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TEA [102]
3 years ago
15

If x = 49 , what is the value of x(x-10)

Mathematics
1 answer:
vichka [17]3 years ago
4 0

replace 49 for x so

x(x-10) becomes 49(49-10) =

49*39 = 1911

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You would use 2 number lines to compare fractions because if you were trying to see which fraction was larger than you would use a number line.
7 0
3 years ago
Read 2 more answers
Lisa wants to buy material for her dress. If she buys 7metres, she is 1 dollar short. If she buys 5metres, 5 dollars is left ove
Ede4ka [16]

Answer:

She has 15 dollar.

Explanation

If every meter costs 2 dollars, then 5 meter would cost 10 dollars and 7 meter would cost 14 dollar. Now we take a number when subtracted from 10, we get 5 dollar and when the same number subtracted from 14 we get 1 dollar left. Now if we take 15 dollar, you'll see that when you subtract 10 from it you get 5 dollar and when you subtract 14 from it you get 1 dollar. Therefore 15 satisfies the given condition in the question.

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4 0
3 years ago
Pls help I don't understand:
sineoko [7]

Answer:

Part a) T(d)=2d+30

Part b) T(6)=42\ minutes

Step-by-step explanation:

Part a) Write an equation for T (d)

Let

d ----> the number of days

T ---> the time in minutes of the treadmill

we know that

The linear equation in slope intercept form is equal to

T=md+b

where

m is the slope or unit rate

b is the y-intercept or initial value

In this problem we have

The slope or unit  rate is

m=2\ \frac{minutes}{day}

The y-intercept or initial value is

b=30\ minutes

substitute

T(d)=2d+30

Part b) Find T (6), the minutes he will spend on the treadmill on day 6

For d=6

substitute in the equation and solve for T

T(6)=2(6)+30

T(6)=42\ minutes

8 0
3 years ago
there are 45 questions on your math exam.you answered 8/10 of them correctly.how many questions did you answer correctly?
Nonamiya [84]

Answer:

you would have gotten 36 questions correct :)

6 0
2 years ago
One circle has a circumference of 12 pie Another circle has a circumference of 32 pie What is the ratio of the radius of the sma
UNO [17]

Answer:

3 : 8

Step-by-step explanation:

The ratio of the radii is equal to the ratio of the circumference, then ratio is

12π : 32π ( divide both parts by 4π )

= 3 : 8

6 0
3 years ago
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