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shepuryov [24]
3 years ago
12

I need help with this

Mathematics
1 answer:
KiRa [710]3 years ago
3 0

Answer:

A: 56= 5y - 19

b: 68

Step-by-step explanation:

Since it is an isosceles triangle because two sides are congruent, the corresponding angles are also congruent.

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A) 2x-5y=10
r-ruslan [8.4K]

Answer:

Step-by-step explanation:So to find it you need to eliminate either x or y. 2x-5y=10 over 4x-10y=20. In order to get y to eliminate you need one equation to have a positive 10y and a negetive 10y. So you multiply both sides of the first equation by negetive 2 so it is now, -4x+10y=-20. Notice how all the numbers in both equations are opposite this gives us ims infinitaly many sollutions. So it is not A. Or b it will do the same thing. The answer is either D or C hope this helps

5 0
3 years ago
Girl 45 mins to Deliver papers on her route however if her brother have a good solid 20 minutes how long would it take if it was
LenKa [72]

Answer:

36 minutes

Step-by-step explanation:

It takes 45 mins to deliver paper on her route.

Let X be the amount of time it takes the brother to complete the route.

The brother works at the rate of 1/x route per min

The girl works at the at the rate of 1/45 route per min

Girl and brother working together works at rate of 1/20 route per min

1/x + 1/45 = 1/20

Multiply through by 180x

180 + 4x = 9x

4x - 9x = -180

-5x = -180

x = -180 / -5

x = 36 mins.

It takes the brother 36 minutes to complete route alone.

7 0
3 years ago
The sum of two numbers is 25. One number is twice the second number plus seven. What are the two numbers ?
Hoochie [10]

Answer:

the two numbers are 19 and 6

Step-by-step explanation:

so we know that there are two numbers that added together give us 25

x+x=25


one of the numbers is twice the amount of the second plus 7

(2x+7)+x=25


simplify 2x+7+x

3x+7=25


subtract 7 from both sides

3x=18


divide 3 by both sides

x=6


and there is your answer.

4 0
3 years ago
Brandon has a stack of books on his desk. The first book has 10 pages. The second book has twice as many pages. The third book h
Svetach [21]

Answer:

1280 pages

Step-by-step explanation:

You simply continue the pattern

40 × 2

80 × 2

160 × 2

320 × 2

640 × 2

= 1280

6 0
2 years ago
The function y=−16x2+v0x models the height of a football in feet x seconds after a player kicks it. In the equation of the funct
Vesna [10]
16x^2-vox=0 when x=2 so

16x^2-vox=0

64-2vo

64=2vo

vo=32 ft/s

3 0
3 years ago
Read 2 more answers
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