MATHEMATICS MIDDLE SCHOOL

Find the reciprocal of −2/5.

Answers

Answer 1

Answer:

The answer is 5/-2. Hopefully that helped.

Answer 2

Answer:

the reciprocal is 5/-2

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A store sells 8 cans of nuts for $20 how much would it cost to buy 7 cans of nuts?

Answers

The answer to this question is 17.5. Because i divided 20 by 8 and got 2.5 and times it by 7.
17.5

To get your answer you divide $20 by 8 to get $2.50 then you multiply it by 7 to get $17.50. Hope I helped

Help me plzzzzzzzzzz

Answers

you should multiply 4 by 9 and then add to 1 so you gonna have : 37/9 :))
i hope this is helpful
have a nice day

4 1/9
= 4+ 1/9
= 4* (9/9)+ 1/9 (because 9/9=1, it won't change the result).
= (4*9)/9 + 1/9
= 36/9+ 1/9
= 37/9

The final answer is 37/9~

PLEASE HELP! THANKS!The measures, in degrees, of the 3 angles of a triangle are given by 2x +1, 3x - 3, and 9x.
What is the measure of the smallest angle?

A.) 13 degrees
B.) 27 degrees
C.) 36 degrees
D.) 117 degrees

please show how to solve this I GIVE THANKS!!!

Answers

if you add everything up then
14x-2=180
14x=182
x= 13

So the angles would equal
2(13)+1= 27
3(13)-3= 36
9(13)= 117
The angles are 27 36 and 117
Which makes the smallest angle 27 which is B.

You first have to know that the measure of the three angles of a triangle= 180add the terms and equal them to 1802x+1 + 3x-3 =9x= 18014x-2 = 18014x= 182x=13 This is not what you are looking for, you need tosubstitute 13 in the original measures2 (13) +1= 27 degrees3(13) -3= 36 degrees9 (13) = 117 degreestherefore the smallest angle is 27 degreesif you add all three angle measure it will = 180 degreesHope this helps you

If we draw a card from a standard 52-card deck, what is the probability that the card is neither a heart nor a queen?

Answers

So here we are being asked to draw a card that isn't a heart or a queen... the amount of cards that are not hearts or queens out of a 52 card deck is 36. So that makes the probability 36/52 if we want to make that a percent then we have to change the denominator to a 100 we end up with this problem:

36/52 = x/100

There are many ways we can solve this. One way being cross multiplying, which I think is the easiest.

If our problem is a/b = c/d we multiply a and d then we multiply b and c

Plugging our original problem into that, we 36 times 100 and 52 times x. That gives us 3600 and 52x

This is now an algebraic problem.

52x=3600

First step, divide each side by 52

We get x=69.2 rounded to the nearest tenth.

So our probability is about 69/100 or 69%

Any Questions?

proability is (desired outcomes)/(total possible outcomes)

total possible outcomes is 52 cards

out of those 52 cards, how many are NOT heart or queen?

hearts is a suit, so 1/4 of the deck (or 52/4=13 cards) are not what we want

queens, there are 4 queens in a deck, but one of them is a queen of hearts. to avoid doublecount, say 3 queens

so total of 13+3=16 cards to not pick

so we have 52-16=36 cards we want to pick

probablity=36/52=18/26=9/13≈63.23%

Find the equation of the straight line passing through the point (3,5) which is perpendicular to the line y=-3x+2

Answers

Answer:

y = $(1)/(3)$ x + 4

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y-intercept )

y = - 3x + 2 is in this form with slope m = - 3

given a line with slope m then the slope of a line perpendicular to it is

$m_(perpendicular)$ = - $(1)/(m)$ = - $(1)/(-3)$ = $(1)/(3)$

y = $(1)/(3)$ x + c ← is the partial equation

to find c substitute (3, 5 ) into the partial equation

5 = 1 + c ⇒ c = 5 - 1 = 4

y = $(1)/(3)$ x + 4 ← equation of perpendicular line

I need this explained

Answers

$\text{Hey there!}$

$\text7x}^2\text{- 32x - 60}$

$\text{The answer is: (7x + 10)(x - 6)}$

$\text{Because if you follow the step to the answer (first you have to distribute}$ $\text{then combine the like terms after distributing) after all of that you SHOULD}$ $\text{get the equation back!}$