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3 years ago

6.8 * 10(2) keep in note that "2" is an exponent in this question

Mathematics

1 answer:

Virty [35]3 years ago

5 0

Answer:

Step-by-step explanation:

6.8 × $10^2$

= 68

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Given the function f(x) = 4(2)x, Section A is from x = 1 to x = 2 and Section B is from x = 3 to x = 4.

Ksju [112]

F(x) = 4(2)x
fx = 8x
f = 8

5 0

3 years ago

Two skiers are 30 kilometers apart and head towards each other. They meet in 2 hours. If the second skier is 5 kilometers per ho

DENIUS [597]

Answer:

Speed of first skier = 5 km/h

Speed of second skier = 10 km/h

Step-by-step explanation:

Given:

Distance between skiers = 30 km

Time after which they meet = 2 hours

Second skier is 5 km/h faster than the first skier.

To find speed of each skier.

Solution:

Let the speed of first skier be in km/h = $x$

<em>Distance covered in km 2 hours will be = $Speed\times time=x\times 2=2x\ km$ </em>

Speed of second skier in km/h can be given as = $x+5$

<em>Distance traveled by second skier after 2 hours will be = $Speed\times time=(x+5)\times 2=(2x+10)\ km$ [Using distribution]</em>

Since, the skiers were 30 km apart initially, so the total distance covered by both of them when they meet after 2 hours will be = 30 km

Thus, we have:

$2x+2x+10=30$

Solving for $x$

$4x+10=30$

Subtracting both sides by 10.

$4x+10-10=30-10$

$4x=20$

Dividing both sides by 4.

$\frac{4x}{4}=\frac{20}{4}$

$x=5$

Speed of first skier = 5 km/h

Speed of second skier = $5+5$ = 10 km/h

8 0

4 years ago

Expand

Artyom0805 [142]

The distance between the ships is 26.65.

<h3>How to illustrate the distance?</h3>

Based on the information given, after 3 hours, the distance of ship B will be:

= 20 + (17 × 3)

= 71.

A = 21 × 3 = 63

Well calculate the square root which will be:

A² + B² = 71² + 63²

= 5041 + 3969

= 9010

Therefore, ✓9010 = 94.92

Finally, the distance will be:

= (63 × 21) + (71 × 17) / 94.92

= (1323 + 1207)/94.92

= 26.65

Learn more about distance on:

brainly.com/question/2854969

#SPJ1

7 0

2 years ago

The height, in inches, of each of three boys is 54.0, 48.5, and 46.0, respectively. The height of the fourth boy is denoted by h

Bingel [31]

Answer:

53.5

Step-by-step explanation:

c = the height of the first 3 boys.

c = 54 + 48.5 + 46

c = 148.5

Now you add a fourth boy. His height is h.

A(h)= (c + h)/d

d = the total number of boys which is 4.

The new average is 50.5

A = (c + h)/d

50.5 = (148.5 + h) / 4 Multiply both sides by 4

202 = 148.5 + h Now subtract 148.5 from both sides

202 - 148.5 = h

h = 53.5

4 0

3 years ago

PLZ HELP ME WITH THSI QUESTION!

natita [175]

Answer:

104 ft

Step-by-step explanation:

$89 + 15 = 104$

6 0

3 years ago

6.8 * 10(2) *keep in note that "2" is an exponent in this question*

6.8 * 10(2) keep in note that "2" is an exponent in this question