3 years ago

Please help!!! Will give brainliest!!

Mathematics

1 answer:

Slav-nsk [51]3 years ago

7 0

It’s B the answer is b hope it helps

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Mr.Martin is giving a math test next period.The test,which is worth 100 points,has 29 problems. Each problem is worth either 5 p

blsea [12.9K]

Answer:

The second option

Step-by-step explanation:

x+y=29

5x+2y=100

then y=29–x

since 5x+2y=100

then 5x+2(29–x)=100

then 5x+58–2x=100

then 3x+58=100

then 3x=100–58

then 3x=42

then x=42/3

then x=14

then y=29–14=15

5 0

4 years ago

Read 2 more answers

An athlete ran 200 meters in 19.19 seconds. Suppose that he ran the first half of that race (around a curve) in 10.75 seconds. H

SOVA2 [1]

The time needed to run the second half of the race is 8.44 s

Step-by-step explanation:

The total distance covered by the athlete during the race is

d = 200 m

And the total time taken to cover this distance is

T = 19.19 s

We also know that the time the athlete needs to cover the first half of the race is

$t_1 = 10.75 s$

Also, we know that

$T=t_1 + t_2$

where $t_2$ is the time the athlete takes to cover the second half of the race.

Re-arranging this equation and susbtituting the values, we find the value of t2:

$t_2 = T-t_1 = 19.19-10.75=8.44 s$

Learn more about uniform motion:

brainly.com/question/8893949

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5 0

3 years ago

Someone plz help meee

ANTONII [103]

774881, 88828 thank me plz

5 0

3 years ago

21/7= ?/1 i don't know the answer please help

kenny6666 [7]

Answer:?=3

Step-by-step explanation:

all you do is basic division... :)

8 0

3 years ago

Read 2 more answers

How much would you go up or down if the road stayed at 8% for one mile?

Ghella [55]

An 8% slope up is 422.4 feet up in one mile.

An 8% slope down is 422.4 feet down in one mile.

1 mile = 5,280 feet

8% of 1mile = 0.08 x 5,280-ft = 422.4-ft

3 0

4 years ago