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Bad White [126]
2 years ago
12

WHO WILL DO IT CORRECTLY 25 POINTS!!!!GEOMETRY GRADE 7​

Mathematics
1 answer:
Setler79 [48]2 years ago
7 0

1. a) 2 : x = 1 : 100

       1 : 0.5x = 1 : 100

       0.5x = 100

       x = 200

   b) x : 2.25 = 1 : 12

       2.25 = 12x

       x = 0.1875

   c) 1.6 : 6.4 = 1 : x

       1 : 4 = 1 : x

       x = 4

   d) 1.5 : x = 1 : 500

        x = 500 x 1.5

        x = 750

2. Since 1 cm = 2 inches and the height given is 4 cm, the bottle's height is (2 x 4) inches, that is, 8 inches.

3. Since 1 cm = 0.8 m, the length of the car is (5 x 0.8) m = 4 m.

I hope this helps! If you have any questions, feel free to ask.

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M is the midpoint of AB, AM=3x+3 and AB=8x-6 What is the length of MB
Xelga [282]
If it's the midpoint then MB=3x+3, but to find length set AM equal to one half AB
3x+3=(8x-6)(1/2) or 2(3x+3)=8x-6

2(3x+3)=8x-6
6x+6=8x-6
12=2x
X=6
8 0
3 years ago
Jason's part-time job pays him $105 a week. If he has already saved $325, what is the minimum number of weeks he needs to work i
Art [367]

Jason's part-time job pays him $105 a week

He got an amount of 105 dollars per week

Thhe cost price of the Dit bike = $900

The saving amount he had = $325

So, The amount he require more is the difference in the cost price of the bike to the saving amount

Require amount = 900-325

Require Amount = $575

Since he get the $105 per week

We need to find the number of weeks to get an amount of $575

So, divide the total required amount by the amount in one week he get

\begin{gathered} \text{ Number of w}eek\text{ =}\frac{Total\text{ Amount}}{Amount\text{ he get p}er\text{ week}} \\ \text{Number of w}eek\text{ =}\frac{575}{105} \\ \text{Number of w}eeks\text{ =}5.47 \\ \text{Number of we}eks\text{ }\approx6 \end{gathered}

So, he neeed to wokr for 6 weeks to pay for the dirt bike

Answer : 6 weeks

8 0
1 year ago
What is the area of the regular hexagon with a side length of 3 cm and an apothem of 2.6 cm? A. 15.6 cm2 B. 23.4 cm,2 C. 46.8 cm
yarga [219]
Regular hexagons have all equal sides and angles 
=((3cmx2.6)/2) x 6
=( 7.8/2) x6
= 3.9 x 6                The answer is B. 23.4cm 
= 23.4 
7 0
3 years ago
Read 2 more answers
In the following picture, (QS) ̅ and (PR) ̅ are chords of the circle. Find the length of QS. (Remember to show formulas/equation
Inessa [10]
<h3>Answer: QS is 37 units long</h3>

=========================================

Explanation:

PN = 24 and NR = 14 are pieces of the chord PR. The two pieces multiply to some value. At the same time, the other two pieces QN = 21 and NS = 2x-4 also multiply to that same value. In short, the chord pieces multiply to the same number. This is known as the intersecting chord theorem.

PN*NR = QN*NS

24*14 = 21*(2x-4)

336 = 42x-84

336+84 = 42x-84+84 .... add 84 to both sides

420 = 42x

42x = 420

42x/42 = 420/42 ...... divide both sides by 42

x = 10

We know that x = 10 so we can use it to find the length of NS

NS = 2x-4

NS = 2*10-4

NS = 20-4

NS = 16

Therefore,

QS = QN + NS

QS = 21 + 16

QS = 37

--------

note: as a check,

PN*NR = QN*NS

24*14 = 21*16

336 = 336

we get a true equation, so we have the proper values

4 0
3 years ago
A warehouse contains 7250 books in it. Books are being shipped from the warehouse such that the number of books decreased by 150
Lapatulllka [165]

Using an linear function, we have that:

  • The inequality is: -150D + 7250 < 2000
  • The warehouse will start printing more books on the 35th day, hence it won't be printing on the 30th day.

<h3>What is a linear function?</h3>

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0, and can also be interpreted as the initial value of the function.

In this problem:

  • A warehouse contains 7250 books in it, hence b = 7250.
  • Books are being shipped from the warehouse such that the number of books decreased by 150 per day, hence m = -150.

Thus, the number of books each day is modeled by the following function:

B(D) = -150D + 7250

It will begin to print more books when the warehouse contains less than 2000 books, hence, the inequality is:

B(D) < 2000

-150D + 7250 < 2000

Then:

-150D < -5250

150D > 5250

D > \frac{5250}{150}

D > 35

The warehouse will start printing more books on the 35th day, hence it won't be printing on the 30th day.

More can be learned about linear functions at brainly.com/question/24808124

7 0
2 years ago
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