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3 years ago

Question 7(Multiple Choice Worth 3 points)

Mathematics

1 answer:

Taya2010 [7]3 years ago

3 0

Answer: y = one twelfth(x + 2)2

Step-by-step explanation:

just did the test

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Which parabola will have a minimum value vertex?

hichkok12 [17]

Answer:

The last choice.

Step-by-step explanation:

That would be the last one, with a minimum value of -4.

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3 years ago

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If REX ~ ROB, find the value of a.

Luba_88 [7]

Answer: 8

Step-by-step explanation:

As corresponding sides of similar triangles are proportional,

$\frac{RX}{RB}=\frac{XE}{BO}\\\\\frac{6}{15}=\frac{a}{20}\\\\a=20\left(\frac{6}{15} \right)=\boxed{8}$

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2 years ago

Evaluate the given expression at x= -4<br> -3x + 2x^2 + 2

Mkey [24]

Answer:

$\huge{ \boxed{ \bold{ \text{46}}}}$

Step-by-step explanation:

If the value of variables of algebraic expression are given, the value of the term or expression can easily obtained by replacing the variables with numbers.

$\text{ \underline{ Given}} : \text{x = - 4}$

$\text{ \underline{ To \: find}} : \sf{value \: of \: - 3x + 2 {x}^{2} + 2}$

$\text{ Plug \: the \: value \: of \: x}$

$➝ \: \sf{ - 3 * (- 4 )+ 2 * {( - 4)}^{2} + 2}$

$\text{Remember!} : \text{Multiplying \: a \: negative \: integer \: by \: negative \: integer \: gives \: a \: positive \: integer.}$

➝ $\sf{12 + 2 * {( - 4)}^{2} + 2}$

$\text{Evaluate \: the \: power}$

➝ $\text{12 + 2 * 16 + 2}$

$\text{Multiply \: the \: numbers}$

➝ $\text{12 + 32 + 2}$

$\text{Add \: the \: numbers}$

$➝ \boxed { \text{46}}$

$\text{Hope \: I \: helped!}$

$\text{Best \: regards!}$

~ $\text{TheAnimeGirl}$

7 0

3 years ago

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Is this the correct answer, yall?

ehidna [41]

Yes, yes it is; well done.

4 0

3 years ago

Ronch [10]

Answer: Question #1 The height of the tree is about 18 feet.

To solve this problem, you have to write a proportion using the similar triangles that are drawn. The height of the tree matches the height of the person and the shadows match.

Therefore, we can write and solve the following equation:

x/15 = 5.5/4.5
82.5 = 4.5x
x = 18.33

4 0

3 years ago