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GREYUIT [131]
3 years ago
9

Help! Due soon!!!!!!!!!

Mathematics
2 answers:
denis23 [38]3 years ago
8 0

Answer:

78.75

Step-by-step explanation:

450 is increased by 75%

450 + 450*75%

Change to decimal form

450 +450*.75

450+337.5

787.5

Now decrease by 90%

787.5-787.5*90%

Change to decimal form

787.5-787.5*.9

787.5-708.75

78.75

juin [17]3 years ago
5 0

Answer:

78.75

Step-by-step explanation:

450 + (450 x .75) = 787.5

787.5 - (787.5 x .90) = 78.75

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Help on this please
eimsori [14]

Answer:

Opening: Opens upwards

Axis of Symmetry: -7/2

Vertex: (-7/2, -81/4)

X - intercepts: (1, 0) and (-8, 0)

Y - intercept: (0, -8)

Step-by-step explanation:

Opening: 'a' is greater than zero

Axis of Symmetry:

\frac{-7}{2(1)} =\frac{-7}{2}

Vertex:

y= (\frac{-7}{2})^{2} +7(\frac{-7}{2}) -8\\y= (\frac{49}{4}) +(\frac{-49}{2}) -8\\y= \frac{49}{4} +\frac{-98}{4} -8\\y=\frac{-49}{4}-8\\y = \frac{-81}{4}

X - intercepts:

(x-1)(x+8)

x = 1 and x = -8

Y - intercept: (0, -8)

y= 0^{2} +7(0) -8\\\\y= -8\\

5 0
3 years ago
Leanna is making a craft and needs 12 yards of ribbon. If 2 yards of ribbon cost $1.25, how much will 12 yards cost?
tankabanditka [31]

Answer:

$7.50

Step-by-step explanation:

2 yd= 1.25

we have 12 yd so 12/2= 6

6*1.25= 7.50

8 0
3 years ago
Drag point P around the unit circle to find the values of the trigonometric functions.
DanielleElmas [232]

Answer:

See the attachment

Step-by-step explanation:

A unit circle is one whose radius is 1

sin(90) will have coordinates (0,1)

sin(40)= 0.643

sin(40)= P/H= 0.643/1

cos(40)= B/H= 0.766

Similarly for cos(245)= cos(-65)= -0.423/1

                      sin(245)= sin(-65)= -0.906

8 0
4 years ago
Read 2 more answers
The square below represents one whole.
zaharov [31]

Answer:

6 percent

Step-by-step explanation:

6/100 is shaded. This is the same thing as 0.06. Once I move the decimal two places to the right, I get 6. (I move the decimal place because percents are out of 100, so two decimal places.) This means 6 percent.

4 0
3 years ago
15 boys can cut the grass on the football field in 12days. how many days will it take 9 boys​
Inessa [10]
X=15-12
X=3(number of days in difference to the number of people)
X=9-3
X=6 it would take 6 days to cut the grass with 9 boys
5 0
3 years ago
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