2 years ago

Help please and thaank you

Mathematics

2 answers:

finlep [7]2 years ago

8 0

Last one D

Step-by-step explanation:

Nostrana [21]2 years ago

7 0

The answer is 180 and your welcome

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if a 14 foot tree casts a 8 foot long shadow. how tall is a tree that casts a 4 foot long shadow?

kvasek [131]

7-foot

EXPLANAT

Given:

14 foot tree

8foot shadow

4foot shadow

Let h be the height of a tee that casts a 4 foot long shadow.

Using proportion;

14 foot = 8 ft shadow

h = 4 ft shadow

Cross - multiply

8h = 56

Divide both-side by 8

h = 7 foot.

Hence, the tree is 7-foot.

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8 months ago

Consider this system of linear equations:

Vinil7 [7]

Answer:

m = -3 and b = 5

Step-by-step explanation:

y = -3x + 5

.......

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2 years ago

A Boston subway train traveling at constant speed traveled 10.1 miles in half an hour. What was the speed of the subway train? m

viva [34]

Answer: 20.2 mph

Step-by-step explanation:

Given

Train travels 10.1 miles in half an hour i.e.

Distance $d=10.1\ \text{miles}$

time $t=0.5\ hr$

we know, $\text{distance=speed}\times\text{time}$

Insert the values

$\Rightarrow 10.1=v\times 0.5\\\Rightarrow v=20.2\ mph$

6 0

2 years ago

Ralph is an electrician. He charges an initial fee of $26, plus $31 per hour. If Ralph earned $119 on a job, how long did the jo

lubasha [3.4K]

3 hours

You can turn this into an equation:

F = 26 + 31t
Where F is the money Ralph earned, and t is the number of hours he worked.

Plugging in the 119 for F, we get
119 = 26 + 31t

93 = 31t

3 = t

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3 years ago

2. What is the external probability of rolling a 4

Nataly_w [17]

Answer:

2. 1- Experimental probability of rolling a 4 = 40%

3. 2- Theoretical probability is 3% greater than experimental probability.

Step-by-step explanation:

Experimental probability of rolling a 4 = 100 × $\frac{8}{20}$

= 100 × 0.4

= 40%

Experimental probability of getting at least one tail = $\frac{72}{100}$

= 0.72

Theoretical probability of getting at least one tail = $\frac{3}{4}$

= 0.75

Theoretical probability is 3% greater than experimental probability.

6 0

3 years ago