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3 years ago

System of equations -8x + 4y = 24 -7x + 7y = 28 X= _ Y=_

Mathematics

2 answers:

lilavasa [31]3 years ago

8 0

Answer:

You would end up with X= -2, y= 2

And they would intersect at point (-2,2) on a graph :)

andreev551 [17]3 years ago

7 0

Answer:

x= -2

y= 2

Step-by-step explanation:

Khan ^w^

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How many triangles can be constructed with angles measuring 10º, 80º, and 90º?

Feliz [49]

The answer is A. more than one, because you can create one, but then you can move the angles around. So if the angles in order go 10°, 80°, 90°, you could change the order to 90°, 10°, 80°, or something. I hope this helps!

4 0

2 years ago

Read 2 more answers

Rachel has 30 pounds of a mixture of candy that sells for $1.00/lb. If lollipops sell for $0.95/lb and caramel candies sell for

Lina20 [59]

Answer:

Twenty Pounds

Step-by-step explanation:

Equation #1:

30lbs x Mix Price = (Lollipop Lbs x 0.95) + (Caramel Lbs X 1.10)

Equation #2:

Lollipops Lbs + Caramel Lbs = 30 Lbs

Rearrange expressions to solve for different variables

EQ1: Caramel Lbs = (30 - .95 Lollipop Lbs)/ 1.10 NOTE: (mix price = 1.00)

EQ2: Lollipop Lbs = 30 - Caramel Lbs

Substitute formula 1 into formula 2

Lollipop Lbs = 30 - [(30 - .95 Lollipop Lbs)/1.10]

Distribute divisor

Lollipop Lbs = 30 - 27.2727 + .8636 Lollipop Lbs

Collect terms

Lollipop Lbs = 2.7273 + .8636 Lollipop Lbs

Remove .8336 Lollipops from both sides of the equation

.1364 Lollipop Lbs = 2.7273

Divide both sides by .1364 (Answer is 19.9949 which rounds to 20)

Lollipop Lbs = 20

PROOF:

30 = (20 x 0.95) + (10 x 1.10)

30 = 19 + 11

30 = 30 TRUE!

6 0

2 years ago

Byron is a wealthy tycoon who makes his money buying and selling stocks. This is an example of _____ income. A. Capital gains b.

Gnom [1K]

Answer:

The answer would be A.

Hope this helped :D

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2 years ago

What is 10% of 50? A. 6.75 B. 7.5 C. 10.5 D. 5.25

nirvana33 [79]

Its 5. Its none of those.

10% of 50.00 = 5.0000

5 0

3 years ago

Para alavancar seus lucros, o dono de uma empresa passou a investir mais no meio digital, começando pelo seu site. Com base em u

ella [17]

Answer:

85.5 reals

Step-by-step explanation:

Aqui, usando a função de análise, queremos saber a quantidade de dinheiro que deve ser investido para fornecer o número de visualizações.

A maneira como podemos resolver isso é através da substituição. Precisamos apenas substituir F (x) na equação e resolver x, o que nos dará a idéia da quantidade de dinheiro a ser investido.

matematicamente

F (x) = 40x + 80

3500 = 40x + 80

40x = 3500-80 40x = 3420 x = 3420/40

x = 85,5 reais

8 0

3 years ago

System of equations -8x + 4y = 24 -7x + 7y = 28 X= ___ Y=___

System of equations -8x + 4y = 24 -7x + 7y = 28 X= _ Y=_