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cricket20 [7]
3 years ago
11

on Saturday quentin will earn 15.00 more than 2 times the amount of money he earned on Friday. if quentin earned d dollars on Fr

iday, how much money did he earn on Saturday

Mathematics
1 answer:
Basile [38]3 years ago
6 0

$15 more, than twice Friday's earnings

d is how much he earned on Friday

s is how much he earned on Saturday

2d + 15 = s

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I have nooooo clue, please help
Aleksandr-060686 [28]

Answer:

case a) x^{2}=3y ----> open up

case b) x^{2}=-10y ----> open down

case c) y^{2}=-2x ----> open left

case d) y^{2}=6x ----> open right

Step-by-step explanation:

we know that

1) The general equation of a vertical parabola is equal to

y=a(x-h)^{2}+k

where

a is a coefficient

(h,k) is the vertex

If a>0 ----> the parabola open upward and the vertex is a minimum

If a<0 ----> the parabola open downward and the vertex is a maximum

2) The general equation of a horizontal parabola is equal to

x=a(y-k)^{2}+h

where

a is a coefficient

(h,k) is the vertex

If a>0 ----> the parabola open to the right

If a<0 ----> the parabola open to the left

Verify each case

case a) we have

x^{2}=3y

so

y=(1/3)x^{2}

a=(1/3)

so

a>0

therefore

The parabola open up

case b) we have

x^{2}=-10y

so

y=-(1/10)x^{2}

a=-(1/10)

a

therefore

The parabola open down

case c) we have

y^{2}=-2x

so

x=-(1/2)y^{2}

a=-(1/2)

a

therefore

The parabola open to the left

case d) we have

y^{2}=6x

so

x=(1/6)y^{2}

a=(1/6)

a>0

therefore

The parabola open to the right

3 0
2 years ago
Please answer it now in two minutes
oksano4ka [1.4K]

Answer:

3.9

Step-by-step explanation:

Pythagorean theorem:

a^2 + b^2 = c^2

a^2 + 1^2 = 4^2

a^2 + 1 = 16

a^2 = 15

a = sqrt(15)

a = 3.9

Answer a = 3.9 yards

3 0
2 years ago
Read 2 more answers
(a) How many tens are in 457? How many whole tens?
PolarNik [594]

Answer:

  • 45,7 tens
  • 45 whole tens

Step-by-step explanation:

457 / 10 = 45,7

5 0
2 years ago
Simplify the expression
love history [14]
The answer is C.) 27f-21
6 0
3 years ago
Read 2 more answers
Please zoom in before you start solving because there are tricks in here. What is the answer?
blondinia [14]
45 ÷ 3 = 15
21 ÷ 3 = 7
12 ÷ 3 = 4

(4 + 15) x 7 = 133

OR if you’re using bedmas/pedmas

4 + (15 x 7) = 109
7 0
3 years ago
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