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3 years ago

Please help with this question i will mark you brainliest !

Mathematics

1 answer:

Varvara68 [4.7K]3 years ago

7 0

Answer:

x -y +1 =0

Step-by-step explanation:

x - y + 1 = 0

(3,4)

so when x = 3 , y must equal to 4

3 - y + 1 = 0

move y to the other side

y = 3 + 1

y= 4

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What is 1.1 (.1 repeating) as a fraction?

melamori03 [73]

Answer:

$\frac{10}{9}$

Step-by-step explanation:

1 .1 ( .1 repeating) = $\frac{10}{9}$

Let x=0.1

Then 10x = 1.1111...

= 10 + 0.(1)

= 10+ x.

So, 9x=10 and lastly, x= $\frac{10}{9}$

6 0

3 years ago

Helpppppppp meeeeeee

natta225 [31]

Answer:

y = 14

Step-by-step explanation:

∠BCF and ∠EFH are same side interior angles and are supplementary, hence

5x - 66 +2x + 50 = 180

7x - 16 = 180 ( add 16 to both sides )

7x = 196 ( divide both sides by 7 )

x = 28

∠BCF = 5x - 66 = (5 × 28) - 66 = 140 - 66 = 74

∠ACD = ∠BCF ( vertical angles ), hence

9y - 52 = 74 ( add 52 to both sides )

9y = 126 ( divide both sides by 9 )

y = 14

6 0

3 years ago

I don’t know what to do

solong [7]

Answer:

Step-by-step explanation:

slope is what is infront of x and y intercept is the number after the slope

6 0

3 years ago

Read 2 more answers

By what percent will a fraction increase if its numerator is decreased by 30%

Nadya [2.5K]

Answer:

40%

Step-by-step explanation:

Let x = numerator

Let y = denominator

$\implies \dfrac{x}{y}$

Decreased by 30% = 100% - 30% = 70% = 70/100 = 0.7

Decreased by 50% = 100% - 50% = 50% = 50/100 = 0.5

$\implies \dfrac{0.7x}{0.5y}$

$\implies \dfrac{0.7}{0.5}=1.4$

$\implies 1.4 \ \dfrac{x}{y}$

1.4 as a percentage = 1.4 x 100 = 140%

Therefore, the percentage increase is 140 - 100 = 40%

3 0

2 years ago

How many decibels is this? show work

slavikrds [6]

Answer:

115 dB

Explanation:

1. Given equation:

$\beta =10log(\frac{I}{I_0})\\\\ I_0=10^{-12}W/m^2$

2. Given intensity:

$I=0.315W/m^2$

3. Decibels

$\beta =10log(0.315/10^{-12})\\ \\ \beta =10log(315,000,000,000)\\ \\ \beta =10(11.498)=114.98\approx 115$

4 0

3 years ago