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4 years ago

Evaluate. 6[5(3-9)-1]+2/7(8-2)+4

2 answers:

7 0

Just remember to do PEMDAS (Please excuse my dear aunt sally)
Which means the order you solve the equation is by first doing Parenthesis, then Exponents, Multiplication,Division,Addition, then subtraction.

But the answer is - 1262/7 (btw a negative 126/7)

GREYUIT [131]4 years ago

6 0

If you would like to evaluate 6 * [5 * (3 - 9) - 1] + 2 / 7 * (8 - 2) + 4, you can calculate this using the following steps:

6 * [5 * (3 - 9) - 1] + 2 / 7 * (8 - 2) + 4 = 6 * [5 * (-6) - 1] + 2/7 * 6 + 4 = 6 * [- 30 - 1] + 12/7 + 4 = 6 * [- 31] + 12/7 + 4 = - 186 + 12/7 + 4 = - 182 + 12/7 = - 1274/7 + 12/7 = - 1262/7

The correct result would be - 1262/7.

You might be interested in

(theta) = 168°; t = 0.28 sec; r = 3 mm. find its linear velocity.

Leokris [45]

Answer:

0.03 m/sec

Step-by-step explanation:

<h3>Given</h3>

Θ= 168°
t = 0.28 sec
r = 3 mm

Linear velocity

<h3>Solution</h3>

<em>Formula for linear velocity</em>

v = Θr/t

<u>Converting the angle measure from degrees to radians</u>

168° = 168*π/180 = 168*3.14/180 = 2.93

<u>Substituting values</u>

v = 2.93*3/0.28 mm/sec =
31.39 mm/sec =
0.03 m/sec rounded to nearest hundredths

6 0

4 years ago

Please help me understand how to do this with an easy explanation

ASHA 777 [7]

Answer:

10 and 10

Step-by-step explanation:

So for the first one, 1-(-9), the two subtraction signs cancel each other out and are turned into an addition symbol. The new equation would now be the absolute value of 1 + 9. As we know, 1 + 9 is 10, and the absolute value of 10 is 10. <u>The absolute value just means how many spaces the number is away from 0, and it will always be positive.</u>

<u></u>

For the second one, -9 -1 would equal -10. Even though -10 is negative, the absolute value will always be positive, so<u> the absolute value of the second one is also 10.</u>

<u></u>

Hope this helps and let me know about any questions!

7 0

3 years ago

Read 2 more answers

I built a storage shed in the shape of a rectangular box on a square base. The material that I used for the base cost $4 per squ

Dmitrij [34]

Answer:

$V = \frac{450L - 6 L^{3} }{10}$

Step-by-step explanation:

The volume of a cuboid can be determined simply by the formula: V= LWH

(where: L is length, H is height and W is width).

In this particular case the base is a square, which means the length and width are equal. Hence we can modify the equation of volume:

$V = L^{2} H$

Now we need to find the value of H in terms of L. For this we can develop the equation for cost incurred in building the storage shed. We find the area of each side of the cuboid, and then we multiply it by cost per square feet to find the total cost incurred; as shown below:

Base: $L$ × $L = L^{2}$

Roof: $L$ × $L = L^{2}$

Side: $4 H$ × $L = 4HL$ (we have considered all four sides)

Base: 4 $L^{2}$

Roof: 2 $L^{2}$

Side: $2.50 * 4HL = 10 HL$

Total cost:

4 $L^{2}$ + 2 $L^{2}$ + 10 $HL$ = 450

We simplify this equation further:

6 $L^2$ + 10<em>HL </em>= 450

10HL = 450 - 6 $L^2$

$H = \frac{450- 6 L^2}{10L}$

We now have the value of H, which we can substitute in the formula of Volume we deduced earlier:

substituting $H = \frac{450-6L}{10L}$ in $V = L^{2} H$ :

$V = L^2$ × $\frac{450 - 6L }{10L}$

Simplifying it further:

$V = L$ × $\frac{450 - 6L}{10}$

$V= \frac{450L - 6L^3}{10}$ is the final answer.

3 0

3 years ago

Find the area between y = 8 sin ( x ) y=8sin⁡(x) and y = 8 cos ( x ) y=8cos⁡(x) over the interval [ 0 , π ] . [0,π]. (Use decima

Marina86 [1]

Answer:

0.416 au

Step-by-step explanation:

Let y1=8sin(x) and y2=8cos(x), we must find the area between y1 and y2

$\int\limits^\pi _0{(8cos(x)-8sin(x))} \, dx = 8\int\limits^\pi _0{(cos(x)-sin(x))} \, dx =\\8(sin(x)+cos(x)) evaluated(0-\pi )=\\8(sin(\pi )-sin(0))+8(cos(\pi )-cos(0))=\\8(0.054-0)+8(0.998-1)=8(0.054)+8(-0.002)=0.432-0.016=0.416$

3 0

3 years ago

Last answer choice is 4,2<br><br> Help

Troyanec [42]

Use the midpoint formula:

(-7,-4) (-1,8)

(-7 + -1) /2 , (-4 +8) /2

-8/2 , 4/2

Midpoint = (-4,2)

7 0

4 years ago