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Korvikt [17]
3 years ago
9

john has 8 pencils. tim has 2 less pencils than john. which expression shows how many pencils tim has?

Mathematics
2 answers:
Misha Larkins [42]3 years ago
7 0

Answer:

B

Step-by-step explanation:

cuz i said

enot [183]3 years ago
4 0

Answer:

b

Step-by-step explanation:

8-2 would be the amount of pencils tim has

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the hypotenuse of a right triangle is 24ft long. The length of one leg is 20ft more than the other. Find the length of the legs.
Amiraneli [1.4K]
By the Pythagorean Theorem, the hypotenuse squared is equal to the sum of the sides squared...

h^2=x^2+y^2  

We are told that y=x+20 and h=24 so

x^2+(x+20)^2=24^2

x^2+x^2+40x+400=576

2x^2+40x+400=576

2x^2+40x=176

x^2+20x=88

x^2+20x+100=188

(x+10)^2=188

x+10=±√188

x=-10±√188, x>0 so

x=-10+√188 ft

y=10+√188 ft

If you want approximations...

x≈3.71 ft

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4 0
4 years ago
16. Simplify 4+ (-3) - 2x (-6)<br>O​
GarryVolchara [31]

Answer:

1+12x or

13

Step-by-step explanation:

If the x is an expression then

4+ (-3) - 2x (-6)

remove first parenthesis

4-3-2x(-6)

2 negatives = a postive

4-3+2x*6

multiply

4-3+12x

substract

1+12x

4+ (-3) - 2x (-6)

remove first parenthesis

4-3-2*(-6)

multiply

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substract

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3 0
3 years ago
At the toy store, 4 toy cars cost $3.84. How much does it cost to buy 20 toy cars?
Blizzard [7]

Step-by-step explanation:

To answer this, we need to find the scale factor which is to find how much one individual car is worth.

So we need to divide 3.84 and 4.

3.84 ÷ 4 = 0.96

So each car is $0.96.

To find 20 toy cars, we need to multiply 0.96 and 20.

The answer is:

$19.20

4 0
3 years ago
Read 2 more answers
(10+-7 - -2) / (-2 - -1)
Scrat [10]

Nice use of brackets. We know exactly what you mean.

(10 - 7 + 2) / (-2 + 1) Notice that with an even number of - signs, you get a plus and with and odd number you get a minus.

(5) / (-1) = - 5 answer

Edit

Numerator

10 does not change.

+ - 7 Here a plus and a minus are put together. There is 1 minus sign which is an odd number of minus signs so the 7 is minus

- - 2 Here there are 2 minus signs. They become plus because 2 is even, and an even number of minuses become a plus so you have +2

10 - 7 + 2 = 5

Denominator

-2 does not change. It remains minus 2.

- - 1 There are 2 minus signs so this becomes plus 1.

- 2 + 1 = - 1

Numerator over denominator = 5/-1 = - 5. I'll probably run out of editing time. If you still don't understand, try and pinpoint the problem and we'll keep trying until you do see it. This question is worth it.

4 0
3 years ago
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Waiting times to receive food after placing an order at the local subway sandwich shop follow an exponential distribution with a
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