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3 years ago

9

To be able to do the problem 5(10 + 4) mentally, Zack does 50 + 20 instead of 5(14).

1 answer:

Maurinko [17]3 years ago

7 0

He used distributive property

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If y+(x^2+x+1)(x^3-x-1), then y’(2)=

umka2103 [35]

Easy it’s y=learn it your self and pay attention you bum

3 0

3 years ago

Write 77^1/10 in the form <br> n√77 where n is a whole number.

Sedaia [141]

Answer:

$\sqrt[10]{77}$

Step-by-step explanation:

$77^\frac{1}{10}$ is the same as $\sqrt[10]{77^1} ,$ or simply $\sqrt[10]{77}$

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2 years ago

Solving Quadratic Equations using the Square Root Property

Afina-wow [57]

Answer:

$x = -2$ or $x = -5$

Step-by-step explanation:

You need to complete the square before you can take the square root of both sides.

$x^2 + 7x + 10 = 0$

Subtract 10 from both sides.

$x^2 + 7x = -10$

To complete the square, you need to add the square of half of the x-term coefficient to both sides.

The x-term coefficient is 7. Half of that is 7/2. Square it to get 49/4. Now we add 49/4 to both sides of the equation.

$x^2 + 7x + \dfrac{49}{4} = -10 + \dfrac{49}{4}$

$(x + \dfrac{7}{2})^2 = -\dfrac{40}{4} + \dfrac{49}{4}$

$(x + \dfrac{7}{2})^2 = \dfrac{9}{4}$

Now we use the square root property, if

$x^2 = k$ , then

$x = \pm \sqrt{k}$

$x + \dfrac{7}{2} = \pm \sqrt{\dfrac{9}{4}}$

$x + \dfrac{7}{2} = \pm \dfrac{3}{2}$

$x + \dfrac{7}{2} = \dfrac{3}{2}$ or $x + \dfrac{7}{2} = -\dfrac{3}{2}$

$x = -\dfrac{4}{2}$ or $x = -\dfrac{10}{2}$

$x = -2$ or $x = -5$

5 0

3 years ago

determine the volume of a rectangular container van with length,width, and height of 52m,13 m and 20m respectively.

icang [17]

$\huge \boxed{ \green{ANSWER}}$

$\underline{v = 13 \: 520 \: {m}^{3} }$

$\huge \boxed{ \red{SOLUTION}}$

$v = lwh \\ = (52m) \: (13m) \: (20m) \\ \implies \underline{v = \: 13 \: 520 \: {m}^{3} }$

<h3>#CarryOnLearning</h3>

$\mathfrak{WatanabeHaruto}$

6 0

2 years ago

The circle graph shows how a family budgets its annual income. If the total annual income is $140,000, what amount is budgeted f

lorasvet [3.4K]

Answer:

i'm not sure but if you get a calculator and add the percentages up you will probably get the answer

Step-by-step explanation:

get calculator, use calculator

3 0

3 years ago

Read 2 more answers