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2 years ago

Help please lol :)))))))

Mathematics

1 answer:

nasty-shy [4]2 years ago

6 0

How come it’s a right triangle, I think you do a2+b2=C2. Therefore, you do 9.4 times 9.4 and then 15.1 times 15.1. So it will be 9.4 + b2=15.1. 88.36+ b2=228.01. Then you subtract that and it will be 139.65. Then you do square roots because you are trying to get rid of the second power. And the final answer is 11.81736011. How they told you to round it to the nearest tenth, I will be 11.8. I think this is the answer.

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Marla bought one necklace and two bracelets for $67.50. Use the following information to determine the amount she paid for each

alexdok [17]

Ooh, scary math

n+2b=67.5
n=27
27+2b=67.5
minus 27 both sides
2b=40.50
divide both sides by 2
b=20.25

a bracelet costs $20.25

8 0

2 years ago

Read 2 more answers

I need help finding the slope

MAVERICK [17]

Answer:

slope = 1/4

Step-by-step explanation:

To find the slope, I chose two points where the line intersected the graph at an exact point.

Points:

(0, -8)

(4, -7)

Slope is the measure of rise over run, so starting at (0, -8) I went up one and to the right 4 times.

To put this as a fraction, we would have: 1/4

The numerator and denominator are positive because we went up and to the right.

Therefore, the slope is 1/4.

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3 years ago

Rotate the given triangle 90°

kati45 [8]

9514 1404 393

Answer:

$\left[\begin{array}{ccc}0&-1&-2\\0&-3&5\end{array}\right]$

Step-by-step explanation:

The rotation matrix for 90° CCW is ...

$\left[\begin{array}{cc}0&-1\\1&0\end{array}\right]$

Then the rotated coordinates are ...

$\left[\begin{array}{ccc}0&-1\\1&0\end{array}\right]\cdot\left[\begin{array}{ccc}0&-3&5\\0&1&2\end{array}\right]=\left[\begin{array}{ccc}0&-1&-2\\0&-3&5\end{array}\right]$

_____

The transformation of each ordered pair is ...

(x, y) ⇒ (-y, x)

4 0

3 years ago

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Rosa is picking out fabric for her bedroom. She has 6 fabric samples, and 2 of them are floral. What is the probability that a r

Vlada [557]

Answer:

Probability of selected sample is floral = 1 / 3

Step-by-step explanation:

Given:

Number of fabric sample = 6 sample

Number of floral sample from all samples = 2 samples

Find:

Probability of selected sample is floral

Computation:

Probability of a sample = Favorable outcome / Total outcomes

Probability of selected sample is floral = Number of floral sample / Number of fabric sample

Probability of selected sample is floral = 2 / 6

Probability of selected sample is floral = 1 / 3

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2 years ago

Solve 2x − z = 4y + 2 for x

alina1380 [7]

Answer:

x = 2y + 1 + (z/2)

Step-by-step explanation:

Just manipulate the equation to isolate x.

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2 years ago