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WITCHER [35]
3 years ago
11

Sue's tyre pressure gauge shows a reading which is 8% higher than the actual pressure. what is the actual pressure when Sue's ga

uge shows 39.42? show how you got answer
Mathematics
2 answers:
Igoryamba3 years ago
8 0
39.42=(100%+8%)=108%
x=100%

39.42/x = 108/100
x=39.42*100/108
x=36,5 
actual pressure will be 36,5
Romashka-Z-Leto [24]3 years ago
7 0

Answer:

Actual pressure = 36.5.

Step-by-step explanation:

Let the actual pressure be x.

Pressure on Sue's gauge shows 8% higher than the actual pressure.

8% more of x = x + 0.08x

= 1.08x

It is also given that the pressure on Sue's gauge = 39.42

Therefore, 1.08x = 39.42

Divide both sides by 1.08.

x = \frac{39.42}{1.08}

= 36.5

Hence, actual pressure = 36.5.

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10. A 266-hp output is required for an engine. If there is a 5% loss of power, what amount of input
marta [7]

Answer:

Amount of input horsepower needed is 279.3 hp.

Step-by-step explanation:

if there is a loss of power of 5% the base horsepower will need to be increased by same percentage so that same amount of power can be delivered.

Now to calculate 5% of 266 hp, we can write

266 ×\frac{5}{100} = 13.3 hp

Now to deliver same amount of power we will have to add 5% of 266 hp to its actual power.

So real base power which is needed to deliver 266hp output even at a loss of 5% will be = (266+13.3) hp = 279.3 hp

To know more about horsepower and percentage problem:

brainly.com/question/24585630

7 0
3 years ago
What is the common factors of 12 and 42 also 63 and 84
kaheart [24]
12|2 \\ 6 \ |2 \\ 3 \ |3 \\ 1 \\\\12=2^2*3 \\\\ 42|2\\21|3\\7\ |7\\1 \\\\42=2*3*7 \\\\ G.C.F(12;42)=2*3=6 \\\\\\\ 63|3 \\ 21|3 \\ 7 \ |7 \\ 1 \\\\ 63=3^2*7 \\\\ 84|2 \\ 42|2 \\ 21|3 \\ 7 \ |7 \\ 1 \\\\ 84=2^2*3*7 \\\\ G.C.F(63;84)=3*7=21
3 0
3 years ago
The numbers 7, 11, 12, 13, 14, 18, 21, 23, 27, and 29 are written on separate cards, and the cards are placed on a table with th
kaheart [24]

Answer:

3/10

Step-by-step explanation:

<em>Step 1 : Write the formula of calculating probability</em>

Probability = Number of favourable outcomes/Number of total outcomes

<em>Step 2 : Identify the favourable (requires) outcomes and the total outcomes</em>

  • Total outcomes are the total cards that are placed on the table = 10 cards
  • The favourable outcomes are the number of cards that have an even number on them.

       12, 14, 18 = 3 cards

<em>Step 3 : Substitute the values in the formula</em>

Probability = Number of favourable outcomes/Number of total outcomes

Probability = 3/10

Therefore, the probability of picking a card with and even number is 3/10.

!!

7 0
3 years ago
In imaginary numbers can you multiply two radicals that have negative values under them that do not square to whole numbers
ElenaW [278]
Yes, you can; based on the inherent assumption that the "two radicals that have negative values" are, in fact, "imaginary numbers" .

Take, for example, the commonly known "imaginary number":  "i" ;  which represents the "imaginary number" ;  " √-1 " .

Since:  "i = √-1" ; 

Note that:   " i² = (√-1)² = √-1 * √-1 = √(-1*-1) = √1 = 1 .
__________________________________________________
7 0
3 years ago
Read 2 more answers
Which numbers are irrational?
irakobra [83]

Answer:

√14 and √42. hope this helps.

5 0
3 years ago
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