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1 year ago

Write the equation of a line in SLOPE INTERCEPT FORM with the following information.

Mathematics

2 answers:

kotykmax [81]1 year ago

7 0

Answer:

y = 1/2x-1/2

Step-by-step explanation:

y = mx+b is the slope intercept form of a line

where m is the slope and b is the y intercept

y = 1/2x +b

We can substitute the point (3,1) in for x and y

1 = 1/2(3) +b

2/2 = 3/2 +b

2/2 -3/2 = b

-1/2 =b

y = 1/2x-1/2

yawa3891 [41]1 year ago

6 0

Y=1/2x+b
1=1/2(3)+b
b= -1/2

Answer is y=1/2x -1/2

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4/7 of the children in a pool are girls. What is the ratio of girls to boys?

marshall27 [118]

4/7 of the children in the pool are girls
3/7 of the children in the pool are boys
4/7:3/7
4:3 is the ratio of girls to boys

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2 years ago

What is the value of the expression below when x = 5 and y = 2? X + 6y

Vedmedyk [2.9K]

Instead of X put 5 and instead of y put 2
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2 years ago

Sarah answered 24 questions on her test correctly and earned an 80%. How many questions were on the test?

MaRussiya [10]

Answer:

43 questions in total

Step-by-step explanation:

the original equation with the unknown (total number of questions on the test) will look like this

$\frac{total \: number \: of \: questions \: on \: exam}{24 \: answered \: questions} = 80\%$

we know this because to work out a percentage in the 1st place you need the total ÷ number (in this case it's ÷ how many questions out of the total she did answer)

now you rearrange.

you need to move the 24 to get the total on it's own here's how you do it

$\frac{tot \: num \: of \: qs}{24} \times 24 = 80\% \times 24$

what you do to one side of equation you have to do to the other. the 24 and 24 on the left will cancel because 24÷24=1 and we don't write

got mum of Q's x 1= 80 x 24

now you convert % to decimal

$80\% \times 100 = 0.80$

replace

$tot \: num \: qs \: = 24 \times 0.80 = 19$

now you take the original and + the 19

$24 + 19 = 43$

therefore there are a total of 43 questions on the exam

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3 years ago

Rectangle with area of 12 square units is dilated by a scale factor of 3. What is the area?

Olegator [25]

Answer:

36 units²

Step-by-step explanation:

rectangle with area of 12 square units is dilated by a scale factor of 3. What is the area?

Scale factor = Dimension of the new shape ÷ Dimension of the original shape.

we use the inverse formula

12 * 3 =

36 units²

-----------------------

check

36 : 12 = 3

the answer is good

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1 year ago

Renata wins a $20 gift card to an online music site. After Renata purchases 16 songs, the gift card has a remaining balance of $

Sveta_85 [38]

$20 bought 16 songs
Therefore each song costs $20/16 = $5/4 = $1.25
So:
2 songs would cost 2 * $1.25
3 songs would cost 3 * $1.25
...
x songs would cost x * $1.25

Since Renata started with $20, then her balance (y) after buying x songs would be:

y = 20 - 1.25*x

3 0

2 years ago

Read 2 more answers