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3 years ago

13

Maria does weightlifting for 30 seconds and then aerobics for 60 seconds. She repeats this 10 times. If she does not take any br

eaks, how many minutes does she exercise?

2 answers:

olga2289 [7]3 years ago

5 0

It took 15 minutes !!

VikaD [51]3 years ago

3 0

Answer:

15 minutes

Step-by-step explanation:

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A semi circle has a radius 8.2 cm

zaharov [31]

Answer:

Step-by-step explanation:

$Area=\frac{1}{2}*\pi *r^{2}\\\\=\frac{1}{2}*3.14*8.2*8.2\\\\=3.14*4.1*8.2\\$

= 105.57

= 105.6 cm²

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3 years ago

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Drag each interval to a box to show if the function shown is increasing, decreasing, or neither over that interval.

prisoha [69]

Answer:

Increasing

−5<x<−1

−1<x<1

Decreasing

4<x<7

−8<x<−5

Neither Increasing nor Decreasing

1<x<4

Step-by-step explanation:

8 0

3 years ago

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Mr james has cylindeical brakes measure 4 inches in diameter and are 9 inches high what is the value contain within the brakes

ra1l [238]

Answer:I think you have to multiply them

Step-by-step explanation:

So 4 times 9= 36

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3 years ago

-2(x – 3) - 2<br> simplify the expression

Inessa [10]

Answer:

-2x+4

Step-by-step explanation:

-2(x-3)-2

-2x+6-2

-2x+4

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3 years ago

Given u = LeftAngleBracket StartRoot 3 EndRoot, negative 1 RightAngleBracket and v = ⟨3, –4⟩, what is u · v?

Evgesh-ka [11]

Answer:

3√3+4

Step-by-step explanation:

Given the vectors u = <√3, -1> and v = <3, -4>

u · v = <√3, -1> *<3, -4>

u · v = 3√3 + (-1*-4)

u · v = 3√3+(4)

u · v = 3√3+4

Hence the dot product is 3√3+4

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3 years ago

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