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3 years ago

3(y-1)=y-11 plz solve this equation with explaination

Mathematics

2 answers:

Fittoniya [83]3 years ago

4 0

Answer:

-14

Step-by-step explanation:

3(y-1)=y-11

3y-3=y-11

y=3-11

y= -14

Multiply 3 into (y-1)

Then substitute 3 for Y

bringthe 3 over the equal sign to y

3y-3 = -3-11

y = -14

stellarik [79]3 years ago

3 0

3(y-1)=y-11

Distribute:
3y - 1 = y- 11

Add 11 to both sides

3y - 12 = y

subtract 3y on both sides

-12 = -2y

Divide by 2y

y= 6

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RoseWind [281]

Answer:

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Step-by-step explanation:

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3 years ago

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DEF is a dilation image of ABC. What is the scale factor?

horsena [70]

Answer:

Option (2)

Step-by-step explanation:

ΔDEF is a dilation image of ΔABC.

Rule for the dilation,

Scale factor = $\frac{\text{Length of one side of the image triangle}}{\text{Length of one side of the original triangle}}$

= $\frac{DE}{AB}$

= $\frac{4}{8}$

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Therefore, scale factor by which ΔABC is dilated is $\frac{1}{2}$ .

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2 years ago

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marshall27 [118]

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3 years ago

Math 2 Of high school

Daniel [21]

Answer:

B. BC = 18 so ∆ABC ～ ∆DEF by SAS

Step-by-step explanation:

$\bf \cfrac{AB}{DE} = \cfrac{BC}{EF}$

$\bf \cfrac{15}{10} = \cfrac{BC}{12}$
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2 years ago

charissa ordered 3 cans of lemonade for each person at her party. She also ordered 1 pizza for every 4 people. If she ordered 6

krek1111 [17]

Answer:

72 cans

Step-by-step explanation:

step 1

Find the number of people

we know that

She ordered 1 pizza for every 4 people

using proportion

Find out the number of people for 6 pizzas

$\frac{1}{4}=\frac{6}{x}\\\\x=24\ people$

step 2

Find the number of cans ordered

we know that

Charissa ordered 3 cans of lemonade for each person

using proportion

Find out the number of cans of lemonade she ordered for 24 people

$\frac{3}{1}=\frac{x}{24}\\\\x=24(3)\\\\x=72\ cans$

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3 years ago