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4 years ago

When a=-9, and b=-6, which expression has a value of -3?

Mathematics

1 answer:

WINSTONCH [101]4 years ago

6 0

The answer is B. a-b
Hope this helps

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Find the value of expression m(m-n) for m=3 and n=1 I need the ANSWER ASAP

Alex73 [517]

Answer:

Step-by-step explanation:

m = 3

n = 1

Equation

m(m - n) Substitute the givens

Solution

3(3 -1 ) Evaluate what is inside the brackets.

3(2) multiply

7 0

4 years ago

Which statement about Earth's rotation and its revolution is correct?

Vladimir79 [104]

Answer:

It takes Earth longer revolve around the Sun than to rotate on its axis.

explanation:

Rotation is spinning of the Earth around its own axis

The Earth takes 24 hours to complete a rotation.

Revolution is movement of the Earth around the Sun.

The Earth takes a full year or 365 days for one complete revolution around the Sun

Hence Earth takes longer to revolve around the sun than to rotate on its axis.

Moon takes the same time to revolve around the Earth and rotate around itself.

5 0

3 years ago

The parallelogram shown below has an area of 120 units Find the missing base. b= units

Maksim231197 [3]

Answer:

Step-by-step explanation:

a=b*h

12*b=120

b=10

feel free to ask if you have any questions

5 0

3 years ago

Which of the following graphs represents the equation below? f(x) = x^2 + 4x

Sindrei [870]

Answer:

The graph in the attached figure

Step-by-step explanation:

we have

$f(x)=x^{2}+4x$

This is a vertical parabola open upward

The vertex is a minimum

step 1

Find the x-intercepts

The x-intercepts are the values of x when the value of the function is equal to zero

For f(x)=0

$0=x^{2}+4x$

Factor x

$0=x(x+4)$

The x-intercepts are (0,0) and (-4,0)

step 2

Find the y-intercept

The y-intercept is the values of the function when the value of x is equal to zero

For x=0

$f(x)=(0)^{2}+4(0)=0$

The y-intercept is (0,0)

step 3

Find the vertex

Convert the equation into vertex form

$f(x)=x^{2}+4x$

Complete the square

$f(x)=(x^{2}+4x+4)-4$

Rewrite as perfect squares

$f(x)=(x+2)^{2}-4$

The vertex is the point (-2,-4)

therefore

using a graphing a graphing tool

The graph in the attached figure

7 0

3 years ago

Convert the following into degree measure: 7pi/12

Alex787 [66]

Since we know that there are 180° in π radians, then, how many degrees are there in 7π/12 radians?

$\bf \begin{array}{ccll}
de grees&radians\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
180&\pi \\\\
d&\frac{7\pi }{12}
\end{array}\implies \cfrac{180}{d}=\cfrac{\quad \pi \quad }{\frac{7\pi }{12}}\implies \cfrac{180}{d}=\cfrac{\quad \frac{\pi}{1} \quad }{\frac{7\pi }{12}}
\\\\\\
\cfrac{180}{d}=\cfrac{\underline{\pi} }{1}\cdot \cfrac{12}{7\underline{\pi} }\implies \cfrac{180}{d}=\cfrac{12}{7}\implies \cfrac{180\cdot 7}{12}=d\implies 105=d$

4 0

3 years ago