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Blababa [14]
3 years ago
8

2 – Efetue:

Mathematics
1 answer:
BartSMP [9]3 years ago
5 0

A) 7x(-5)

A multiplicação de um numero positivo por um numero negativo resulta em um numero negativo: (+) x (-)=(-)

(7x5)

Multiplique os valores

-35

resposta para  A: -35

B)(-9)x(-8)

A multiplicação dois números negativos resulta em um numero positivo : (-)x(-)=(+)

9 x 8

Multiplique os valores

72

Resposta para B :72

C)(-15) : 5

A divisão de um numero negativo por um positivo resulta em um numero negativo: (-):(+)=(-)

-(15:5)

Divida os números

-3

Resposta para C: -3

D) 125 : 25

Divida os números

5

Resposta para D: 5

POR FAVOR ME MARCA BRAINLIEST

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Flura [38]

Answer:

The speed of car in miles per minute is  \frac{2}{3} miles per minute and

The speed of car in mile per hour is 40 miles per hour,

Step-by-step explanation:

Given as :

The distance cover by car = 2 \frac{1}{3} = \frac{7}{3} miles

The Time taken by car to cover distance =  3 \frac{1}{2} min =  \frac{7}{2} min

The speed o car in miles per minute = S miles/min

So, Speed = \dfrac{\textrm Distance}{\textrm Time}

Or, S = \frac{\frac{7}{3}}{\frac{7}{2}} mie per min

∴  S = \frac{2}{3} miles per minute

Now, Let The speed of car in miles per hour = x miles/h

So, Time in hour = \frac{7}{2} × \frac{1}{60} = \frac{7}{120} hours

So ,  Speed = \dfrac{\textrm Distance}{\textrm Time}

Or, x = \frac{\frac{7}{3}}{\frac{7}{120}} miles per hours

Or, x = 40 miles per hours

Hence The speed of car in miles per minute is  \frac{2}{3} miles per minute and the speed of car in mile per hour is 40 miles per hour, answer

7 0
4 years ago
Which quanitity could go in the blank to make the equation below true?
Yakvenalex [24]
It will be c. 2x because x+2x = 3x, and if you add that by 2x it will give you 5x.
5 0
3 years ago
(d) Let p represent the probability of a successful long hit. What values of p will make the long hit better than the short hit
seropon [69]

Answer:

The probability of successful  long hit is greater than 0.7083

Step-by-step explanation:

Solution

The expected value for long hit is given below

P (successful hit) * 4.2 + P (Unsuccessful hit) *5.4

so,

= P * 4.2 + (1-p) * 5.4

= 5.4 - 1.2p

Now,

If the expected value of long hit is less than  that of the short it

Then,

5.4 - 1.2p <4.55

P> (5.4 - 4.55)/1.2

P> 0.7083

Therefore the probability of successful  long hit is greater than 0.7083

Note:

Due to my research and findings to this example, the complete question for  is attached below, i solved or Question 2(d) only

8 0
3 years ago
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love history [14]

Answer:

Function 1 has a greater slope and greater<em> y</em>-intercept than Function 2.

Step-by-step explanation:

Function 1

Slope: 1/3

<em>y</em>-intercept: 2

Function 2

Slope: -2/4

<em>y</em>-intercept: -2

3 0
3 years ago
Donovan is measuring the angles of a triangle. He uses the first two angles and gets 10° and 120° what should be the measurement
scoundrel [369]

Answer:

50°

Step-by-step explanation:

<u>The sum of a triangles' angles is 180°</u>

Now set up an equation:

180 - (10 + 120) = ___

180 - 130 = 50°

5 0
3 years ago
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