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8090 [49]
3 years ago
9

Jackie wants to burn 2000 calories in one week she can burn 250 calories per hour doing aerobics. How many hours should Jackie d

o aerobics that week​
Mathematics
1 answer:
Crank3 years ago
8 0

Answer:

8 hours

Step-by-step explanation:

If Jackie wants to burn 2000 calories in one week but only burns 250 calories per hour

then, to solve how many hours you have to divide

2000/250= 8

therefor Jackie has to do aerobics for 8 hours that week to burn 2000 calories

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Four squares are joined together to form one large square if the perimeter of one of the original squares of 8X units what is th
allsm [11]

Answer:

16 x units

Step-by-step explanation:

Perimeter of a original square= 8 x units

Perimeter of a square= 4× side

Side of a square = \frac{perimeter}{4}

Side of a square = \frac{8x}{4}

Side of a square= 2 x units

since four square are joined together to form a single square

So each side of a bigger square=   4 x units

Perimeter of a new bigger square= 4 × 4 x units

Perimeter of a new bigger square= 16 x units

Hence, the correct answer is 16 x units

3 0
4 years ago
At a dance camp, students must specialize in one style of dance. Of the 62 dancers at the
kicyunya [14]

Answer:

10/31

or

0.32

or

32%

Step-by-step explanation:

Students must specialize in one style of dance.

Last summer there was 62 dancers.

20 of the 62 specialized in modern dance.

Therefore the probability of a random chosen dancer to be a modern specification is 20/62.

The answer is:

Fraction:

10

---

31

Whole number:

0.32

Percent:

32%

7 0
3 years ago
What is the answer of -16 divided by 8 times 8 plus -7
BlackZzzverrR [31]

Answer:

-16

Step-by-step explanation:

5 0
3 years ago
The height of one square pyramid is 12 m. A similar pyramid has a height of 6 m. The volume of the larger pyramid is 400 m3. Det
valentinak56 [21]
A) <span>Scale factor of the smaller pyramid to the larger pyramid in simplest form:
</span>6 m / 12 m = 1/2 

b) <span>Ratio of the areas of the bases of the smaller pyramid to the larger pyramid:
</span><span>(1/2)^2 = 1/4 </span>

c) <span>Ratio of the volume of the smaller pyramid to the larger:
</span><span>(1/2)^3 = 1/8 </span>

d) <span>Volume of the smaller pyramid:
</span>(1/8) * 400 m^3 = 50 m^3
4 0
3 years ago
6) What are ED and FD?
kolezko [41]

Answer:

ED = 12 and FD = 24

Step-by-step explanation:

See the attached diagram.

The perpendicular distance between the three parallel lines are same i.e. AB = BC = 8

Therefore, the parallel lines will divide any transverse line ( say FD ) in 1 : 1 ratio i.e. will divide equally.

Therefore, FE = ED = 12 units.

Again, FD = FE + ED = 12 + 12 = 24 units. (Answer)

5 0
3 years ago
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