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allochka39001 [22]
3 years ago
6

Please help me I know it's A but I don't know why.​

Mathematics
2 answers:
frez [133]3 years ago
6 0

Answer:

Maybe try explaining that if you narrow it down and simplify the numbers by dividing them by 8 or somewhere around there.

Debora [2.8K]3 years ago
3 0

Answer:

it is a

Step-by-step explanation:

40r2-63r + 18

40r2-15r-48r + 18

solution (5r -6)(8r -3)

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Which math operation determines the following pattern?
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it times 4

Step-by-step explanation:

so each time you would multipley by 4

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3 years ago
What is the average of 69 and 50?<br>PLEASE HELP<br>​
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(69+50)/2
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3 years ago
How to construct 75°​
Rasek [7]

answer:

in order to construct 75°, you need to use a protractor and a compass

step-by-step explanation:

here is a step-by-step explanation from an online source

  • step 1: draw a line segment with endpoint O and A
  • step 2: draw an arc with O as centre cutting the line segment OA at point B with a compass
  • step 3: keeping the radius same, draw an arc with B as centre cutting the arc at C
  • step 4: keeping the radius same, and C as the center, draw an arc intersecting the arc drawn in the previous step at D
  • step 5: with any radius, draw two arcs with C and D as a center. intersect these two arcs at E
  • step 6: join OE. angle EOA is the angle with measurement of 90 degrees
  • step 7: now the line OE intersect the arc at the point F
  • step 8: taking F and C as a center, make an arc with a radius of more than half of the measurement FC. the arc intersects at point H
  • step 9: join the point H and O. angle HOA is the angle obtained of measurement 75 degrees
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6 0
3 years ago
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What are Constant of Proportionality?
d1i1m1o1n [39]
The constant that changes proportionality into equality...
5 0
4 years ago
there are students in a school. This number is 15% more than it was last year. Calculate the number of students last year
ANTONII [103]

Answer: See explanation

Step-by-step explanation:

Your question isn't complete but let's help out by giving some values to the question.

Let's say there are 230 students in a school. This number is 15% more than it was last year. Calculate the number of students last year.

Let the number of students last year be x.

Since there's a 15% increase, this implies that (100% + 15%) = 115% of x equals to 230. This will be:

115% of x = 230

115% × x = 230

115/100 × x = 230

1.15x = 230

x = 230/1.15

x = 200

There were 200 students last year.

Just assign the missing values and use the above method and you'll get your answer.

8 0
3 years ago
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