All categories

3 years ago

Perform the indicated operation. 7 + 9 + (-4)

Mathematics

2 answers:

Marrrta [24]3 years ago

8 0

7 + 9 + (-4) = 16 + (-4)
= 12

e-lub [12.9K]3 years ago

6 0

=12 if we are talking in terms of basic operations.

You might be interested in

What is the second step to solving this equation?<br> 6.6x + 2 = 8.6<br> Please I need help

Varvara68 [4.7K]

Answer

Step 2: Divide both sides by 6.6.

6.6x/6.6 = 6.6/6.6

3 0

4 years ago

Can someone help me please !

elena55 [62]

The reference angle is
pi/3.

At 180 it would be 9pi/3 so going past that is 10pi/3.

7 0

3 years ago

F(x)=x^2. What is g(x)

ANTONII [103]

Answer: D

Step-by-step explanation:

I substituted in the value of x (2) to see if it gave me the value of y (1) because that’s the point it gave on g(x).

The only equation that worked was D.

1/2*2=1 then 1^2=1

3 0

4 years ago

Solar panels installed in a backyard have a cross section that is a right triangle. The diagram shows the approximate dimensions

Citrus2011 [14]

Answer:

About 4.2 ft

Explanation:

The area of the traingle can be calculated in two ways.

$A=\frac{1}{2}\text{width}\cdot\text{length}$

where width = 4.4 ft and length = 13.6 ft.

Putting in the values for width and length gives

$\begin{gathered} A=\frac{1}{2}13.6\cdot4.4_{} \\ \boxed{A=29.92ft^2} \end{gathered}$

The other way that the area can be calculated is

$A=\frac{1}{2}\cdot\text{height}\cdot\text{base}$

where height = vertical length and base = 14.3 ft; therefore.

$\begin{gathered} A=\frac{1}{2}14.3h \\ A=7.15h \end{gathered}$

This must equal the area of the triangle we found above; therefore,

$A=29.92=7.15h$ $29.92=7.15h$

dividing both sides by 7.15 gives

$h=\frac{29.92}{7.15}$ $\boxed{h\approx4.2ft}$

which is our answer!

7 0

1 year ago

What is 64% of 875??

Evgen [1.6K]

I think the answer is $560

working:
$875 * 64% = $560

8 0

3 years ago

Read 2 more answers