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Andreyy89
3 years ago
13

Please help. I will reward brainly

Mathematics
2 answers:
katovenus [111]3 years ago
8 0

Positive, 72 minus negative 9 is the same thing as 72+9, which equals 81. So the answer is positive

Nezavi [6.7K]3 years ago
3 0
Positive. Here's a trick I use.

- + = -
- - = +

You need two lines to make a +, and you can't make one with just -
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A function has the function rule y = x - 7. If the input is 4, what is the output?
Alex_Xolod [135]

If you want to evaluate a function at a specific input, you have to substitute the generic variable with that specific value.

So, if you substitute "x" with "4", your function will output

y=4-7=-3

8 0
3 years ago
Do, 2(x, y)+(3,5).<br> The point (x, y) is<br> (1,3)<br> (-3/2, -5/2)<br> (-6, -10)
Fittoniya [83]
Yes this is correct, you used the right formula to answer this, good job
7 0
3 years ago
You are in the electronics store purchasing a video game that retails for 45$ the sales tax charged on the game is 2.70 what is
Katyanochek1 [597]

Answer:

6%

Step-by-step explanation:

let 't' = tax rate

45t = 2.7

t = 2.7/45

t = .06

8 0
2 years ago
2.) FIND EF.
Naddika [18.5K]

The measure of EF from the given diagram is 6 units

<h3>Secant secant theorem</h3>

The theorem states that if two secants are drawn from an external point to a circle, then the product of the measures of one secant's external parts is the same as the product of the other external part.

Mathematically according to the given figure;

4(4+2x) = 5(5+x)

Expand

16 + 8x = 25 + 5x

Collect the like terms

8x - 5x = 25 - 16

3x = 9

Divide both sides by 3

3x/3=. 9/3

x = 3

Find EF

EF = 2x

EF = 2(3) = 6

Hence the measure of EF from the given diagram is 6 units

Learn more on secant theorem here: brainly.com/question/10732273

#SPJ1

8 0
2 years ago
A road-roller levels 3000m of road in 4hours How many metres does it level in a 24 hourday? please help me​
Naya [18.7K]

Answer:

18,000 meters

Step-by-step explanation:

We know:

  • v = 4 and t = 24

Substitute:

{ v = 4      ⇒ INTO FORMULA ⇒ D = V × T : D = 4 × 24

{ t = 24

Cross out the common factor:

⇒ 6 × 3000

Calculate the product or quotient:

⇒ 18,000

7 0
2 years ago
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