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Zigmanuir [339]
3 years ago
11

Calculate using order of operations. 7.8+6.2×(4-1.5)×4​ full formula​

Mathematics
1 answer:
Setler79 [48]3 years ago
8 0

Answer:

69.8

Step-by-step explanation:

order of operations can be abbreviated as GEMDAS 1. <u>G</u>roups 2. <u>E</u>xponents 3. <u>M</u>ultiplication and <u>D</u>ivision 4. <u>A</u>ddition and <u>S</u>ubtraction

So start by writing out the equation

7.8+6.2*(4-1.5)*4

Slove anything grouped with parenthesis or other grouping symbols

7.8+6.2*(2.5)*4

There are no exponents so skip to Multiplying and Dividing

7.8+15.5*4

7.8+62

Then Addition and Subtraction

69.8

(also I already know that most people write it as PEMDAS as in parenthesis instead of groupings but I personally prefer to abbreviate it as GEMDAS and that is an opinion for a reason)

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Create the equation of a line that perpendicular to 2y=14+2/3x and passes through the point (-2,8).
riadik2000 [5.3K]

Answer:

y = - 3x + 2

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Rearrange 2y = 14 + \frac{2}{3} x into this form

Divide all terms by 2

y = 7 + \frac{1}{3} x ← in slope- intercept form

with slope m = \frac{1}{3}

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{\frac{1}{3} } = - 3, hence

y = - 3x + c ← is the partial equation of the perpendicular line

To find c substitute (- 2, 8) into the partial equation

8 = 6 + c ⇒ c = 8 - 6 = 2

y = - 3x + 2 ← equation of perpendicular line

4 0
3 years ago
im not sure on how to do this If one angle of a triangle is 30° more than twice another angle, and the third angle is equal to t
deff fn [24]

Answer:

Step-by-step explanation: How do you find the 3rd angle of a triangle?

Image result for im not sure on how to do this If one angle of a triangle is 30° more than twice another angle, and the third angle is equal to the sum of the first two angles, find the measure of each angle.

The three angles of any triangle add up to 180 degrees. Since you know two angles (35 and 40), add them together, then subtract the total from 180 to determine the degree of the third angle.

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Answer:

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3 years ago
Maria can clean the entire house in two hours. Her sister, Sasha, can clean the house in three hours. How long would it take for
lisabon 2012 [21]
Maria do 1/2 work in 1 hour
Sasha do 1/3 work in 1 hour

Thus,
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3 years ago
Jane was asked to find the factors of 8. Here is her work: 8 × 1 = 8 8 × 2 = 16 8 × 3 = 24 Factors of 8: 8, 16, 24 Which stateme
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Answer:

Jane found multiples of 8.

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Step-by-step explanation:

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3 years ago
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