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lord [1]
4 years ago
14

Solve for x in the equation x 2 - 4 x - 9 = 29.

Mathematics
2 answers:
Aliun [14]4 years ago
8 0

Answer:

x=2-\sqrt{42} and x=2+\sqrt{42} \\

Step-by-step explanation:

Solve using the quadratic formula, which is x=\frac{-b + \sqrt{b^{2}-4ac }}{2a} and x=\frac{-b-\sqrt{b^{2}-4ac } }{2a}

Marizza181 [45]4 years ago
5 0

Answer:

x= -19

Step-by-step explanation:

2x-4x-9=29

-2x=29+9

x=38/-2

= -19

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A child is crawling at a pace of 176 inches every 3.37 min. Provided that this child is able to maintain this same pace, how man
Mice21 [21]

The child crawled 18 meters in 823 seconds.

Given:

A child is crawling at a pace of 176 inches every 3.37 minutes.

To find:

The distance covered (in meters) by a child in 823 seconds.

Solution:

Distance covered by a child in 3.37 minutes = 176 inches

Distance covered by a child in a 1 minute =   \frac{176 inches}{3.37}

1 minute = 60 seconds

Distance covered by a child in 60 seconds =  \frac{176 inches}{3.37}

Distance covered by a child in a 1 second:

=\frac{176 inches}{3.37}\times \frac{1}{60}

Distance covered by a child in 823 seconds:

=\frac{176 inches}{3.37}\times \frac{1}{60}\times 823=716.36 inches

In 1 meter there are 39.37 inches.

1 meter=39.37 inches\\1 inches=\frac{1}{39.37} meters\\716.36 inches=\frac{716.36 inches}{39.37} m=18.1956 m\approx 18 m

The child crawled 18 meters in 823 seconds.

Learn more about the unitary method here:

brainly.com/question/19359186

brainly.com/question/20065206?referrer=searchResults

6 0
3 years ago
Find the missing side. Round your answer to the nearest tenth.
Umnica [9.8K]

Answer:

x= 23.0 (nearest tenth)

Step-by-step explanation:

Please see the attached picture for the full solution.

8 0
3 years ago
Could I please have some workings out with the answer
rusak2 [61]
Assuming that the units of speed are also in minutes, for instance km/min or m/minute. Then you would not need to convert time into another unit. As for multiplying the bases of 10, remember that 10 = 10^1. So it would be 10^8+1 = 10^9. So the result would be 24 • 10^9 but in proper scientific notation it would be 2.4 • 10^10.

Yet, I believe you are working with the speed of light and thus you would need to convert 8 minutes into seconds which would be 8 • 60 = 480 seconds. Then do the following operation:

480 = 4.80 X 10^2

(4.80 X 10^2 seconds)(3.00 X 10^8 metres/second)

Simply multiply the whole numbers, and the bases of 10, and put in proper scientific notation.
4 0
3 years ago
Is y= 5+ x proportional
Verizon [17]

Answer:Yes because is it in the right formula!!

Step-by-step explanation:

3 0
4 years ago
A triangle has two 52° angles and one 76° angle. What kind of triangle is it?
r-ruslan [8.4K]

Answer:

Isosceles triangle

Step-by-step explanation:

There are three different kinds of triangle: equilateral, isosceles, and scalene.

-Equilateral triangles are triangles where all 3 sides and angles are the same. (First image)

-Isosceles triangles are triangles where 2 of the sides and angles are the same, while the third side and angle is different. (Second image)

-Scalene triangles are triangles where all 3 sides and angles are different. (Third image)

In the case of this triangle, two of the sides have the same 52 degree angle. They would also have the same side lengths, and <u>thus be a isosceles triangle. </u>

Hope this helps! :3

7 0
2 years ago
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