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4 years ago

PLS HELP ME IM BEING TIMED AND I HAVE 20 MINS TO TURN IN.

Mathematics

1 answer:

Natasha_Volkova [10]4 years ago

8 0

Answer:

2.a) 3 ( x - 1 ) = 5x - 6 (Because the sides of a square are always equal)

b) 3 ( x - 1 ) = 5x - 6

=> 3x - 3 = 5x - 6

=> 3x - 5x = -6 + 3 (Law of transposition)

=> -2x = -3

=> -x = -3/2

=> -x = -1.5

=> x = 1.5 (By cancelling out the negative sign from both the sides)

c) 3(x-1) = 3 (1.5 - 1)

=> 3 (0.5)

=> 3 * 0.5 = 1.5

Both the angles are 1.5 because they are equal

If my answer helped, please mark me as the brainliest!!

Thank You!

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Ella has 0.5 lbs of sugar. How much water should she add to make the following concentrations? Tell Ella how much syrup she will

HACTEHA [7]

Ella has to add 32.833 lbs of water to get 33.333 lbs of syrup.

<u>Solution:</u>

Ella has 0.5 lbs of sugar. Let x lbs be the amount of water Ella should add to get the 1.5% of syrup,

$\Rightarrow0.5\text{ lbs }- 1.5\%$

$\Rightarrow x+0.5\text{ lbs }- 100\%$

On writing the proportion,

$\Rightarrow\dfrac{0.5}{x+0.5}=\dfrac{1.5}{100}\\ \\\Rightarrow0.5\cdot 100=(x+0.5)\cdot 1.5\\ \\\Rightarrow50=1.5x+0.75\\ \\\Rightarrow1.5x=50-0.75\\ \\\Rightarrow1.5x=49.25\\ \\\Rightarrow x=\dfrac{49.25}{1.5}\approx 32.833\ lbs$

To get 1.5% syrup Ella should add 32.833 lbs of water. The total weight of syrup is 33.333 lbs.

7 0

3 years ago

Shanley would like to give $5 gift cards

Serjik [45]

Answer:

$5x + $4y ≤ $120

let x = 10

y = 5

$70 ≤ 120

Step-by-step explanation:

Note that

> means greater than

< means less than

≥ means greater or equal to

≤ means less than or equal to

the total amount Shanley has is $120. She can spend less than this amount or the amount exactly. So, the inequality sign to be used is ≤

$5x + $4y ≤ $120

let x = 10

y = 5

(50) + 20 ≤ 120

$70 ≤ 120

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3 years ago

What is the sum of 1/4+1/10

IgorLugansk [536]

Answer:

simplify: 14/40

not simplify: 7/20

I don't know if it's right but i'm trying to help :)

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3 years ago

Answer this by 4:20 EST and I will mark brainliest

Alexxandr [17]

Answer:

Step-by-step explanation:

Calculate the slope m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = (6, a ) and (x₂, y₂ ) = (9, - 4 )

m = $\frac{-4-a}{9-6}$ = $\frac{-4-a}{3}$

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

2x - 3y = 6 ( subtract 2x from both sides )

- 3y = - 2x + 6 ( divide through by - 3 )

y = $\frac{2}{3}$ x - 2 ← in slope- intercept form

with slope m = $\frac{2}{3}$

Parallel lines have equal slopes , then

$\frac{-4-a}{3}$ = $\frac{2}{3}$ , so

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Answer:

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Step-by-step explanation:

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