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2 years ago

Four-fifths the sum of twice a number and nine is equal to negative

Mathematics

1 answer:

wlad13 [49]2 years ago

8 0

Answer:

The number should be -22

Step-by-step explanation:

4/5(2x + 9) = -28

2x + 9 = - 35

2x = - 44

X = -22

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Nina can braid 144 inches of rope in 3 hours find her unit rate round your answer to the nearest thousand

Alex777 [14]

Answer:

48 inches

0.8 minutes

Step-by-step explanation:

To find the unit rate of inches per hour, divide 144 by 3.

144÷3=48

You don't need to round because there are no decimals.

To find the time to braid 1 inch, first multiply 3 by 60 (because there are 60 minutes in 1 hour).

3×60=180

Then divide 144 by 180.

144÷180= 0.8

You don't need to round because there are no thousandths.

7 0

2 years ago

(12,-9) and (-2,-2) in slope intercept form and if u want the points please explain how u got it

Montano1993 [528]

Answer:

$y= -\frac{1}{2} x-3$

Step-by-step explanation:

Slope intercept form :

y = mx + b

m is the slope

b is the y-intercept

Let's look for m, use the formula $\frac{(y_{1}-y_{2} ) }{(x_{1} -x_{2} )}$ to determine it.

$\frac{-9 - (-2)}{12 - (-2)}$ $= -\frac{1}{2}$

$y = -\frac{1}{2}x+b$

Now find b, we simply need to plug in one of our coordinates to get our answer.

(12, -9)

$-9=-\frac{1}{2} (12)+b$

Solve for b :

-9 = -6 + b

-3 = b

b = -3

Our slope intercept is :

$y = -\frac{1}{2}x - 3$

5 0

2 years ago

In an exponential function of the form f(x) = ab", a is the

marta [7]

Answer:

Step-by-step explanation:

pls give brainlest

5 0

2 years ago

g If every pair of people in a group are friends, or if every pair are strangers, the group is called uniform. Show the above re

Gennadij [26K]

Answer:

Every group of 6 people has at least two uniform 3-person groups.

Step-by-step explanation:

Denote the 6-people by 6-vertices and draw a blue edge between 2-edges. If the two persons representing the vertices are friends. Otherwise, draw a red edge. This gives rise to a colored graph K6, edges arecolored with either blue or red.

There can exist at most 36 mips. so, multicolor triangles can exist at most 36/2 = 18 multicolor triangles.

If there are 20-triangle in graph. Therefore, every graph of 6-people has at least two uniform 3-person groups.

8 0

3 years ago

What is 79 1/2% of $7570?

Mariulka [41]

Answer:

$6018.15

Step-by-step explanation:

"is" number always goes on TOP "of" number.

"is" number is 79 1/2%

"of" number is $7570

79 1/2 % / $7570 * 100 = $6018.15 

To find out if the answer is correct :

6018.15 / 7570 * 100 = 79.12%

5 0

2 years ago