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sveta [45]
3 years ago
14

How are parentheses used when grouping factors?

Mathematics
1 answer:
Semmy [17]3 years ago
3 0
Najs snjd djdnd fjf rnne. Rn. Fjjrkne nsnsns shen end dnd dhs sh shs dhd.
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The perimeter of a rectangle is 59
Lelu [443]
Perimeter = 2(length + width)
59 = 2(14+x)
59 = 28 + 2x
31 = 2x
15.5 = x

Width = 15.5
5 0
3 years ago
Write the quadratic function in the form f (x) = a (x - h)? +k
seraphim [82]

Answer:

f(x) = -3(x - 5)^2 + 4

vertex (5,4)

Step-by-step explanation:

f(x) = -3x² +30x - 71

f(x) = -3(x² +-10x) - 71

f(x) = -3(x² +-10x+5^2-5^2) - 71

f(x) = -3(x² +-10x+5^2) -3(-5^2) - 71

f(x) = -3(x² +-10x+5^2) + 4

f(x) = -3(x - 5)^2 + 4

vertex (5,4)

5 0
3 years ago
Rounded to the nearest thousandth, what is the decimal equivalent of 6 7/9%?
lakkis [162]

The question is asking us to find the decimal equivalent of 6\frac{7}{9}.%

Percent means out of 100.

6\frac{7}{9}=\frac{61}{9}.=6.77777.

6.777%= 6.777÷100

=0.068.(Rounded to nearest thousandths)

Option B is the right answer.

6 0
3 years ago
Read 2 more answers
If line ON is congruent to line OL find the measure of angle OML
snow_lady [41]
Angle n and angle l have the same degree so set them equal to eachother
7x+8=9x-8
-7x both sides
8=2x-8
+8 both sides
16=2x
÷2 both sides
x=8
solve for angle l
9 (8)-8
72-8=64°
solve for angle OML
90+64+OML=180
154+OML=180
-154 BOTH SIDES
OML=26°
4 0
3 years ago
A lawn can be mowed by 8 people in 6 hours. If 3 people take the day off and do not help mow the grass, how many hours will it t
JulijaS [17]

If 3 people take the day off, they will need (9 + 3/5) hours to mow the lawn. The correct option is B.

<h3>How many hours will it take to mow the lawn?</h3>

Let's say that each person works at a rate R.

8 people can mow the lawn in 6 hours, then we can write:

(8*R)*6 hours = 1 lawn.

Solving for R:

R = (1/48 lawns per hour).

If 3 people take the day off, then the lawn is mowed by 5 people in a time T, then we need to solve:

(5*R)*T = 1 lawn.

Replacing the value of R:

(5/48 lawns per hour)*T = 1 lawn.

Then we have:

T = (48/5) hours.

We can rewrite that as:

T = (45/5 + 3/5) hours

T = 9 + 3/5 hours.

Then we conclude that the correct option is B.

If you want to learn more about rates:

brainly.com/question/8728504

#SPJ1

3 0
2 years ago
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