3 years ago

7x7+1+ 16 divided by 8- (6-7)

Mathematics

1 answer:

Veseljchak [2.6K]3 years ago

6 0

49+1+16=66

66/9=22/3

22/3 can also be expressed as 6 2/3

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Melissa drove her car 200 kilometers in 2.5 hours. At this rate

Bogdan [553]

80, divide 200 by 2.5 and you get 80. Check by multiplying 2.5 and 80, which equals 200

7 0

2 years ago

Every 6th voter gets a button. Every 7th voter gets a sticker. Which voter is the first to receive both items?

MrMuchimi

Answer:

Step-by-step explanation:

Use LCM of 6 and 7 to find a number that is the same:

6 12 18 24 30 36 42

7 14 21 28 35 42

Since 42 shows up in both, the 42th voter gets a button and sticker.

Hope this helped.

8 0

2 years ago

paul paid $25.50 for 3 cups of hot chocolate and 4 cups of hot tea. the cost of each cup pf tea was 2.3 the cost of each cup of

Bumek [7]

How To Solve It:

$2.30 x 4 = $9.20

$25.50 - $9.20 = $16.30

$16.30 ÷ 3 = $5.43

Answer:

Each cup of hot chocolate costs $5.43

I hope this helps! :)

5 0

3 years ago

I promise its easy ok

Soloha48 [4]

Answer:

1)1/3

2)3

Step-by-step explanation:

rise over run then reduce

6 0

3 years ago

Read 2 more answers

Help needed asap !!!!!!

Zinaida [17]

Answer:

b)0, yes

Step-by-step explanation:

Given:

Vectors (4,8) . (6,-3)

Finding inner product of vectors:

= 4x6 + 8x-3

=24-24

Now to check the angle between them using formula a.b=|a|.|b|cosθ

|a|= $\sqrt{4^{2} +8^{2} } \\\sqrt{16+64}$

=8.9

|b|= $\sqrt{6^{2} +(-3)^{2} } \\\sqrt{36+9}$

=6.7

Putting values of a.b=0 and |a|=8.9, |b|=6.7 in a.b=|a|.|b|cosθ we get,

0= 8.9(6.7)cosθ

cosθ =0

θ=90 degrees

Hence the two vectors are perpendicular !

7 0

3 years ago