3 years ago

X+y=3 & 8x+y=4 elimination need help

Mathematics

1 answer:

aivan3 [116]3 years ago

7 0

Hopefully you can read cursive writing (: hope this helps!

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10 points. y = a(x-h)^2 + k

Advocard [28]

Answer:

Option A $\textbf{a}=\frac{\textbf{y-k}}{(\textbf{x-h})^2}$

Step-by-step explanation:

Verification: The given equation is

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

$y-k=a(x-h)^2$

$\frac{y-k}{(x-h)^2}=a$

which may be written as

$a=\frac{y-k}{(x-h)^2}$

4 0

3 years ago

A store sells 3 T-shirts for $27.42. What is the unit cost per T-shirt?

natima [27]

Answer:

$9.14

Step-by-step explanation:

27.42 divided by 3 = $9.14 per shirt

4 0

4 years ago

Read 2 more answers

F(x)=X+2<br>g(x) = - 3x + 10<br>

Fittoniya [83]

3 * 10 is 30 because 10 you would just add a zero behind the three

6 0

4 years ago

Brigid has a 25-foot ladder she will use to paint the side of her house. What angle does the ladder need to make with house so s

lana66690 [7]

Answer:

The answer to your question is the letter D) 46°

Step-by-step explanation:

Data

length = 25 ft

Opposite side = 18 ft

Angle = Ф

To solve this problem, use trigonometric functions. The trigonometric function that relates the Opposite side and the hypotenuse is sine.

Sin Ф = Opposite side / hypotenuse

-Substitution

sin Ф = 18/25

-Simplification

sin Ф = 0.72

-Result

sin⁻¹ Ф = 0.72 = 46°

7 0

3 years ago

The mean of this data is 8 what two numbers could go in the blanks <br><br> 12,4,9,13,7,11,5,2,-,-

Sophie [7]

12+4+9+13+7+11+5+2+_+_ /10= 8
x10 both sides

12+4+9+13+7+11+5+2+_+_=80
63+_+_=80
-63 both sides
_+_= 17
any two numbers that add up to 17 can go in the planks
7,10

4 0

4 years ago