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3 years ago

10

Plzzzzz help me with my math

2 answers:

tia_tia [17]3 years ago

8 0

22\7 x Diameter=88 ft
D=88 x 7\22
D=28

bixtya [17]3 years ago

7 0

The denominator is about 3 ft. because, 7 goes into 22 3 times with the remainor of 1. (7 x 3 = 21)

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+<br> 3. -5y- 10=-60<br> А solve the equation

Phoenix [80]

Y=10
Add 10 to both sides
-5y=-50
Then divide both sides by -5
y=10

3 0

2 years ago

Will mark Brainlyist, Hurry is timed, thank you for all those who help!!!

Ymorist [56]

Answer:

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2 years ago

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Rewrite the quadratic function in vertex form.<br> Y=2x^2+4x-1

Fantom [35]

Answer:

$\large\boxed{y=2(x+1)^2-3}$

Step-by-step explanation:

The vertex form of an equation of a parabola:

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

(h, k) - vertex

We have

$y=2x^2+4x-1=2\left(x^2+2x-\dfrac{1}{2}\right)$

We must use the formula: $(a+b)^2=a^2+2ab+b^2\qquad(*)$

$2\left(x^2+2(x)(1)-\dfrac{1}{2}\right)=2\bigg(\underbrace{x^2+2(x)(1)+1^2}_{(*)}-1^2-\dfrac{1}{2}\bigg)\\\\=2\left((x+1)^2-1-\dfrac{1}{2}\right)=2\left((x+1)^2-\dfrac{3}{2}\right)$

Use the distributive formula a(b + c) = ab + ac

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2 years ago

Most staircases in use today have 9−inch treads and 8 12 −inch risers. What is the slope of a staircase with these measurements?

Sati [7]

Answer:

The value is $m = 0.9022$

Step-by-step explanation:

From the question we are told that

The length of the treads is $a = 9 \ inch$

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Generally the slope of the staircase is

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2 years ago

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larisa [96]

$(5x - 2)^2 = 15$

Square root both sides:
$5x - 2 = \pm\sqrt{15}$

Add 2 to both sides:
$5x = pm\sqrt{15} + 2$

Divide both sides by 5:
$x = \dfrac{ \pm\sqrt{15} + 2}{5}$

Answers:
$x = \dfrac{ \sqrt{15} + 2}{5} \ or \ \dfrac{ - \sqrt{15} + 2}{5}$

Answer: (B) and (E)

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2 years ago

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