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3 years ago

Please help i dont want to fail..

Mathematics

2 answers:

Margarita [4]3 years ago

7 0

Answer: the answer is d pls give brainlEst

Step-by-step explanation:im sorry i guess my math was wronge

navik [9.2K]3 years ago

5 0

Answer: b. 78 grams

Step-by-step explanation:

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A?<br> B?<br> C?<br> D?<br> Making sure I got it right

tatyana61 [14]

I believe that the answer would be B

3 0

3 years ago

kakasveta [241]

Answer:

Step-by-step explanation:

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3 years ago

A model rocket is launched directly upward at a speed of 28 meters per second from a height of 12 meters. The function f(t) = -

Jet001 [13]

Answer:

6.11 seconds

Step-by-step explanation:

Given

$f(t) = -4.9t^2 + 28t + 12$

Required

When will it hit the ground?

When it hits the ground, f(t) = 0.

So, we have:

$0 = -4.9t^2 + 28t + 12$

Solve quadratic equation using formula

$t = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

$t = \frac{-28 \± \sqrt{28^2 - 4*-4.9*12}}{2*-4.9}$

$t = \frac{-28 \± \sqrt{1019.2}}{-9.8}$

$t = \frac{-28 \± 31.92}{-9.8}$

Split

$t = \frac{-28 + 31.92}{-9.8}$ or $t = \frac{-28 - 31.92}{-9.8}$

$t = \frac{3.92}{-9.8}$ or $t = \frac{-59.92}{-9.8}$

$t = -0.4$ or $t = 6.11$

Time can not be negative. So:

$t = 6.11$

6 0

3 years ago

In the 30-60-90 triangle below, side s has a length of ___ and side q has a length of ___.

larisa [96]

Answer:

The answer is D.

Step-by-step explanation:

The side lengths for this special triangle is represented with x, x $\sqrt{3}$ , and 2x

if the side length that sees 90 degrees is 10 (2x and x = 5 in this case)

so s (the side length that sees 30 degrees) is = 5

and q (the side length that sees 60 degrees) = 5 $\sqrt{3}$

6 0

3 years ago

Solve 3|x - 61 = 12.

Alika [10]

Last option
-2 is ur answer

3 0

3 years ago

Read 2 more answers