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2 years ago

Josie says that (-15) XX(-15) = -156. Is she correct? How do you know?

Mathematics

1 answer:

notka56 [123]2 years ago

3 0

-21 i think is should be

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Which side lengths form a right triangle? Choose all answers that apply: Choose all answers that apply: (Choice A) A 3, 6, \sqrt

dlinn [17]

Answer:

A, B and C

Step-by-step explanation:

Given any three side lengths of a right triangle, the longest side is the hypotenuse.

The side lengths of a right triangle must satisfy the Pythagorean Theorem.

Pythagorean Theorem: $Hypotenuse^2=Opposite^2+Adjacent^2$

Option A: $3, 6, \sqrt{45}$

$(\sqrt{45})^2=3^2+6^2\\45=36+9\\45=45$

True

Option B: 2.5, 6, 6.5

$6.5^2=6^2+2.5^2\\42.25=36+6.25\\42.25=42.25 (TRUE)$

Option C: $4, 8, \sqrt{80}$

$4, 8, \sqrt{80}\\( \sqrt{80})^2=4^2+8^2\\80=16+64\\80=80 (TRUE)$

Since all are true, the side lengths in Options A, B and C forms a right triangle,

4 0

2 years ago

Explain whether this dilation is an enlargement or a reduction, and how you know. Triangle A B C is enlarged to triangle A prime

Vera_Pavlovna [14]

Answer:

the answer is:

The dilation is an enlargement because the image, triangle A'B'C', is larger than the pre-image, triangle ABC.

Step-by-step explanation:

I got it right on edge

5 0

2 years ago

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21 times 9 equals 9 times 21 what is the property

Reil [10]

Commutative property....

5 0

2 years ago

I need the answer of this with steps and solutions fast plz

Natali [406]

Answer:

$1 \dfrac{13}{15}$

Step-by-step explanation:

$2 \dfrac{1}{5} - \dfrac{1}{3} =$

$= \dfrac{11}{5} - \dfrac{1}{3}$

$= \dfrac{33}{15} - \dfrac{5}{15}$

$= \dfrac{28}{15}$

$= 1 \dfrac{13}{15}$

6 0

2 years ago

Natalia begins to find the mean absolute deviation of this data set. She finds the mean of the data and then finds the distance

s2008m [1.1K]

Hello!

To calculate mean absolute deviation, you find the mean, find the distance between each data point and the mean, add up those distances, and divide by the number of data points.

In this scenario, after Natalia finds the distances, she must add them all up and then divide by the number of data points.

I hope this helps!

3 0

2 years ago

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