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4 years ago

What is 7.4 rounded to the nearest tenth?

Mathematics

2 answers:

stepan [7]4 years ago

8 0

7.4 rounded to the nearest tenth is 7

jolli1 [7]4 years ago

4 0

You can not round it to the nearest tenth because the decimal ends at the tenths place

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Xavier made 25 pounds of roasted almonds for a fair he has 3 and 1/2 pounds left at the end of the fair how many pounds of roast

Pepsi [2]

Answer:

Step-by-step explanation:

25-x=3 (1/2)

you just subtract 25 by 3 (1/2), and you get 21 (1/2).

Xavier sold 21 (1/2) pounds of roasted almonds

4 0

3 years ago

What is y=4x^2-9x+1 in vertex form

Anna11 [10]

Answer:

$y = 4 \left(x - \dfrac{9}{8} \right)^2 - \dfrac{65}{16}$

Step-by-step explanation:

$y = 4x^2 - 9x + 1$

You need to complete the square on the right side.

$y = (4x^2 - 9x) + 1$

$y = 4(x^2 - \dfrac{9}{4}x) + 1$

$y = 4 \left( x^2 - \dfrac{9}{4}x + \left( \dfrac{9}{8} \right)^2 \right) + 1 - 4\left( \dfrac{9}{8} \right)^2$

$y = 4 \left(x - \dfrac{9}{8} \right)^2 + 1 - 4 \left( \dfrac{81}{64} \right)$

$y = 4 \left(x - \dfrac{9}{8} \right)^2 + 1 - \dfrac{81}{16}$

$y = 4 \left(x - \dfrac{9}{8} \right)^2 + \dfrac{16}{16} - \dfrac{81}{16}$

$y = 4 \left(x - \dfrac{9}{8} \right)^2 - \dfrac{65}{16}$

3 0

3 years ago

A ball is thrown into the air with a initial velocity of 25 meters per second.The function h(t)+-4.9t^2+25t+6 represents the hei

Sati [7]

Answer:

[2.1, 3]

Step-by-step explanation:

Given the height of the ball modelled by the equation;

h(t) =-4.9t^2+25t+6

Required

Domain for 36.9m

To get that we are to find the value of the input variable which is the time t when h(t) = 36.9

Substitute

36.9 = -4.9t^2+25t+6

multiply through by -10

-369 = 49t²-250t-60

49t²-250t-60 + 369 = 0

49t²-250t+309 = 0

Find the domain of t

49t²-147t-103t+309 = 0

49t(t-3)-103(t-3) = 0

(49t-103)(t-3) = 0

49t - 103 = 0 and t-3 = 0

49t = 103 and t = 3

t = 103/49 and t = 3

t = 2.1 and t = 3

Hence the reasonable domain for 36.9m is [2.1, 3]

8 0

3 years ago

Please help me Answer the encircled numbers only

MrRissso [65]

I hope this helps you

3 0

3 years ago

Which expressions are equivalent to <br> 2r+(t+r)

stepan [7]

Answer:

2r+(t+r)

2r+t+1r

3r+t

8 0

3 years ago