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3 years ago

What is the value of x in the a.p x+1,2x-1 and x+5

Mathematics

1 answer:

xxTIMURxx [149]3 years ago

7 0

Answer:

x = 4

Step-by-step explanation:

Since the terms are in an arithmetic progression then there is a common difference between consecutive terms, that is

2x - 1 - (x + 1) = x + 5 - (2x - 1) ← distribute parenthesis on both sides

2x - 1 - x - 1 = x + 5 - 2x + 1, that is

x - 2 = - x + 6 ( add x to both sides )

2x - 2 = 6 ( add 2 to both sides )

2x = 8 ( divide both sides by 2 )

x = 4

The 3 terms are 5, 7, 9

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kozerog [31]

X=4

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3 years ago

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2 years ago

What is the solution set of the equation 3x^2-34x-24=0?

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3 years ago

18% of the the students at a school are in year 8 and 16% of the students are in year 9. If the school has 126 tera 8 students,

yarga [219]

Answer:

112

Step-by-step explanation:

The general form of all percentage questions is: the chunk= (some percentage) (of the whole), or c=p*w

We know that 18% of students are 8th grade and that is 126 students, so p = 0.18 and c=126 (126 students are 18% of the whole school)

126 = (0.18)w, divide both sides by 0.18

126/(0.18) = w = 700

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3 years ago

PLEASE HELP ME WILL MARK BRAINLIEST! Town planners are planning a 500 foot by 700 foot parking lot by making a scale drawing tha

Scilla [17]

Answer:

The approximate value of the scale is 1:67

or the actual value without approximation is 1: 66 2/3 ( 66 while number , two over three)

Step-by-step explanation:

Here, we want to figure out the scale in inches of the drawing to the actual object.

The actual object is 500 ft by 700 ft

while the drawing is 90 inches by 126 inches

Mathematically, we know that 12 inches = 1 foot

So the actual object will be;

500(12) by 700(12)

= 6000 inches by 8400 inches

Now let’s make a division to get the scale;

6000/90 by 8400/126

we get 66.67 as answers on both ends

This is approximately equal to 67

So the scale we have here is 1:67

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3 years ago