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2 years ago

Which model could represent the solution to 2/3 - 1/2?

Mathematics

1 answer:

bearhunter [10]2 years ago

8 0

Answer:

The last one on the bottom should be your answer

I hope this helps you honey

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Eastside middle school has 1,500 students. Thirty-two percent of them are in sixth grade. How many sixth-grade students are the

hichkok12 [17]

480 six graders
1,500*0.32 = 480

6 0

2 years ago

Diego is solving the equation x^2-12x = 21

uysha [10]

Answer:

The solutions to the quadratic equations will be:

$x=\sqrt{57}+6,\:x=-\sqrt{57}+6$

Step-by-step explanation:

Given the expression

$x^2-12x\:=\:21$

Let us solve the equation by completing the square

$x^2-12x\:=\:21$

Add (-6)² to both sides

$x^2-12x+\left(-6\right)^2=21+\left(-6\right)^2$

simplify

$x^2-12x+\left(-6\right)^2=57$

Apply perfect square formula: (a-b)² = a²-2ab+b²

i.e.

$x^2-12x+\left(-6\right)^2=\left(x-6\right)^2$

so the expression becomes

$\left(x-6\right)^2=57$

$\mathrm{For\:}f^2\left(x\right)=a\mathrm{\:the\:solutions\:are\:}f\left(x\right)=\sqrt{a},\:-\sqrt{a}$

solve

$x-6=\sqrt{57}$

add 6 to both sides

$x-6+6=\sqrt{57}+6$

Simplify

$x=\sqrt{57}+6$

also solving

$x-6=-\sqrt{57}$

add 6 to both sides

$x-6+6=-\sqrt{57}+6$

Simplify

$x=-\sqrt{57}+6$

Therefore, the solutions to the quadratic equation will be:

$x=\sqrt{57}+6,\:x=-\sqrt{57}+6$

5 0

2 years ago

Solve for all possible values of x.<br> √60 8x = x - 9

umka2103 [35]

The possible values of x are 3 and 7

<h3>Solving rational expressions</h3>

Given the rational expression below;

√60-8x = x - 9

Square both sides to have:

(60-8x)² = (x-9)²

60-8x = x²-18x+81

Equate to zero to have;

x²-18x+81 - 60 + 8x = 0

x² - 10x + 21 = 0

x² -3x-7x +21 = 0

x(x-3)-7(x-3) = 0

x = 3 and 7

Hence the possible values of x are 3 and 7

Learn more on rational expression here: brainly.com/question/25292194

#SPJ1

4 0

1 year ago

−7m^5 + 3m^3 + 5m^2<br> plz show work

nata0808 [166]

Answer:See below

Step-by-step explanation:See below

7 0

3 years ago

Luis has $70. He wants to buy a new pair of shoes that costs $90. He asks his mother to borrow him some money. How much will he

IRINA_888 [86]

Answer:

$90-$70=$20

Step-by-step explanation: U take 90 from 20

7 0

2 years ago