.

15 + 8 = 3(8) - 1

Step-by-step explanation:

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PLEASE SHOW WORK SO I UNDERSTAND THANKS :)<br> -0.3 * -(11)/(30)
Kaylis [27]

Answer:

0.11

Step-by-step explanation:

The answer would be 0.11, i just used a calculator lol

8 0
2 years ago
Paul has 7 piles of sports cards. There are3 basketball. football. and4 baseball cards in each pile. How many total sports cards
aalyn [17]
Paul has 70 Total sport cards.

3 (Baseball) + 3 (Football) + 4 (Baseball) = 10 (Total cards per pile) × 7 (Total Piles) = 70 (Total Cards

3+3+4=10×7=70

(All shown work is this ^)

If I'm right please help me out by following me. Thank you for your wonderful question~!
8 0
3 years ago
Read 2 more answers
Consider the following function. f(x) = |x − 9| Find the derivative from the left at x = 9. If it does not exist, enter NONE. -1
nydimaria [60]

Answer with Step-by-step explanation:

We are given that

f(x)=\mid x-9\mid

f(x)=-(x-9) when x<9

f(x)=x-9 when x\geq 9

LHD

\lim_{x\rightarrow 9-}f'(x)

=-\lim_{x\rightarrow 9-}(x-9)=-1

RHD

\lim_{x\rightarrow 9+}f'(x)

=\lim_{x\rightarrow 9+}(x-9)=1

LHD\neq RHD

Hence, the function is not differentiable at x=9

8 0
3 years ago
A radar gun was used to record the speed of a swimmer (in meters per second) during selected times in the first 2 seconds of a r
Natalka [10]
Trapezoidal is involving averageing the heights
the 4 intervals are
[0,4] and [4,7.2] and [7.2,8.6] and [8.6,9]

the area of each trapezoid is (v(t1)+v(t2))/2 times width

for the first interval
the average between 0 and 0.4 is 0.2
the width is 4
4(0.2)=0.8

2nd
average between 0.4 and 1 is 0.7
width is 3.2
3.2 times 0.7=2.24

3rd
average betwen 1.0 and 1.5 is 1.25
width is 1.4
1.4 times 1.25=1.75

4th
average betwen 1.5 and 2 is 1.75
width is 0.4
0.4 times 1.74=0.7

add them all up
0.8+2.24+1.75+0.7=5.49

5.49
t=time
v(t)=speed
so the area under the curve is distance
covered 5.49 meters
8 0
3 years ago
Zane way to color meatballs during a science class the blue ball weighs 7 lb in the green ball weighed 0.69 lb in the same place
Umnica [9.8K]

you would just add both of them together so the weight would be 7.69 Ibs

7 0
3 years ago
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