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Sauron [17]
2 years ago
9

-3y+15 2y+4 _____ = ______ 6 7

Mathematics
1 answer:
fiasKO [112]2 years ago
8 0
To get rid of denominators, multiply by (6•7) on both sides.
This yields: 7(-3y+15)=6(2y+4)
-21y+105=12y+24
105-24=12y+21y
81=33y
Y=27/11
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Pls answer 9-16 show work will give brainliest
iren [92.7K]

9. $12,50

10. $17.50 (ripoff lol)

11. Clearly Alastair, they got some strong muscles

12. Taryn would be charging $15 an hour and alastair $24.50 an hour. $735 divided by $15 an hour equals 49 hours for Taryn. $735 divided by $24.50 an hour equals 30 hours for Alastair.

13a. 5 minutes to make a sculpture and 7 balloons in a sculpture

13b. Tomas uses 1.4 balloons a minute

13c. 14 balloons (tip. when multiplying a decimal by 10, 100, etc, just move the decimal for the number of zeroes.) 1.4x10 = 14. Simply move the decimal to the right one because there is one zero in 10.

13c blanks. The first blank is 1.4 and the second blank is 14

14. 8 pound bag of dog food is a way better deal!

15. $10.50

16a. The price for 25 whistles is $0.85 each, 50 whistles for $0.72 each, or 80 whistles for $0.75 each. The difference between the highest number and lowest number is $0.13 or 13 cents.

16b. $0.34 or 34 cents

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I hope all of this helped! It took forever!


8 0
3 years ago
12. What property is preserved in a dilation?
ryzh [129]

Answer:

please mark brainliest ! It means that dilations map angles to angles, and the dilation preserves the measures of the angles. dilations. Dilations map lines to lines, rays to rays, and segments to segments.

5 0
3 years ago
Answer this correctly I’ll give brainalist + 10 points
Ganezh [65]

the sum of supplementary angles is 180 degree

therefore

x +2x = 180°

3x = 180

X = 180/3 = 60°

the value of X is 60°

5 0
2 years ago
72 The length of a side of a triangle is 36. A line parallel to that side divides the triangle into two parts of equal area. Fin
katrin [286]

Answer:

  18√2

Step-by-step explanation:

The smaller triangle sharing a vertex with the larger one is similar and half the area. That means its linear dimensions are √(1/2) = (√2)/2 times those of the larger triangle.

The line segment of interest has length ...

  36 × (√2)/2 = 18√2

_____

The ratio of area of similar figures is the square of the ratio of their linear dimensions. Thus the ratio of linear dimensions is the square root of the ratio of area.

6 0
3 years ago
A 12-pound bag weighs more than a 200-ounce bag. True or false
Anastasy [175]

Answer:

false

Step-by-step explanation:

200oz= 12.5 pounds

7 0
2 years ago
Read 2 more answers
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