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4 years ago

The heights of 200 adults were recorded and divided into two categories.

Mathematics

1 answer:

gladu [14]4 years ago

5 0

The answer is the first chart which would be A

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Timm drives at an average speed of 80km per hour for 3 hours and 45 minutes.

notka56 [123]

Answer:

300 km

Step-by-step explanation:

3 hours and 45 minutes = 3 $\frac{3}{4}$

Speed = 80 km per hour.

80 × 3 = 240 km

80 × $\frac{3}{4}$ = 60

240 + 60 = 300

3 0

4 years ago

The diagram represents a reduction of a triangle by using a scale factor of 0.8.

Alekssandra [29.7K]

Answer:

4.8 inches

Step-by-step explanation:

<em>See comment for complete question</em>

Represent the larger triangle with 1 and the smaller with 2.

So, we have:

$H_1 =6\ in$ -- height of 1

Required

Determine H2 --- Height of 2

To do this we apply dilation formula.

$Original * Scale\ Factor = New$

In this case:

$H_1 * Scale\ Factor = H_2$

Substitute 6 for H1 and 0.8 for Scale Factor

$6* 0.8 = H_2$

$4.8= H_2$

Hence, the height of the smaller triangle is 4.8 inches

3 0

3 years ago

A rectangular board measures 126 cm by 90 cm it can be divided into squares of equal size. Find the least number of squares the

Nat2105 [25]

A square has the same width and height, so find the gcd of 90 and 126. Here are there factors:
90:1,2,3,5,9,10,15,18,30,45,90
126:2,3,6, 7,9,14,18,21,42,63,126
18 is the largest in both so the number of squares will be
90/18 * 126/18
= 5*7 = 35

6 0

3 years ago

Cuál es la suma de los primeros 30 términos de la sucesión 1,2,3,4

Bezzdna [24]

Answer:

465

Step-by-step explanation:

1 + 2 + 3 + ... + n = n(n + 1)/2

1 + 2 + 3 + ... + 30 = 30(31)/2 = 465

7 0

3 years ago

Factorize the following<br><br> jx+sy-sx-jy

BartSMP [9]

Answer:

(x - y)(j - s).

Step-by-step explanation:

jx + sy - sx - jy

= jx - sx + sy - jy

= x(j - s) - y(j - s)

= (x - y)(j - s).

8 0

3 years ago