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sweet-ann [11.9K]

3 years ago

15

Evaluate the expression 10x^-2y^-1 if x= -2, y = 1

1 answer:

Talja [164]3 years ago

6 0

10x^-2y^-1.

Plug -2 in for x and 1 in for y.

10(-2)^-2(1)^-1 = 0.25 or 1/4

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Lisa is cooking muffins. The recipe calls for 7 cups of sugar. She has already put in 2 cups. How many more cups does she need

Tresset [83]

the answer is 5. 7-2 is 5.

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3 years ago

Which expression is equivalent to -2v+(-4)+8+(-3v)?

UNO [17]

Answer:

5v+4

Step-by-step explanation:

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3 years ago

Let f(x)=x^2+6x−16.<br> Enter the x-intercepts of the quadratic function in the boxes.

Sauron [17]

$\underline{\underline{\large\bf{Given:-}}}$

$\red{\leadsto}\:$ $\textsf{}$ $\sf f(x)= x^2+6x−16$

$\underline{\underline{\large\bf{To Find:-}}}$

$\orange{\leadsto}\:$ $\textsf{ x-intercepts of the quadratic function }$ $\sf$

$\\$

$\underline{\underline{\large\bf{Solution:-}}}\\$

$\longrightarrow$ x- intercept is the point where graph of given function touches the x-axis,f(x) becomes 0 at the point where graph of given function touches the x-axis. Therefore, we would to solve x^2+6x−16=0 and find its root.

$\begin{gathered}\\\implies\quad \sf x^2+6x−16=0 \\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf x^2+8x-2x −16=0 \\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf x(x+8)-2(x+8)=0 \\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf (x-2)(x+8)=0\\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf x=2\quad or \quad x=-8 \\\end{gathered}$

$\leadsto$ x-intercepts of the given quadratic function are 2 and -8 .

7 0

3 years ago

Please help i’ll give brainliest if you give me a correct answer and show your work thanks !

Readme [11.4K]

Answer:

1. 56.7

2. 0.088

Step-by-step explanation:

1.35x4.2=56.7

0.4x0.22=0.088

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3 years ago

7+15×nine to the 2power

xxMikexx [17]

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3 years ago